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CN112592116A - High-strength anti-crack epoxy mortar and preparation method thereof - Google Patents

High-strength anti-crack epoxy mortar and preparation method thereof Download PDF

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Publication number
CN112592116A
CN112592116A CN202011496922.8A CN202011496922A CN112592116A CN 112592116 A CN112592116 A CN 112592116A CN 202011496922 A CN202011496922 A CN 202011496922A CN 112592116 A CN112592116 A CN 112592116A
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China
Prior art keywords
crack
epoxy mortar
strength
stirring
epoxy
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Granted
Application number
CN202011496922.8A
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Chinese (zh)
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CN112592116B (en
Inventor
张书昊
黄体波
向吉雷
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China 19th Metallurgical Group Co ltd
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China 19th Metallurgical Group Co ltd
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075Uses not provided for elsewhere in C04B2111/00 for road construction
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Road Paving Structures (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention belongs to the technical field of building materials, and particularly relates to high-strength anti-crack epoxy mortar and a preparation method thereof. The invention aims to solve the technical problem of quality caused by cracking and uneven settlement of a municipal road subgrade and a road surface and provides high-strength and crack-resistant epoxy mortar and a preparation method thereof. The high-strength anti-crack epoxy mortar comprises the following raw materials in parts by weight: 280-320 kg/m of epoxy resin3The cement is 310-370 kg/m3The medium sand is 950-1150 kg/m3Part of fine sand 305-335 kg/m330-50 kg/m of plasticizer340-60 kg/m of accelerator3Water (310-350 kg/m)352-58 kg/m of polyethylene3Glass fiber of 48-54 kg/m3And (4) portions are obtained. The epoxy mortar has good bending strength and compressive strength and good crack resistance.

Description

High-strength anti-crack epoxy mortar and preparation method thereof
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to high-strength anti-crack epoxy mortar and a preparation method thereof.
Background
At present in municipal construction field, to the crack and the inhomogeneous settlement of road bed and road surface always be a quality problems that sends out more easily, also comparatively outstanding to the road influence, not only influence the service function of road, still cause the loss of personnel and vehicle property easily.
Some treatment measures are provided for the problems at present, but the road use is influenced because the construction process is long. Patent document CN102875057B discloses a high-strength fast-setting epoxy mortar and a preparation method thereof, wherein the high-strength fast-setting epoxy mortar comprises 100 parts of epoxy resin, 5-50 parts of toughening diluent, 10-60 parts of curing agent, 1-10 parts of accelerator, 1-10 parts of silane coupling agent and 100-1000 parts of quartz sand. The material is mainly used in the fields of rapid repair, leaking stoppage, reinforcement, protection and the like of buildings, but the material has no better wear resistance, so that the phenomenon that the road is easy to crack due to long-term vehicle running and after repeated impact of heavy vehicles is caused.
Patent document CN103359977 discloses an abrasion-resistant epoxy mortar and a preparation method thereof, wherein the abrasion-resistant epoxy mortar is composed of the following components in parts by weight: 80-100 parts of sand, 25-40 parts of powder and 18-26 parts of epoxy resin slurry; the epoxy resin slurry comprises the following components in parts by weight: 60-100 parts of epoxy resin, 10-20 parts of an activating agent, 60-120 parts of a carbonyl compound, 0-2 parts of a surfactant, 10-25 parts of a curing agent and 2-10 parts of an accelerating agent. The material is used as an anti-abrasion material in the field of hydraulic construction, and the phenomenon of cracking easily occurs because the repaired part can generate uneven pressure and vibration due to the dynamic load of vehicles on roads.
At present, a material capable of efficiently and quickly solving the problems of road cracks and uneven settlement and a preparation method are lacked in the field of municipal road construction, so that the research of high-strength anti-crack epoxy mortar is very necessary.
Disclosure of Invention
The invention aims to solve the technical problem of quality caused by cracking and uneven settlement of a municipal road subgrade and a road surface and provides high-strength and crack-resistant epoxy mortar and a preparation method thereof.
The invention provides high-strength anti-crack epoxy mortar for solving the technical problems. The epoxy mortar comprises the following raw materials in parts by weight: 280-320 kg/m of epoxy resin3The cement is 310-370 kg/m3The medium sand is 950-1150 kg/m3Part of fine sand 305-335 kg/m330-50 kg/m of plasticizer340-60 kg of accelerating agentm3Water (310-350 kg/m)352-58 kg/m of polyethylene3Glass fiber of 48-54 kg/m3And (4) portions are obtained.
Further, the plasticizer is dibutyl ester.
Further, the accelerator is diethylamine.
Further, the polyethylene is high density polyethylene.
The invention also provides a preparation method of the high-strength anti-crack epoxy mortar, which comprises the following steps:
a. mixing, heating and stirring epoxy resin and a plasticizer, adding cement, stirring uniformly, adding medium sand and fine sand, stirring, adding polyethylene and glass fiber, and stirring to obtain a mixture;
b. and d, cooling the mixture obtained in the step a, adding an accelerant, and stirring to obtain the epoxy mortar.
Further, in the step a, the temperature of the mixing is controlled to be 45-55 ℃.
Further, in the step b, after the mixture is cooled to 20-28 ℃, an accelerator is added.
The invention also provides application of the high-strength anti-crack epoxy mortar as an anti-crack material in the field of municipal road construction.
The invention has the beneficial effects that:
the epoxy mortar has good performance, and experiments show that the initial setting time of the epoxy mortar is less than or equal to 2h, the bending strength after 24h is more than or equal to 50MPa, the compressive strength is more than or equal to 80MPa, and the positive tensile bonding strength with concrete is more than or equal to 3.0 MPa. The epoxy mortar has high cohesiveness with concrete, stronger crack resistance and more excellent compression resistance and tensile resistance. Compared with the common mortar, the mortar not only can effectively reduce the adverse factors of low early strength, but also can be well combined with concrete, and can be matched with the common concrete for anti-cracking treatment. Compared with common mortar, the epoxy mortar prepared by the method has better ageing resistance and carbonization resistance, and has the advantages of obvious strength advantage and express forming.
Detailed Description
In particular, the invention provides a shoe soleThe strength anti-crack epoxy mortar. The epoxy mortar comprises the following raw materials in parts by weight: 280-320 kg/m of epoxy resin3The cement is 310-370 kg/m3The medium sand is 950-1150 kg/m3Part of fine sand 305-335 kg/m330-50 kg/m of dibutyl ester340-60 kg/m of diethylamine3Water (310-350 kg/m)352-58 kg/m of high density polyethylene3Glass fiber of 48-54 kg/m3And (4) portions are obtained.
In order to enable the epoxy mortar to have good strength and crack resistance, the inventor finds that the high-strength epoxy mortar prepared by mixing the raw materials according to a certain proportion has good strength, the bending strength after 24 hours is more than or equal to 50MPa, the compressive strength is more than or equal to 80MPa, and the positive tensile bonding strength with concrete is more than or equal to 3.0 MPa.
In the epoxy mortar, the epoxy resin has good bonding strength and chemical resistance; adding cement to increase strength and resist corrosion of fresh water or salt-containing water; the fine sand and the medium sand are added to play a role of a skeleton, so that the using amount of cement is saved; to increase the plasticity, dibutyl ester is added; the ethylene diamine is added to ensure that the prepared epoxy mortar has good thermal stability; in order to ensure that the prepared epoxy mortar has good wear resistance, electrical insulation, corrosion resistance, toughness, cold resistance and chemical stability, high-density polyethylene and glass fiber are added.
The invention also provides a preparation method of the high-strength anti-crack epoxy mortar, which comprises the following steps:
a. mixing, heating and stirring epoxy resin and a plasticizer, adding cement, stirring uniformly, adding medium sand and fine sand, stirring, adding polyethylene and glass fiber, and stirring to obtain a mixture;
b. and d, cooling the mixture obtained in the step a, adding an accelerant, and stirring to obtain the epoxy mortar.
Further, in the step a, the temperature of the mixing is controlled to be 45-55 ℃.
Further, in the step b, after the mixture is cooled to 20-28 ℃, an accelerator is added.
In the preparation process of the epoxy mortar, attention needs to be paid to whether the mortar is stirred and fused at any time, and the conditions of blocking, consolidation and the like are avoided. The prepared epoxy mortar needs to be used as soon as possible, and the prepared mortar needs to be used within 1 hour.
The invention also provides application of the high-strength anti-crack epoxy mortar as an anti-crack material in the field of municipal road construction.
The epoxy mortar can be used for reinforcing cracks and uneven settlement of roadbeds and pavements, and can also be used for large-area site construction; the mortar injection type.
The present invention will be further illustrated by the following specific examples.
Example 1
The epoxy mortar comprises the following raw materials in parts by weight: epoxy resin 280kg/m3425 parts of cement, 310kg/m3Medium sand 950kg/m3Fine sand 305kg/m3In parts by weight, dibutyl ester 30kg/m3Part(s) of ethylenediamine 40kg/m352kg/m of high density polyethylene3Part by weight, 48kg/m of glass fiber3Water of 310kg/m3And (4) portions are obtained.
The preparation method of the epoxy mortar of the embodiment comprises the following steps: a. mixing, heating and stirring epoxy resin and dibutyl ester, adding 425 cement, stirring uniformly, adding medium sand and fine sand, stirring, adding polyethylene and glass fiber, and stirring at 45 ℃ to obtain a mixture; b. and d, cooling the mixture obtained in the step a to 20 ℃, and then adding ethylenediamine and stirring to obtain the epoxy mortar.
The bending strength of the epoxy mortar prepared in the embodiment after 24 hours is 52MPa, the compressive strength is 81MPa, and the positive tensile bonding strength with concrete is 3.0 MPa.
Example 2
The epoxy mortar comprises the following raw materials in parts by weight: epoxy resin 300kg/m3425 parts of cement 330kg/m3Part by weight of medium sand 1050kg/m3Fine sand 320kg/m3Butyl ester 40kg/m3Part by weight of ethylenediamine 50kg/m3Parts by weight of high density polyethylene 55kg/m3Part by weight, 51kg/m of glass fiber3Portion of water 330kg/m3And (4) portions are obtained.
The preparation method of the epoxy mortar of the embodiment comprises the following steps: a. mixing, heating and stirring epoxy resin and dibutyl ester, adding 425 cement, stirring uniformly, adding medium sand and fine sand, stirring, adding polyethylene and glass fiber, and stirring at 50 ℃ to obtain a mixture; b. and d, cooling the mixture obtained in the step a to 24 ℃, and then adding ethylenediamine and stirring to obtain the epoxy mortar.
The bending strength of the epoxy mortar prepared in the embodiment after 24 hours is 56MPa, the compressive strength is 87MPa, and the positive tensile bonding strength with concrete is 3.5 MPa.
Example 3
The epoxy mortar comprises the following raw materials in parts by weight: epoxy resin 320kg/m3425 parts of cement 370kg/m31150kg/m of medium sand3Part by weight of fine sand 335kg/m350kg/m of dibutyl ester3Part by weight of ethylenediamine 60kg/m358kg/m of high-density polyethylene3Parts by weight, 54kg/m of glass fiber3Part by weight of water is 350kg/m3And (4) portions are obtained.
The preparation method of the epoxy mortar of the embodiment comprises the following steps: a. mixing, heating and stirring epoxy resin and dibutyl ester, adding 425 cement, stirring uniformly, adding medium sand and fine sand, stirring, adding polyethylene and glass fiber, and stirring at the temperature of 55 ℃ to obtain a mixture; b. and d, cooling the mixture obtained in the step a to 28 ℃, and then adding ethylenediamine and stirring to obtain the epoxy mortar.
The bending strength of the epoxy mortar prepared in the embodiment after 24 hours is 54MPa, the compressive strength is 85MPa, and the positive tensile bonding strength with concrete is 3.1 MPa.

Claims (8)

1. The high-strength anti-crack epoxy mortar is characterized in that: the composite material comprises the following raw materials in parts by weight: 280-320 kg/m of epoxy resin3The cement is 310-370 kg/m3The medium sand is 950-1150 kg/m3Part of fine sand 305-335 kg/m330-50 kg/m of plasticizer340-60 kg/m of accelerator3Water (310-350 kg/m)352-58 kg/m of polyethylene3Glass fiber of 48-54 kg/m3And (4) portions are obtained.
2. The high strength crack-resistant epoxy mortar according to claim 1, wherein: the plasticizer is dibutyl ester.
3. The high strength anti-crack epoxy mortar according to claim 1 or 2, characterized in that: the accelerant is diethylamine.
4. The high-strength anti-crack epoxy mortar according to any one of claims 1 to 3, wherein: the polyethylene is high density polyethylene.
5. The method for preparing the high-strength anti-crack epoxy mortar according to any one of claims 1 to 4, wherein the method comprises the following steps: the method comprises the following steps:
a. mixing, heating and stirring epoxy resin and a plasticizer, adding cement, stirring uniformly, adding medium sand and fine sand, stirring, adding polyethylene and glass fiber, and stirring to obtain a mixture;
b. and d, cooling the mixture obtained in the step a, adding an accelerant, and stirring to obtain the epoxy mortar.
6. The preparation method of the high-strength anti-crack epoxy mortar according to claim 5, wherein: in the step a, the mixing temperature is controlled to be 45-55 ℃.
7. The method for preparing the high-strength anti-crack epoxy mortar according to claim 5 or 6, wherein: in the step b, the mixture is cooled to 20-28 ℃, and then an accelerant is added.
8. The high-strength anti-crack epoxy mortar of any one of claims 1 to 4 is applied to the field of municipal road construction as an anti-crack material.
CN202011496922.8A 2020-12-17 2020-12-17 High-strength anti-crack epoxy mortar and preparation method thereof Active CN112592116B (en)

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379870A (en) * 1978-07-07 1983-04-12 Mitsui Petrochemical Industries, Ltd. Reinforcing material for hydraulic substances and method for the production thereof
CN102875057A (en) * 2012-08-29 2013-01-16 江苏博特新材料有限公司 High-strength quick-curing epoxy mortar and preparation method thereof
CN103359977A (en) * 2013-06-25 2013-10-23 中科院广州化学有限公司 Abrasion-resistant epoxy mortar and preparation method thereof
CN105366994A (en) * 2015-11-05 2016-03-02 江苏苏博特新材料股份有限公司 Impact-resistant and abrasion-resistant epoxy resin mortar and preparation method thereof
CN106517959A (en) * 2016-11-22 2017-03-22 江苏苏博特新材料股份有限公司 Epoxy mortar adopting surface modified fibers for toughness enhancement
CN106747019A (en) * 2017-01-21 2017-05-31 浙江益森科技股份有限公司 A kind of sponge city permeable epoxide resin polymer mortar and its porous pavement of preparation
CN106883556A (en) * 2017-03-21 2017-06-23 常州翔诺新材料科技有限公司 A kind of recycled plastic regenerated fiber cooperates with reinforced epoxy composite and preparation method thereof with glass fibre
CN108164196A (en) * 2018-02-09 2018-06-15 十九冶成都建设有限公司 Epoxy mortar, preparation method thereof and application thereof in pipe jacking construction
CN109970407A (en) * 2017-12-15 2019-07-05 苏州混凝土水泥制品研究院有限公司 A kind of structural strengthening aqueous epoxy resins modified cement mortar and preparation method thereof
US20200087552A1 (en) * 2016-12-14 2020-03-19 Sika Technology Ag Epoxy resin adhesive with high compressive strength
CN111393069A (en) * 2020-03-25 2020-07-10 深圳绿景环保再生资源有限公司 Preparation method of epoxy mortar of modified powder and graded sand and epoxy mortar

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379870A (en) * 1978-07-07 1983-04-12 Mitsui Petrochemical Industries, Ltd. Reinforcing material for hydraulic substances and method for the production thereof
CN102875057A (en) * 2012-08-29 2013-01-16 江苏博特新材料有限公司 High-strength quick-curing epoxy mortar and preparation method thereof
CN103359977A (en) * 2013-06-25 2013-10-23 中科院广州化学有限公司 Abrasion-resistant epoxy mortar and preparation method thereof
CN105366994A (en) * 2015-11-05 2016-03-02 江苏苏博特新材料股份有限公司 Impact-resistant and abrasion-resistant epoxy resin mortar and preparation method thereof
CN106517959A (en) * 2016-11-22 2017-03-22 江苏苏博特新材料股份有限公司 Epoxy mortar adopting surface modified fibers for toughness enhancement
US20200087552A1 (en) * 2016-12-14 2020-03-19 Sika Technology Ag Epoxy resin adhesive with high compressive strength
CN106747019A (en) * 2017-01-21 2017-05-31 浙江益森科技股份有限公司 A kind of sponge city permeable epoxide resin polymer mortar and its porous pavement of preparation
CN106883556A (en) * 2017-03-21 2017-06-23 常州翔诺新材料科技有限公司 A kind of recycled plastic regenerated fiber cooperates with reinforced epoxy composite and preparation method thereof with glass fibre
CN109970407A (en) * 2017-12-15 2019-07-05 苏州混凝土水泥制品研究院有限公司 A kind of structural strengthening aqueous epoxy resins modified cement mortar and preparation method thereof
CN108164196A (en) * 2018-02-09 2018-06-15 十九冶成都建设有限公司 Epoxy mortar, preparation method thereof and application thereof in pipe jacking construction
CN111393069A (en) * 2020-03-25 2020-07-10 深圳绿景环保再生资源有限公司 Preparation method of epoxy mortar of modified powder and graded sand and epoxy mortar

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