CN115745535A - High-toughness super-early-strength rapid road repairing material with large-volume steel slag solid waste - Google Patents
High-toughness super-early-strength rapid road repairing material with large-volume steel slag solid waste Download PDFInfo
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- CN115745535A CN115745535A CN202211557326.5A CN202211557326A CN115745535A CN 115745535 A CN115745535 A CN 115745535A CN 202211557326 A CN202211557326 A CN 202211557326A CN 115745535 A CN115745535 A CN 115745535A
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- 239000000463 material Substances 0.000 title claims abstract description 92
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 47
- 239000002893 slag Substances 0.000 title claims abstract description 47
- 239000010959 steel Substances 0.000 title claims abstract description 47
- 239000002910 solid waste Substances 0.000 title claims abstract description 27
- 230000008439 repair process Effects 0.000 claims abstract description 48
- 239000004568 cement Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000004576 sand Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 239000000701 coagulant Substances 0.000 claims abstract description 7
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 239000002002 slurry Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 239000012745 toughening agent Substances 0.000 claims abstract description 5
- 239000002562 thickening agent Substances 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 28
- 239000006004 Quartz sand Substances 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 3
- 239000012856 weighed raw material Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 12
- 239000004567 concrete Substances 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 1
- 229960002261 magnesium phosphate Drugs 0.000 description 1
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 1
- 239000004137 magnesium phosphate Substances 0.000 description 1
- 235000010994 magnesium phosphates Nutrition 0.000 description 1
- 239000011433 polymer cement mortar Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a high-toughness super early-strength rapid repair material for a road with high steel slag solid waste content, which comprises the following raw materials in parts by weight: 300-400 parts of cement, 400-500 parts of sand, 50-150 parts of auxiliary cementing material, 0-40 parts of toughening agent, 1-3 parts of water reducing agent, 0.1-0.75 part of coagulant, 1-5 parts of retarder, 10-30 parts of expanding agent, 0-0.5 part of water-retaining thickening agent, 80-140 parts of water and 0.20-0.26 of water-cement ratio, weighing the raw materials, uniformly mixing to prepare a dry material, adding water, and stirring until the slurry state is uniform to obtain the rapid repair material.
Description
Technical Field
The invention relates to the field of road repairing materials, in particular to a high-toughness super early-strength road rapid repairing material with large steel slag mixing amount for solid wastes.
Background
In recent years, along with economic development and land utilization development, urban traffic volume and traffic intensity are gradually increased, so that partial roads are damaged in different degrees, the carbon emission of a 'boring and belly breaking' major repair method is large, the traffic control time is long, and great influences are caused on building materials, traffic industry energy conservation and emission reduction, safe and normal running of urban roads, smooth travel of the masses and urban appearances. Therefore, the method for repairing the road by adopting the trenchless repairing mode is preferably considered, so that the construction time is reduced, the influence on road traffic is reduced, higher requirements are put forward on materials for repairing, the method not only needs to open the traffic in a shorter time, but also needs to ensure good performance and guarantee the repairing effect, the economy is good, and the method can consider adopting raw materials with higher added value and lower cost.
The common portland cement (OPC) commonly adopted at present causes interface damage due to large self-shrinkage stress, and the bonding force of new and old concrete is poor. The Magnesium Phosphate Cement (MPC) has the characteristics of low dry shrinkage, short setting time, good compatibility and high bonding strength with a concrete base layer. However, because MPC is abnormally sensitive to ambient temperature, its hydration process is greatly affected by temperature, resulting in an uncontrolled setting time. The polymer cement mortar has the defects of poor ageing resistance, difficult material storage, higher technical requirements on constructors in field preparation, higher production cost and construction cost and the like. Compared with the prior art, the special cement has certain advantages when being applied to road repairing materials, and meanwhile, the auxiliary cementing material can be used for replacing the special cement, so that the later strength is ensured not to be shrunk on the basis of meeting the requirements of quick hardening and early strength. On the other hand, the mechanical toughness of the repair material is improved by using toughening materials such as inorganic whiskers or fibers. Meanwhile, the proper admixture is doped, so that the construction performance of the paint for 15-20min and the mechanical performance of the paint for 1h are guaranteed, and the problems of insufficient bonding force with a base layer, difficulty in controlling the setting time, easiness in secondary cracking, poor durability and the like of the repair material used in the current market are solved. In addition, the carbon emission level of the material is reduced by using solid wastes instead of natural sand.
The invention considers that solid wastes such as steel slag and the like replace natural sand as fine aggregate of a repairing material. The steel slag has the advantages of high strength, high hardness, good wear resistance and the like, and can be used as fine aggregate instead of construction sand to be applied to cement-based materials. In 2021, the production amount of steel slag in China exceeds 1.2 hundred million tons, the steel slag accumulated in the society reaches more than 8 hundred million tons, the environment, soil and water quality are seriously affected by improper treatment of the steel slag, and at present, the general treatment mode of the domestic steel slag is low added value utilization such as recycling and circulating inside enterprises, being used for roadbed materials, manufacturing steel slag bricks, treating wastewater and the like, the treatment efficiency is low, and secondary pollution can be caused. According to incomplete statistics, the actual utilization rate of the steel slag is only about 35 percent due to the problems of poor stability of the steel slag and the like, the annual inventory amount is huge, and research on resource utilization of the steel slag is urgently needed. The research and development and application of the high-toughness super-early-strength rapid road repairing material based on solid waste utilization of steel slag and the like are of great significance for improving the quality of municipal roads, promoting high value-added utilization of industrial solid waste steel slag, and promoting green application of low-carbon building materials and organic updating of roads.
Disclosure of Invention
Based on the above, the invention provides a high-toughness ultra-early-strength rapid road repairing material based on steel slag solid waste utilization, which has the characteristics of high coagulation rate, high early strength, good toughness, good construction performance and the like, realizes rapid repair of local or large-area damage of a road, overcomes the defect that the construction performance, mechanical performance and economical efficiency of the existing repairing material cannot be considered simultaneously, and simultaneously utilizes industrial solid waste steel slag mixed with large amount of steel slag solid waste as fine aggregate to open up a new way for resource utilization by considering various influence factors and performances and referring to the requirements of performance indexes of the steel slag sand and the repairing material in the technical specification for applying steel slag sand to cement concrete pavements (YB/T4329-2012) and the part 1 of the rapid repairing material for road engineering cement concrete, namely cement-based repairing material (JT/T1211.1-2018).
The problem to be solved can be implemented by the following scheme.
The invention provides a high-toughness super early-strength rapid repair material for a road with large steel slag mixing amount solid waste, which comprises the following raw materials in parts by weight: 300-400 parts of cement, 400-500 parts of sand, 50-150 parts of auxiliary cementing material, 0-40 parts of toughening agent, 1-3 parts of water reducing agent, 0.1-0.75 part of coagulant, 1-5 parts of retarder, 10-30 parts of expanding agent, 0-0.5 part of water-retaining thickening agent and 80-140 parts of water, wherein the water-cement ratio is 0.20-0.26.
Preferably, the cement is a sulphoaluminate cement.
Preferably, the sand comprises quartz sand and steel slag sand, wherein the particle size of the quartz sand is 8-30 meshes, and 160-200 parts of the quartz sand is used; the particle size of the steel slag sand is 8-30 meshes, and 240-300 parts.
Preferably, the toughening agent is an inorganic toughening fiber.
The invention provides a preparation method of the high-toughness ultra-early-strength rapid repair material for the road with high steel slag solid waste, which comprises the following steps:
s1, weighing raw materials according to the mass parts of the high-toughness ultra-early-strength rapid repair material for the high-volume steel slag solid waste;
s2, uniformly mixing the raw materials weighed in the step S1 to prepare a dry material;
and S3, pouring water into the mixed dry materials, and stirring for at least 240S until the slurry state is uniform to obtain the material.
The invention provides an application of the high-toughness super early-strength rapid repair material for the high-volume steel slag solid waste in the rapid repair of municipal pavements.
Compared with the existing rapid repair material, the high-toughness ultra-early-strength rapid repair material for the road with high steel slag solid waste meets the construction performance of 15-20 minutes on the premise that the mixing amount of the industrial solid waste steel slag and sand is 60%, the compressive strength of the material in 1 hour can reach 35-55MPa, the breaking strength can reach 5-9MPa, the breaking strength of the material bonded with an old base material (mortar or concrete) for 2 hours is 2.5-5MPa, and the compressive strength of the material in 28 days is 2.5-5MPa80-90MPa, the flexural strength of 8-10MPa in 28 days, and the abrasion loss of 2-2.5kg/m in 28 days 2 The 112-day compressive strength is 90-100MPa, and the 112-day flexural strength is 10-11MPa. The positive progress effects of the invention are as follows:
(1) Can realize quick repair, meets the requirement of road open traffic strength, has the 1h compressive strength of more than 35MPa and the 2h bonding rupture strength with the base material of more than 3MPa.
(2) The quick repair for 1 hour is realized, meanwhile, the construction performance is better, and the construction performance of 15-20min is realized by adjusting the proportion of the retarder and the coagulant.
(3) The high-performance inorganic toughening fiber is used, so that the material has high toughness, and the 1h flexural strength is greater than 5MPa.
(4) The later strength of the repair material is kept good and is not shrunk, the 112d compressive strength is greater than 90MPa, and the flexural strength is greater than 10MPa.
(5) In the invention, 60 percent of steel slag is doped as fine aggregate to replace quartz sand, so that the cost of raw materials can be obviously reduced, and the material performance is basically equal to that of full quartz sand. In addition, the industrial solid waste steel slag is effectively consumed, and the high value-added utilization of the steel slag is promoted.
Detailed Description
The technical solution of the present invention is explained below with reference to examples.
Example 1
The embodiment provides a high-toughness super early-strength rapid repair material for a road, which is prepared from high-volume steel slag solid waste, and comprises the following components in parts by weight: 375 parts of sulphoaluminate cement, 176 parts of quartz sand, 264 parts of steel slag sand, 75 parts of auxiliary cementing material, 2.25 parts of water reducing agent, 0.5 part of coagulant, 2 parts of retarder, 10 parts of expanding agent and 95 parts of water.
The preparation method of the rapid repair material comprises the following steps:
s1, weighing the raw materials in parts by weight;
s2, uniformly mixing the weighed raw materials in the step S1 to prepare a dry material;
and S3, pouring water into the mixed dry material, and stirring for at least 240S until the slurry state is uniform to obtain the rapid repair material.
Tests show that the initial fluidity of the rapid repair material is 295mm, the fluidity of the rapid repair material is 254mm after the rapid repair material is placed for 20 minutes, and the rapid repair material has good fluidity, so that the rapid repair material can meet the construction time of about 20 minutes, and has the compression strength of 39.2MPa in 1 hour, the flexural strength of 5.5MPa, the 2h bonding flexural strength of 3MPa, the 28-day compression strength of 86.5MPa, the 28-day flexural strength of 8.5MPa and the 28-day abrasion loss of 2.33kg/m with the old base material (mortar or concrete) as well as the abrasion loss of 2.33kg/m 2 The 112-day compressive strength is 95.1MPa, and the 112-day flexural strength is 10.5MPa.
Example 2
The embodiment provides a high-toughness super early-strength rapid repair material for a road, which is prepared from high-volume steel slag solid waste, and comprises the following components in parts by weight: 400 parts of sulphoaluminate cement, 176 parts of quartz sand, 264 parts of steel slag sand, 50 parts of auxiliary cementing materials, 2.25 parts of water reducing agent, 0.5 part of coagulant, 2 parts of retarder, 27 parts of expanding agent, 32 parts of inorganic toughening fiber and 92.5 parts of water.
The preparation method of the rapid repair material comprises the following steps:
s1, weighing the raw materials according to the mass percentage;
s2, uniformly mixing the raw materials weighed in the step S1 to prepare a dry material;
and S3, pouring water into the mixed dry material, adding the inorganic toughening fiber after the dry material is discharged, and stirring for at least 240 seconds until the slurry state is uniform to obtain the rapid repair material.
Tests show that the initial fluidity of the rapid repair material is 265mm, the fluidity is 235mm after the rapid repair material is placed for 18 minutes, and the rapid repair material has good fluidity, so that the rapid repair material can meet the construction time of about 18 minutes, the 1-hour compressive strength is 51.0MPa, the flexural strength is 7.5MPa, the flexural strength of the rapid repair material is 4.6MPa after being bonded with an old base material (mortar or concrete) for 2 hours, the 28-day compressive strength is 89.9MPa, the 28-day flexural strength is 9.8MPa, and the 28-day abrasion loss is 2.15kg/m 2 The 112-day compressive strength was 95.7MPa, and the 112-day flexural strength was 10.9MPa.
Example 3
The embodiment provides a high-toughness super early-strength rapid repair material for a road with large steel slag mixing amount, which comprises the following components in parts by weight: 350 parts of sulphoaluminate cement, 176 parts of quartz sand, 264 parts of steel slag sand, 150 parts of auxiliary cementing material, 2.25 parts of water reducing agent, 0.5 part of coagulant, 1.5 parts of retarder, 30 parts of expanding agent, 40 parts of inorganic toughening fiber, 0.2 part of water retention thickener and 100 parts of water.
The preparation method of the rapid repair material comprises the following steps:
s1, weighing the raw materials according to the mass percentage;
s2, uniformly mixing the weighed raw materials in the step S1 to prepare a dry material;
and S3, pouring water into the mixed dry material, adding the inorganic toughening fiber after the dry material is discharged, and stirring for at least 240 seconds until the slurry state is uniform to obtain the rapid repair material.
Tests show that the initial fluidity of the rapid repair material is 270mm, the fluidity is 240mm after the rapid repair material is placed for 20 minutes, and the rapid repair material has good fluidity, so that the rapid repair material can meet the construction time of about 20 minutes, the 1-hour compressive strength is 35.1MPa, the flexural strength is 5.4MPa, the flexural strength of the rapid repair material is 2.5MPa after being bonded with an old base material (mortar or concrete) for 2 hours, the 28-day compressive strength is 82.8MPa, the 28-day flexural strength is 9.6MPa, and the 28-day abrasion loss is 2.50kg/m 2 The 112-day compressive strength is 97.5MPa, and the 112-day flexural strength is 10.8MPa.
The above description is only an alternative embodiment of the present invention, and a person skilled in the art may make various changes or modifications without departing from the general concept of the present invention, and such changes or modifications should fall within the scope of the present invention as claimed.
Claims (6)
1. The high-toughness super early-strength rapid repair material for the road with high steel slag solid waste content is characterized by comprising the following raw materials in parts by weight: 300-400 parts of cement, 400-500 parts of sand, 50-150 parts of auxiliary cementing material, 0-40 parts of toughening agent, 1-3 parts of water reducing agent, 0.1-0.75 part of coagulant, 1-5 parts of retarder, 10-30 parts of expanding agent, 0-0.5 part of water-retaining thickener and 80-140 parts of water, wherein the water-to-cement ratio is 0.20-0.26.
2. The high-toughness ultra-early-strength rapid repair material for the road, which is obtained by using steel slag solid wastes with large doping amount according to claim 1, is characterized in that the cement is sulphoaluminate cement.
3. The high-toughness ultra-early-strength rapid road repairing material with large-amount steel slag solid waste according to claim 1, characterized in that the sand comprises quartz sand and steel slag sand, the particle size of the quartz sand is 8-30 meshes, and 160-200 parts of the quartz sand; the grain diameter of the steel slag sand is 8-30 meshes, and 240-300 parts.
4. The high-toughness ultra-early-strength rapid repair material for the road with the large steel slag doping amount for solid waste according to claim 1, wherein the toughening agent is inorganic toughening fiber.
5. The preparation method of the high-toughness ultra-early-strength rapid repair material for the road with the great content of steel slag solid waste of any one of claims 1 to 4 is characterized by comprising the following steps of:
s1, weighing raw materials according to the mass parts of the high-toughness super early-strength rapid repair material for the road with the large steel slag mixing amount solid waste;
s2, uniformly mixing the weighed raw materials in the step S1 to prepare a dry material;
and S3, pouring water into the mixed dry material, and stirring for at least 240 seconds until the slurry state is uniform to obtain the rapid repair material.
6. The use of the high-toughness ultra-early-strength rapid repair material for roads, which is obtained by using steel slag solid wastes with large content according to any one of claims 1 to 4, in the rapid repair of municipal pavements.
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| CN202211557326.5A CN115745535A (en) | 2022-12-06 | 2022-12-06 | High-toughness super-early-strength rapid road repairing material with large-volume steel slag solid waste |
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| CN202211557326.5A CN115745535A (en) | 2022-12-06 | 2022-12-06 | High-toughness super-early-strength rapid road repairing material with large-volume steel slag solid waste |
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| CN202211557326.5A Pending CN115745535A (en) | 2022-12-06 | 2022-12-06 | High-toughness super-early-strength rapid road repairing material with large-volume steel slag solid waste |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118666553A (en) * | 2024-08-26 | 2024-09-20 | 山东交通学院 | Green low-carbon rapid reinforcement repair type concrete and preparation process thereof |
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| CN101302094A (en) * | 2008-06-20 | 2008-11-12 | 中冶宝钢技术服务有限公司 | Steel slag grouting material and preparation thereof |
| CN106082891A (en) * | 2016-06-16 | 2016-11-09 | 济南大学 | A kind of cement-base quick repairing ground surface material and preparation method thereof |
| CN107935518A (en) * | 2017-12-13 | 2018-04-20 | 上海东大化学有限公司 | A kind of highly doped steel slag gravity flowing levelling mortar of environment-friendly type and preparation method thereof |
| CN108059429A (en) * | 2017-11-28 | 2018-05-22 | 上海中冶环境工程科技有限公司 | A kind of gravity flowing levelling mortar and preparation method thereof |
| CN114133192A (en) * | 2021-11-29 | 2022-03-04 | 上海市建筑科学研究院有限公司 | High-strength rapid repairing material special for airport runway |
-
2022
- 2022-12-06 CN CN202211557326.5A patent/CN115745535A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101302094A (en) * | 2008-06-20 | 2008-11-12 | 中冶宝钢技术服务有限公司 | Steel slag grouting material and preparation thereof |
| CN106082891A (en) * | 2016-06-16 | 2016-11-09 | 济南大学 | A kind of cement-base quick repairing ground surface material and preparation method thereof |
| CN108059429A (en) * | 2017-11-28 | 2018-05-22 | 上海中冶环境工程科技有限公司 | A kind of gravity flowing levelling mortar and preparation method thereof |
| CN107935518A (en) * | 2017-12-13 | 2018-04-20 | 上海东大化学有限公司 | A kind of highly doped steel slag gravity flowing levelling mortar of environment-friendly type and preparation method thereof |
| CN114133192A (en) * | 2021-11-29 | 2022-03-04 | 上海市建筑科学研究院有限公司 | High-strength rapid repairing material special for airport runway |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118666553A (en) * | 2024-08-26 | 2024-09-20 | 山东交通学院 | Green low-carbon rapid reinforcement repair type concrete and preparation process thereof |
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Application publication date: 20230307 |