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Low linear expansion coefficient epoxy resin based cement concrete road fast repairing material and preparation method thereof

A linear expansion coefficient, cement concrete technology, applied in the field of building materials, can solve the problems of temperature deformation difference, large difference in expansion coefficient, interface damage and so on

Active Publication Date: 2019-03-29
鄂尔多斯市慧达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN101121812A discloses an epoxy resin-based quick repair material and its preparation method, which consists of sand, talcum powder, epoxy resin, polyamide and thinner in parts by mass of 70-75:10-15:5-10: 4~10: made of 0.5~1.5, can achieve moderate cost, early strength (3d can reach 60MPa), but moderate later strength, good adhesion, convenient construction, short construction period, no need to close traffic and other effects
However, in the patent documents listed above, there is a large difference in the expansion coefficient between the epoxy resin mortar and the cement concrete pavement, and there are technical problems that the deformation of the interface between the original road and the repair material is different with temperature.
Especially in the severe cold areas in northern my country, the highest temperature in summer is 50-60°C, the lowest temperature in winter reaches -40°C, and the difference between high and low temperatures reaches about 100°C. Since the linear expansion coefficient of epoxy resin mortar is larger than that of cement concrete, temperature changes can cause Internal stress is generated at the interface of the two materials, and the destruction of the interface is accelerated after alternating cold and heat, thus causing repair failure

Method used

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  • Low linear expansion coefficient epoxy resin based cement concrete road fast repairing material and preparation method thereof
  • Low linear expansion coefficient epoxy resin based cement concrete road fast repairing material and preparation method thereof
  • Low linear expansion coefficient epoxy resin based cement concrete road fast repairing material and preparation method thereof

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preparation example Construction

[0032]The present invention also provides a preparation method of the low linear expansion coefficient epoxy resin-based cement concrete road rapid repair material described in the above technical solution, comprising the following steps:

[0033] Activated coal gasification slag is obtained by calcining and activating the coal gasification slag;

[0034] Mixing the activated coal gasification slag with a silane coupling agent modification solution to perform a modification reaction to obtain a modified coal gasification slag;

[0035] The medium sand, the modified coal gasification slag and the waste ceramic powder are sequentially added to the epoxy resin slurry and mixed to obtain a low linear expansion coefficient epoxy resin-based cement concrete road quick repair material;

[0036] The epoxy resin slurry includes diluent, curing agent, toughening agent and epoxy resin.

[0037] In the invention, after the coal gasification slag is calcined and activated, activated coal ...

Embodiment 1

[0054] Weigh 100Kg of coal gasification slag and pass it through a 100-mesh square hole sieve, take the sieve with a fineness of less than 100 mesh for drying treatment, and then calcinate and activate it under oxygen-enriched conditions at 600°C for 1 hour to obtain activated coal gasification slag;

[0055] Weigh 2Kg of silane coupling agent Si69 and 98Kg of absolute ethanol, mix and stir evenly at room temperature to prepare a 2wt% silane coupling agent modification solution, then pour 200Kg of activated coal gasification slag into the silane coupling agent modification solution, The weight ratio of silane coupling agent modified solution to activated coal gasification slag is 1:100, vigorously stirred for 30 minutes, and dried at 125°C to obtain modified coal gasification slag;

[0056] Weigh 100Kg of waste ceramic floor tiles for construction and place them in a ball mill for grinding, pass through a 200-mesh square hole sieve, take the under-sieve and place them in a drye...

Embodiment 2

[0064] Weigh 100Kg of coal gasification slag and pass it through a 100-mesh square hole sieve, take the sieve with a fineness of less than 100 mesh for drying treatment, and then calcinate and activate it under oxygen-enriched conditions at 600°C for 1 hour to obtain activated coal gasification slag;

[0065] Weigh 2Kg of silane coupling agent Si69 and 98Kg of absolute ethanol, mix and stir evenly at room temperature to prepare a 2wt% silane coupling agent modification solution, then pour 200Kg of coal gasification slag into the silane coupling agent modification solution, silane The weight ratio of coupling agent modification solution and activated coal gasification slag is 1:100, vigorously stirred for 30 minutes, and dried at 125°C to obtain modified coal gasification slag;

[0066] Weigh 100Kg of waste ceramic floor tiles for construction and place them in a ball mill for grinding, pass through a 200-mesh square hole sieve, take the under-sieve and place them in a dryer for...

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Abstract

The invention provides a low linear expansion coefficient epoxy resin based cement concrete road fast repairing material and a preparation method thereof, and belongs to the technical field of a building material. The epoxy resin based cement concrete road fast repairing material provided by the invention is prepared from the following ingredients in parts by weight: 100 parts of epoxy resin, 30 to 50 parts of curing agents, 5 to 10 parts of toughening agents, 5 to 15 parts of diluents, 50 to 100 parts of modified coal gasification slag, 50 to 100 parts of waste ceramic powder and 400 to 600 parts of medium sand. The modified coal gasification slag is prepared from coal gasification slag through roasting activation and modification reaction. The epoxy resin based cement concrete road fastrepairing material provided by the invention has the advantages of low linear expansion coefficient, small deformation quantity along with temperature change, high intensity, good bonding performance,high durability and low production cost, and is favorable for the popularized application of the epoxy resin mortar.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an epoxy resin-based quick repair material for cement concrete roads with a low coefficient of linear expansion and a preparation method thereof. Background technique [0002] In recent years, the transportation and logistics industry has developed rapidly, and the load on the road is increasing, and the damage is becoming more and more frequent. Road damage often starts from a small part. If it is not repaired in time, it may cause traffic accidents and damage to a larger area. Therefore, road repair projects are one of the important tasks of municipal engineering and road management departments. Road repair materials play a decisive role in the entire repair process and repair effect. For cement concrete roads, if the existing ordinary Portland cement concrete materials are used for repairs, there will be long maintenance periods and long road closures, which will s...

Claims

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Application Information

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IPC IPC(8): C04B26/14C04B111/20C04B111/72
CPCC04B26/14C04B2111/0075C04B2111/20C04B2111/72C04B2201/50C04B18/023C04B24/026C04B24/42C04B18/165C04B18/22C04B14/06C04B2103/0068
Inventor 雒锋夏茂盛徐少南
Owner 鄂尔多斯市慧达科技有限公司
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