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Geopolymer-based cement pavement crack quick repair material, method for preparing same and application of geopolymer-based cement pavement crack quick repair material

A technology for cement pavement and repairing materials, applied in the field of road repairing materials, can solve the problem that geopolymer grouting/grouting materials cannot meet performance requirements, etc., and achieve the effects of short open traffic time, good durability and simple preparation method

Active Publication Date: 2018-08-21
湖北恒畅路桥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for repairing cracks in cement concrete pavement and other diseases, geopolymer grouting / grouting materials cannot meet its performance requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a kind of geopolymer-based cement pavement crack quick repair material, and its preparation process is as follows:

[0027] Grind 45 parts of metakaolin, 0.1 part of silica fume, 1 part of P.O42.5 Portland cement and 1 part of rice husk ash in a planetary ball mill for 15 minutes to obtain a premix, which is set aside; Add premix and 0.1 part of rice straw fiber into the concrete mixer, stir for 60s, then add 10 parts of alkali activator (modulus 1.0), 0.5 part of silane coupling agent KH550, 0.1 part of polycarboxylate water reducer With 1 part of water, continue to stir for 120s, then pour, vibrate, and maintain under standard curing conditions.

[0028] Wherein, the alkali activator is made of NaOH and a solid content of 30-40wt% Na 2 SiO 3 It is obtained by compounding the solution; the rice straw fiber is obtained by immersing in a 55-65°C, 4-6wt% NaOH solution for 20-30 hours, then rinsed with deionized water and dried; the particle size...

Embodiment 2

[0030] This embodiment provides a kind of geopolymer-based cement pavement crack quick repair material, and its preparation process is as follows:

[0031] 65 parts of metakaolin calcined at 650°C for 8 hours, 0.3 parts of silica fume, 5 parts of P.O42.5 portland cement and 2 parts of rice husk ash were ground in a planetary ball mill for 15 minutes to obtain a premix and set aside; Add premix and 0.3 parts of rice straw fiber into the concrete mixer, stir for 60s, then add 20 parts of alkali activator (modulus 1.5), 1 part of silane coupling agent KH550, 0.5 part of polycarboxylate water reducer With 2 parts of water, continue to stir for 120s, then pour, vibrate, and maintain under standard curing conditions.

[0032] The preparation method of the alkali activator and the rice straw fiber is the same as in Example 1, the particle size of the rice husk ash is ≤100nm, and the particle size of the metakaolin is 50-100nm.

Embodiment 3

[0034] This embodiment provides a kind of geopolymer-based cement pavement crack quick repair material, and its preparation process is as follows:

[0035] Grind 45 parts of metakaolin, 0.3 parts of silica fume, 5 parts of P.O42.5 portland cement and 2 parts of rice husk ash in a planetary ball mill for 15 minutes to obtain a premix, which is set aside; Add premix and 0.3 parts of rice straw fiber into the concrete mixer, stir for 60s, then add 15 parts of alkali activator (modulus 1.2), 1 part of silane coupling agent KH560, 0.3 parts of polycarboxylate water reducer And 1.5 parts of water, continue to stir for 120s, then pour, vibrate, and maintain under standard curing conditions.

[0036] The preparation method of the alkali activator and the rice straw fiber is the same as in Example 1, the particle size of the rice husk ash is ≤100nm, and the particle size of the metakaolin is 50-100nm.

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Abstract

The invention discloses a geopolymer-based cement pavement crack quick repair material, a method for preparing the same and application of the geopolymer-based cement pavement crack quick repair material. The geopolymer-based cement pavement crack quick repair material comprises, by weight, 10-25 parts of alkali activators, 45-65 parts of metakaolin, 0.1-0.5 part of silica fume, 1-2 parts of water, 0.1-0.5 part of water reducing agents, 1-5 parts of silicate cement, 1-2parts of rice husk ash, 0.1-0.5 part of rice straw fibers and 0.5-1 part of silane coupling agents. The geopolymer-based cement pavement crack quick repair material, the method and the application have the advantages of high strength, short traffic opening time, good durability, strong new-old concrete interface action and low cost.

Description

technical field [0001] The invention belongs to the technical field of road repair materials, and more specifically relates to a geopolymer-based cement pavement crack rapid repair material and its preparation method and application. Background technique [0002] Due to design, construction, environment, traffic load and other reasons, cement concrete pavement will have different degrees of crack damage, such as cracks, edge gnawing, mud pumping, pits, etc. If these small-scale local diseases cannot be repaired in time and effectively, it will eventually lead to more serious damage to the pavement and cause greater economic losses. Therefore, in order to improve the service quality of cement concrete and prolong its service life, it is necessary to repair the cracks in the cement pavement. At present, cement pavement repair materials mainly include two types: inorganic and organic. Organic repair materials include epoxy resin, polyurethane, rubber asphalt, etc., but there ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/72
CPCC04B28/04C04B2111/0075C04B2111/72C04B12/005C04B14/106C04B18/146C04B18/101C04B18/24C04B22/062C04B12/04C04B24/42C04B2103/302
Inventor 刘杰胜龚晓强张荣堂董莪何翔伦云霞涂妮
Owner 湖北恒畅路桥有限公司
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