CN114791418B - Quick inspection and disposal method for construction quality defects of adhesive for structural reinforcement - Google Patents
Quick inspection and disposal method for construction quality defects of adhesive for structural reinforcement Download PDFInfo
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- CN114791418B CN114791418B CN202210594543.5A CN202210594543A CN114791418B CN 114791418 B CN114791418 B CN 114791418B CN 202210594543 A CN202210594543 A CN 202210594543A CN 114791418 B CN114791418 B CN 114791418B
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- 239000000853 adhesive Substances 0.000 title claims abstract description 149
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 149
- 238000000034 method Methods 0.000 title claims abstract description 83
- 238000010276 construction Methods 0.000 title claims abstract description 68
- 230000002787 reinforcement Effects 0.000 title claims abstract description 24
- 230000007547 defect Effects 0.000 title claims abstract description 19
- 238000007689 inspection Methods 0.000 title claims description 17
- 239000003292 glue Substances 0.000 claims abstract description 24
- 239000003086 colorant Substances 0.000 claims abstract description 14
- 238000012360 testing method Methods 0.000 claims description 129
- 238000005452 bending Methods 0.000 claims description 72
- 239000000463 material Substances 0.000 claims description 64
- 230000009477 glass transition Effects 0.000 claims description 30
- 238000002329 infrared spectrum Methods 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 15
- 230000004075 alteration Effects 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000010125 resin casting Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 125000000524 functional group Chemical group 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- 238000012921 fluorescence analysis Methods 0.000 claims description 6
- 238000011056 performance test Methods 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000004566 IR spectroscopy Methods 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000012779 reinforcing material Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/29—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3563—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/223—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/12—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of critical point; of other phase change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3563—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
- G01N2021/3572—Preparation of samples, e.g. salt matrices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention relates to a method for rapidly inspecting and disposing construction quality defects of an adhesive for structural reinforcement, and belongs to the technical field of detection of adhesive performance of building structures. The method comprises the following steps of rapidly inspecting and disposing three phenomena of non-curing glue, insufficient curing glue and difference of colors of cured glue. The invention can rapidly detect and evaluate typical defects in the curing process of the adhesive in the construction process of the reinforcement engineering, and can correspondingly treat the defects according to the results, thereby providing a rapid solution for related problems in the construction site.
Description
Technical Field
The invention relates to a method for rapidly inspecting and disposing construction quality defects of an adhesive for structural reinforcement, and belongs to the technical field of detection of adhesive performance of building structures.
Background
In the structural reinforcement engineering, the adhesive for reinforcement is an important bonding material, and the existing acceptance inspection method is based on the fact that after the adhesive is fully cured, the bonding strength and the plumpness of construction parts are inspected according to construction quality acceptance inspection Specification of construction quality of building structural reinforcement engineering GB 5050-2010. However, the reinforced adhesive after construction in actual engineering is not cured or is not cured sufficiently often, and the applicability and safety of the reinforced adhesive cannot be evaluated rapidly by the existing specifications. The method is a rapid inspection and disposal method aiming at the defect of construction quality of an adhesive for reinforcing structural engineering, and the adhesive for reinforcing covers the adhesive types specified in the existing general Specification for building identification and reinforcement GB 55021-2021 and the technical Specification for safety identification of reinforced materials of engineering structures GB50728-2011, and mainly comprises the following steps: an adhesive for bonding steel, an adhesive for reinforcing steel pouring, an adhesive for bonding fiber composite materials, an adhesive for anchoring a planted bar, an adhesive for repairing cracks, etc. In the construction process of the reinforcement engineering, the adhesive for reinforcement needs to enter a factory once according to the requirements of construction quality acceptance Specification of building structure reinforcement engineering GB 50550-2010, and can be constructed after rechecking. However, engineering accidents still occur in the construction process, and typical construction quality defects of the adhesive for reinforcement are mainly classified into non-curing of the adhesive, insufficient curing of the adhesive, difference of colors after curing and the like. In addition, in the construction quality acceptance Specification of building structure reinforcement engineering GB 5050-2010, the quality of the reinforced adhesive after construction is checked, which mainly checks the filling fullness and the bonding strength, and for typical defects caused by insufficient curing of the adhesive, an effective method is lacking in the prior art.
Disclosure of Invention
The invention provides a method for rapidly inspecting and disposing construction quality defects of an adhesive for structural reinforcement, aiming at the problems of insufficient curing of the adhesive, difference of colors after curing and the like in the prior art.
In order to solve the problems, the invention adopts the following technical scheme:
The quick inspection and disposal method for the construction quality defect of the adhesive for structural reinforcement comprises the following steps of quick inspection and disposal of three phenomena of non-curing glue, insufficient curing glue and difference of colors after curing glue, wherein the three phenomena are respectively inspected and disposed according to the following steps:
(1) For the phenomenon of non-curing of glue
Aiming at the phenomenon that the structural adhesive is not cured in engineering, the adhesive is mainly in a flowing state after construction, and can be tested and treated as follows:
Step 1.1: inspection of
Taking flowing glue solution and an adhesive product which is not constructed to form two samples, and respectively analyzing the compositions of the two samples by adopting an observation method, an infrared spectrometry method and an X fluorescence analysis method;
the observation method mainly judges whether the appearance colors of the two samples are consistent;
If the colors are consistent, the positions of characteristic peaks of molecular functional groups in an infrared spectrogram obtained by combining an infrared spectrum method are needed to further judge whether the chemical compositions of the two samples are consistent;
If the colors are inconsistent, two sample elements are analyzed by combining an X fluorescence analysis method; simultaneously analyzing the consistency of the two sample materials by combining an infrared spectrogram; if the material compositions are consistent, the reinforced adhesive material for site construction has no problem, and the reinforced adhesive material can be judged that the reinforced adhesive material is not mixed according to the proportion of the product specification during construction or that metal elements are mixed into the adhesive solution at the bonding part of the reinforced adhesive material and the adhesive; if the material compositions are inconsistent, the adhesive products in construction are inconsistent with the products in the factory;
Step 2.2: treatment of
Removing materials and parts of obvious flowing parts, wherein a drilling method is adopted for hidden engineering to identify whether glue flowing exists or not, and then each component of the adhesive product for reinforcement is mixed completely according to the proportion required by the specification, and then construction is carried out;
(2) For the phenomenon of inadequate curing of the glue
Aiming at the phenomenon that the structural adhesive is not sufficiently cured in engineering, the method is mainly characterized in that the adhesive material after construction is solidified, but the overall hardness is not high, and the following treatment can be carried out:
step 2.1: inspection of
Taking out the solidified adhesive material in a block shape from a construction site in a micro-damage mode, and taking out an adhesive product which is not constructed;
After blending the components of the adhesive product which is not constructed according to the proportion of the product specification, preparing a bending test piece according to the method for testing the performance of a resin casting body GB/T2567-2008, rapidly curing the test piece, and testing the bending strength P1 of the test piece; simultaneously, an infrared spectrum of the test piece is obtained by adopting an infrared spectrum method, and the glass transition temperature T1 of the test piece is measured by adopting a differential scanning method;
Preparing 2 groups of bending test pieces with the size meeting the requirements of GB/T2567-2008 of the performance test method of a resin casting body by using the adhesive material obtained from a construction site, and directly testing the bending strength of the 1 st group of test pieces to obtain bending strength P2; heating the group 2 test pieces, airing the test pieces to normal temperature, and testing the bending strength of the test pieces to obtain bending strength P3; testing by adopting an infrared spectrum method to obtain an infrared spectrum of 2 groups of test pieces; testing the glass transition temperature Tg of the 2 groups of samples by adopting a differential scanning method, thereby obtaining the glass transition temperature T2 of the 1 st group of unheated test pieces and the glass transition temperature T3 of the 2 nd group of test pieces after heating treatment;
Step 2.2: treatment of
① Comparing 3 groups of test piece infrared spectrograms, if the characteristic peaks of typical functional groups are large in difference, indicating that the test pieces lack consistency and have the effects of stealth and material reduction, and dismantling the test pieces; on the contrary, the consistency of the composition of the test pieces is shown;
② On the premise that the infrared spectrograms of the 3 groups of test pieces are consistent, comparing the bending strength of the 3 groups of test pieces, and determining whether to remove or reserve the part with insufficient curing;
(3) For the phenomenon of difference of color after the glue is solidified
Aiming at the problems that the structural adhesive is cured, but has obvious chromatic aberration and is worried about insufficient strength in engineering, the following treatment can be carried out:
Step 3.1: inspection of
Taking out the cured adhesive materials with obvious difference in color from a construction site in a micro-damage mode, and taking out an adhesive product which is not constructed;
Preparing a bending test piece from an adhesive material with obvious chromatic aberration obtained at a construction site according to a resin casting body performance test method GB/T2567-2008, testing the bending strength of the bending test piece, and testing an infrared spectrogram of the test piece; after blending the components of the adhesive product which is not constructed according to the proportion of the product specification, preparing a bending test piece according to the method for testing the performance of a resin casting body GB/T2567-2008, rapidly curing the test piece, and testing the bending strength P1 of the test piece; simultaneously, an infrared spectrum method is adopted for testing to obtain an infrared spectrum of the test piece;
step 3.2: treatment of
① Comparing the infrared spectrograms of the cured adhesive material with obvious chromatic aberration and the test piece of the non-construction adhesive product, if the characteristic peak difference of the typical functional group is large, the cured adhesive material and the test piece of the non-construction adhesive product are lack of consistency, and the materials are stolen and reduced, and the cured adhesive material should be removed;
② On the premise that the infrared spectrograms are consistent, the chromatic aberration can be judged to be caused by construction reasons; if the bending strength of the field cured adhesive material test piece is smaller than the technical index requirement specified by the product standard, dismantling; if the bending strength meets the product standard index requirement, the method is reserved.
Further, in ② of the step 2.2, a specific method for determining whether to remove or retain the insufficiently cured portion is as follows;
If the bending strength P2 and the bending strength P3 are smaller than the bending strength P1 and smaller than the technical index requirements specified by the product standard, removing the part with insufficient curing;
If the bending strength P2 is smaller than the bending strength P1, but the bending strength P3 is close to the bending strength P1 and meets the technical index requirements specified by the product standard, the glass transition temperature T3 and the glass transition temperature T1 need to be further compared; if the glass transition temperature T3 is less than the glass transition temperature T1, the adhesive material with insufficient curing is insufficient in heat resistance, and the part with insufficient curing is removed; if the glass transition temperature T3 is comparable to the glass transition temperature T1, then the insufficiently cured portion may remain.
Further, in the step 2.1, the bending test piece obtained by mixing the components of the adhesive product which is not constructed according to the proportion of the product specification and the bending test piece prepared by mixing the components of the adhesive product which is not constructed in the step 3.1 according to the proportion of the product specification are heated at 60 ℃ for 24 hours to quickly solidify the test piece; and for the group 2 bending test pieces prepared by the adhesive material obtained in the construction site in the step 2.1, the test pieces are rapidly cured by adopting a heating treatment mode at 60 ℃ for 4 hours.
Further, the adhesive for reinforcing the structure comprises adhesive types specified in the existing building identification and reinforcement general Specification GB 55021-2021 and the engineering structure reinforcing material safety identification technical Specification GB 50728-2011.
Further, the adhesive for reinforcing the structure comprises an adhesive for bonding steel, an adhesive for reinforcing steel pouring, an adhesive for bonding fiber composite materials, an adhesive for anchoring embedded bars or an adhesive for repairing cracks.
Compared with the prior art, the invention has the following technical effects:
The invention can rapidly detect and evaluate typical defects in the curing process of the adhesive in the construction process of the reinforcement engineering, and can correspondingly treat the defects according to the results, thereby providing a rapid solution for related problems in the construction site.
Detailed Description
The technical scheme of the invention is further described by the following specific embodiments.
In this example, the adhesive for repairing cracks specified in "existing general Specification for building authentication and reinforcement" GB 55021-2021 and "technical Specification for engineering structural reinforcement safety authentication" GB 50728-2011 is used for illustration.
The method for rapidly inspecting and disposing the construction quality defect of the adhesive for reinforcing the structure-crack repairing adhesive of the embodiment comprises the following steps of rapidly inspecting and disposing three phenomena of non-curing of the adhesive, insufficient curing of the adhesive and difference of colors of the cured adhesive, wherein the three phenomena are respectively inspected and disposed according to the following steps:
(1) For the phenomenon of non-curing of glue
Aiming at the phenomenon that the structural adhesive is not cured in engineering, the adhesive is mainly in a flowing state after construction, and can be tested and treated as follows:
Step 1.1: inspection of
Taking flowing glue solution and an adhesive product which is not constructed to form two samples, and respectively analyzing the compositions of the two samples by adopting an observation method, an infrared spectrometry method and an X fluorescence analysis method;
the observation method mainly judges whether the appearance colors of the two samples are consistent;
If the colors are consistent, the positions of characteristic peaks of molecular functional groups in an infrared spectrogram obtained by combining an infrared spectrum method are needed to further judge whether the chemical compositions of the two samples are consistent;
If the colors are inconsistent, two sample elements are analyzed by combining an X fluorescence analysis method; simultaneously analyzing the consistency of the two sample materials by combining an infrared spectrogram; if the material compositions are consistent, the reinforced adhesive material for site construction has no problem, and the reinforced adhesive material can be judged that the reinforced adhesive material is not mixed according to the proportion of the product specification during construction or that metal elements are mixed into the adhesive solution at the bonding part of the reinforced adhesive material and the adhesive; if the material compositions are inconsistent, the adhesive products in construction are inconsistent with the products in the factory;
Step 2.2: treatment of
Removing materials and parts of obvious flowing parts, wherein a drilling method is adopted for hidden engineering to identify whether glue flowing exists or not, and then each component of the adhesive product for reinforcement is mixed completely according to the proportion required by the specification, and then construction is carried out;
(2) For the phenomenon of inadequate curing of the glue
Aiming at the phenomenon that the structural adhesive is not sufficiently cured in engineering, the method is mainly characterized in that the adhesive material after construction is solidified, but the overall hardness is not high, and the following treatment can be carried out:
step 2.1: inspection of
Taking out the solidified adhesive material in a block shape from a construction site in a micro-damage mode, and taking out an adhesive product which is not constructed;
After blending the components of the adhesive product which is not constructed according to the proportion of the product specification, preparing a bending test piece according to the method for testing the performance of a resin casting body GB/T2567-2008, rapidly curing the test piece by adopting a heating treatment mode at 60 ℃ for 24 hours, and testing the bending strength P1 of the test piece; simultaneously, an infrared spectrum of the test piece is obtained by adopting an infrared spectrum method, and the glass transition temperature T1 of the test piece is measured by adopting a differential scanning method;
preparing 2 groups of bending test pieces with the size meeting the requirements of GB/T2567-2008 of the performance test method of a resin casting body by using the adhesive material obtained from a construction site, and directly testing the bending strength of the 1 st group of test pieces to obtain bending strength P2; heating the group 2 test pieces at 60 ℃ for 4 hours, airing to normal temperature, and testing the bending strength of the group 2 test pieces to obtain bending strength P3; testing by adopting an infrared spectrum method to obtain an infrared spectrum of 2 groups of test pieces; testing the glass transition temperature Tg of the 2 groups of samples by adopting a differential scanning method, thereby obtaining the glass transition temperature T2 of the 1 st group of unheated test pieces and the glass transition temperature T3 of the 2 nd group of test pieces after heating treatment;
Step 2.2: treatment of
① Comparing 3 groups of test piece infrared spectrograms, if the characteristic peaks of typical functional groups are large in difference, indicating that the test pieces lack consistency and have the effects of stealth and material reduction, and dismantling the test pieces; on the contrary, the consistency of the composition of the test pieces is shown;
② On the premise that the infrared spectrograms of the 3 groups of test pieces are consistent, comparing the bending strength of the 3 groups of test pieces, and determining whether to remove or reserve the part with insufficient curing;
If the bending strength P2 and the bending strength P3 are smaller than the bending strength P1 and smaller than the technical index requirements specified by the product standard, removing the part with insufficient curing;
If the bending strength P2 is smaller than the bending strength P1, but the bending strength P3 is close to the bending strength P1 and meets the technical index requirements specified by the product standard, the glass transition temperature T3 and the glass transition temperature T1 need to be further compared; if the glass transition temperature T3 is less than the glass transition temperature T1, the adhesive material with insufficient curing is insufficient in heat resistance, and the part with insufficient curing is removed; if the glass transition temperature T3 is comparable to the glass transition temperature T1, then the insufficiently cured portion may remain.
(3) For the phenomenon of difference of color after the glue is solidified
Aiming at the problems that the structural adhesive is cured, but has obvious chromatic aberration and is worried about insufficient strength in engineering, the following treatment can be carried out:
Step 3.1: inspection of
Taking out the cured adhesive materials with obvious difference in color from a construction site in a micro-damage mode, and taking out an adhesive product which is not constructed;
Preparing a bending test piece from an adhesive material with obvious chromatic aberration obtained at a construction site according to a resin casting body performance test method GB/T2567-2008, testing the bending strength of the bending test piece, and testing an infrared spectrogram of the test piece; after blending the components of the adhesive product which is not constructed according to the proportion of the product specification, preparing a bending test piece according to the method for testing the performance of a resin casting body GB/T2567-2008, rapidly curing the test piece by adopting a heating treatment mode at 60 ℃ for 24 hours, and testing the bending strength P1 of the test piece; simultaneously, an infrared spectrum method is adopted for testing to obtain an infrared spectrum of the test piece;
step 3.2: treatment of
① Comparing the infrared spectrograms of the cured adhesive material with obvious chromatic aberration and the test piece of the non-construction adhesive product, if the characteristic peak difference of the typical functional group is large, the cured adhesive material and the test piece of the non-construction adhesive product are lack of consistency, and the materials are stolen and reduced, and the cured adhesive material should be removed;
② On the premise that the infrared spectrograms are consistent, the chromatic aberration can be judged to be caused by construction reasons; if the bending strength of the field cured adhesive material test piece is smaller than the technical index requirement specified by the product standard, dismantling; if the bending strength meets the product standard index requirement, the method is reserved.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (5)
1. The quick inspection and disposal method for the construction quality defects of the adhesive for structural reinforcement comprises the following three phenomena of non-curing glue, insufficient curing glue and difference in color after curing glue, and is characterized by comprising the following steps of:
(1) For the phenomenon of non-curing of glue
Aiming at the phenomenon that the structural adhesive is not cured in engineering, the adhesive is mainly in a flowing state after construction, and can be tested and treated as follows:
Step 1.1: inspection of
Taking flowing glue solution and an adhesive product which is not constructed to form two samples, and respectively analyzing the compositions of the two samples by adopting an observation method, an infrared spectrometry method and an X fluorescence analysis method;
the observation method mainly judges whether the appearance colors of the two samples are consistent;
If the colors are consistent, the positions of characteristic peaks of molecular functional groups in an infrared spectrogram obtained by combining an infrared spectrum method are needed to further judge whether the chemical compositions of the two samples are consistent;
If the colors are inconsistent, two sample elements are analyzed by combining an X fluorescence analysis method; simultaneously analyzing the consistency of the two sample materials by combining an infrared spectrogram; if the material compositions are consistent, the reinforced adhesive material for site construction has no problem, and the reinforced adhesive material can be judged that the reinforced adhesive material is not mixed according to the proportion of the product specification during construction or that metal elements are mixed into the adhesive solution at the bonding part of the reinforced adhesive material and the adhesive; if the material compositions are inconsistent, the adhesive products in construction are inconsistent with the products in the factory;
Step 2.2: treatment of
Removing materials and parts of obvious flowing parts, wherein a drilling method is adopted for hidden engineering to identify whether glue flowing exists or not, and then each component of the adhesive product for reinforcement is mixed completely according to the proportion required by the specification, and then construction is carried out;
(2) For the phenomenon of inadequate curing of the glue
Aiming at the phenomenon that the structural adhesive is not sufficiently cured in engineering, the method is mainly characterized in that the adhesive material after construction is solidified, but the overall hardness is not high, and the following treatment can be carried out:
step 2.1: inspection of
Taking out the solidified adhesive material in a block shape from a construction site in a micro-damage mode, and taking out an adhesive product which is not constructed;
After blending the components of the adhesive product which is not constructed according to the proportion of the product specification, preparing a bending test piece according to the method for testing the performance of a resin casting body GB/T2567-2008, rapidly curing the test piece, and testing the bending strength P1 of the test piece; simultaneously, an infrared spectrum of the test piece is obtained by adopting an infrared spectrum method, and the glass transition temperature T1 of the test piece is measured by adopting a differential scanning method;
Preparing 2 groups of bending test pieces with the size meeting the requirements of GB/T2567-2008 of the performance test method of a resin casting body by using the adhesive material obtained from a construction site, and directly testing the bending strength of the 1 st group of test pieces to obtain bending strength P2; heating the group 2 test pieces, airing the test pieces to normal temperature, and testing the bending strength of the test pieces to obtain bending strength P3; testing by adopting an infrared spectrum method to obtain an infrared spectrum of 2 groups of test pieces; testing the glass transition temperature Tg of the 2 groups of samples by adopting a differential scanning method, thereby obtaining the glass transition temperature T2 of the 1 st group of unheated test pieces and the glass transition temperature T3 of the 2 nd group of test pieces after heating treatment;
Step 2.2: treatment of
① Comparing 3 groups of test piece infrared spectrograms, if the characteristic peaks of typical functional groups are large in difference, indicating that the test pieces lack consistency and have the effects of stealth and material reduction, and dismantling the test pieces; on the contrary, the consistency of the composition of the test pieces is shown;
② On the premise that the infrared spectrograms of the 3 groups of test pieces are consistent, comparing the bending strength of the 3 groups of test pieces, and determining whether to remove or reserve the part with insufficient curing;
(3) For the phenomenon of difference of color after the glue is solidified
Aiming at the problems that the structural adhesive is cured, but has obvious chromatic aberration and is worried about insufficient strength in engineering, the following treatment can be carried out:
Step 3.1: inspection of
Taking out the cured adhesive materials with obvious difference in color from a construction site in a micro-damage mode, and taking out an adhesive product which is not constructed;
Preparing a bending test piece from an adhesive material with obvious chromatic aberration obtained at a construction site according to a resin casting body performance test method GB/T2567-2008, testing the bending strength of the bending test piece, and testing an infrared spectrogram of the test piece; after blending the components of the adhesive product which is not constructed according to the proportion of the product specification, preparing a bending test piece according to the method for testing the performance of a resin casting body GB/T2567-2008, rapidly curing the test piece, and testing the bending strength P1 of the test piece; simultaneously, an infrared spectrum method is adopted for testing to obtain an infrared spectrum of the test piece;
step 3.2: treatment of
① Comparing the infrared spectrograms of the cured adhesive material with obvious chromatic aberration and the test piece of the non-construction adhesive product, if the characteristic peak difference of the typical functional group is large, the cured adhesive material and the test piece of the non-construction adhesive product are lack of consistency, and the materials are stolen and reduced, and the cured adhesive material should be removed;
② On the premise that the infrared spectrograms are consistent, the chromatic aberration can be judged to be caused by construction reasons; if the bending strength of the field cured adhesive material test piece is smaller than the technical index requirement specified by the product standard, dismantling; if the bending strength meets the product standard index requirement, the method is reserved.
2. The method for rapidly inspecting and disposing the construction quality defects of the adhesive for reinforcing the structure according to claim 1, wherein the method comprises the following steps: in ② of the step 2.2, a specific method for determining whether to remove or retain the insufficiently cured part is as follows;
If the bending strength P2 and the bending strength P3 are smaller than the bending strength P1 and smaller than the technical index requirements specified by the product standard, removing the part with insufficient curing;
If the bending strength P2 is smaller than the bending strength P1, but the bending strength P3 is close to the bending strength P1 and meets the technical index requirements specified by the product standard, the glass transition temperature T3 and the glass transition temperature T1 need to be further compared; if the glass transition temperature T3 is less than the glass transition temperature T1, the adhesive material with insufficient curing is insufficient in heat resistance, and the part with insufficient curing is removed; if the glass transition temperature T3 is comparable to the glass transition temperature T1, then the insufficiently cured portion may remain.
3. The method for rapidly inspecting and disposing the construction quality defects of the adhesive for reinforcing the structure according to claim 2, wherein the method comprises the following steps:
In the step 2.1, the bending test piece obtained after the components of the adhesive product which is not constructed are mixed according to the proportion of the product specification and the bending test piece prepared after the components of the adhesive product which is not constructed in the step 3.1 are mixed according to the proportion of the product specification are heated at 60 ℃ for 24 hours to quickly solidify the test piece;
And for the group 2 bending test pieces prepared by the adhesive material obtained in the construction site in the step 2.1, the test pieces are rapidly cured by adopting a heating treatment mode at 60 ℃ for 4 hours.
4. The method for rapidly inspecting and disposing the construction quality defects of the adhesive for reinforcing the structure according to claim 1, wherein the method comprises the following steps: the adhesive for reinforcing the structure comprises adhesive types specified in the existing building identification and reinforcing general Specification GB 55021-2021 and the engineering structure reinforcing material safety identification technical Specification GB 50728-2011.
5. The method for rapidly inspecting and disposing the construction quality defects of the adhesive for reinforcing the structure according to claim 4, wherein the method comprises the following steps: the adhesive for reinforcing the structure comprises an adhesive for reinforcing steel, an adhesive for reinforcing steel pouring, an adhesive for adhering fiber composite materials, an adhesive for anchoring embedded bars or an adhesive for repairing cracks.
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| CN101435772A (en) * | 2008-12-12 | 2009-05-20 | 三星高新电机（天津）有限公司 | Epoxide-resin glue curing degree and hardness detecting and analyzing method |
| CN108398398A (en) * | 2018-02-12 | 2018-08-14 | 山西省交通科学研究院 | The method for identifying asphalt quality using decaying In situ ATR-FTIR standard spectrogram |
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| CN101435772A (en) * | 2008-12-12 | 2009-05-20 | 三星高新电机（天津）有限公司 | Epoxide-resin glue curing degree and hardness detecting and analyzing method |
| CN108398398A (en) * | 2018-02-12 | 2018-08-14 | 山西省交通科学研究院 | The method for identifying asphalt quality using decaying In situ ATR-FTIR standard spectrogram |
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