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High-speed rail concrete base repairing material and repairing method thereof

A technology for repairing materials and base layers, which is used in tracks, track maintenance, construction, etc., and can solve problems such as high cost, inapplicability to high-speed rail concrete foundation repair construction, and complex construction conditions.

Inactive Publication Date: 2021-09-03
京沪高速铁路股份有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the above-mentioned existing repairing materials have poor performance, complex construction conditions and high cost, and are not suitable for repairing construction of high-speed rail concrete foundations; the existing repairing methods cannot improve the performance of concrete. Problems that cannot be patched quickly

Method used

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  • High-speed rail concrete base repairing material and repairing method thereof
  • High-speed rail concrete base repairing material and repairing method thereof
  • High-speed rail concrete base repairing material and repairing method thereof

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Effect test

Embodiment 1

[0027] A high-iron Base concrete repair material, the repair material by the magnesium ammonium phosphate cement, additives, mineral admixtures, aggregate and fiber composite obtained by stirring in an aqueous environment, and magnesium ammonium phosphate cement and mineral admixture of water with a weight ratio of 1: 0.1; weight ratio of magnesium ammonium phosphate cement additive is 0.02: 1; fiber and magnesium ammonium phosphate cement volume ratio of 0.005: 1; magnesium ammonium phosphate cement powder made of magnesium oxide, ammonium dihydrogen phosphate, compound retarder composed of a retarder compound borax, disodium hydrogen phosphate, organic acids; liquid additive is sodium silicate, which modulus is 2.8 to 4.0; the use of mineral admixtures repairing material magnesium oxide powder equivalent alternative , an alternative to magnesium oxide powder in an amount of 0% by weight percentage, by weight percent basis, comprising fly ash mineral admixtures 0%, 0% metakaolin....

Embodiment 2

[0043] A high-iron Base concrete repair material, the repair material by the magnesium ammonium phosphate cement, additives, mineral admixtures, aggregate and fiber composite obtained by stirring in an aqueous environment, and magnesium ammonium phosphate cement and mineral admixture of water with a weight ratio of 1: 0.1; weight ratio of magnesium ammonium phosphate cement additive is 0.02: 1; fiber and magnesium ammonium phosphate cement volume ratio of 0.005: 1; magnesium ammonium phosphate cement powder made of magnesium oxide, ammonium dihydrogen phosphate, compound retarder composed of a retarder compound borax, disodium hydrogen phosphate, organic acids; liquid additive is sodium silicate, which modulus is 2.8 to 4.0; the use of mineral admixtures repairing material magnesium oxide powder equivalent alternative , an alternative to an amount of 20% weight percent of magnesium oxide powder, by weight percentage basis, mineral admixture comprising 50% fly ash, metakaolin 50%. ...

Embodiment 3

[0059] A high-iron Base concrete repair material, the repair material by the magnesium ammonium phosphate cement, additives, mineral admixtures, aggregate and fiber composite obtained by stirring in an aqueous environment, and magnesium ammonium phosphate cement and mineral admixture of water with a weight ratio of 1: 0.1; weight ratio of magnesium ammonium phosphate cement additive is 0.01: 1; fiber and magnesium ammonium phosphate cement volume ratio of 0.005: 1; magnesium ammonium phosphate cement powder made of magnesium oxide, ammonium dihydrogen phosphate, compound retarder composed of a retarder compound borax, disodium hydrogen phosphate, organic acids; liquid additive is sodium silicate, which modulus is 2.8 to 4.0; the use of mineral admixtures repairing material magnesium oxide powder equivalent alternative , an alternative to an amount of 20% weight percent of magnesium oxide powder, by weight percentage basis, mineral admixture comprising 50% fly ash, metakaolin 50%. ...

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Abstract

The invention discloses a high-speed rail concrete base repairing material and a repairing method thereof, and belongs to the technical field of building repairing materials and repairing methods. The repairing material is formed by compounding and stirring magnesium ammonium phosphate cement, an additive, a mineral admixture, aggregate and fiber in a water environment. The repairing material has the advantages of high early strength and high strength, and realizes rapid repairing in the window period of the high-speed rail; the binding power is strong and close to the linear expansion coefficient; the repairing material has good durability, and can overcome the defects that an organic repairing material is easy to age and short in service life; the defect of brittle failure of a cement-based material is overcome; according to the repairing method, a nanometer permeable material is adopted to seal and reinforce a degraded concrete base layer, the defect that other repairing materials cannot improve the performance of base layer concrete is overcome, and the binding power of the base layer and the repairing layer is enhanced; and independent packaging is adopted to meet the requirement for short window period time, repairing of the high-speed rail concrete base is efficiently completed, and the material and the method are suitable for large-area popularization.

Description

Technical field [0001] The present invention belongs to the technical field building materials and repair method for repairing concrete relates to a method of repairing and patching material the base layer, in particular a high-iron concrete repair material and the base layer repairing method. Background technique [0002] my country's construction of high-speed railway CRTSII type of slab track short period, large scale, with little experience, lack of research on its service performance, built high-speed railway has been widely used in the country. Long and complicated operations bad environment, resulting in a high-frequency use, and loads the base plate CRTSII type slab track, the elastic mortar layer, the track plate varying degrees of damage and the deterioration (such as a rail arch board warpage, the mortar layer void, take slurry back strip (broad, narrow seam) from the joint degradation, the support layer and the base plate of concrete, concrete deterioration stopper la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34E01B37/00C04B12/02C04B111/72
CPCC04B28/344E01B37/00C04B12/02C04B2111/72C04B2201/50C04B12/04C04B18/08C04B14/106C04B14/06C04B14/42
Inventor 杨怀志刘学文朱星盛张继文王刚
Owner 京沪高速铁路股份有限公司
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