How to Repair material?

Quick Repair Method of Existing Expansion Joints in Railway Concrete Bridges,Preparation method for polyvinyl alcohol/silicon dioxide composite microspheres,Toad deep disease trenchless repair method based on foam geopolymer,Non-flowable quick-setting phosphate cement repair material with strong cohesive forces and preparation method thereof

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4 results about "Repair material" patented technology

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But manufacturers have developed some excellent repair materials that include various polymers leading to higher bond strength and durability. Most repair materials today are polymer-modified concrete, meaning that the basic material is a portland cement and aggregate mixture with a polymer (typically latex) added.

Quick Repair Method of Existing Expansion Joints in Railway Concrete Bridges

InactiveCN102296545ABridge structural detailsBridge erection/assemblyRepair materialEngineering

A rapid repair method for the existing expansion joints of railway concrete bridges, comprising the following steps: a, removing residual water-stop rubber strips; b, removing dirt and garbage on the concrete base surface and the exposed surface of metal edge beams, and then Drying; c, installing and positioning the underlayment and side lining; d, spraying the primer; e, pouring the repair material; f, spraying the top coat; g, after the repair material is basically cured, the repair is completed. The repair method of the invention can adapt to various irregular sizes of bridge joints; installation and replacement are fast and convenient; the polyurethane repair material itself has good durability and weather resistance, and is suitable for rapid repair; the price is moderate, and it is convenient for mass use.

Owner:RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI

Preparation method for polyvinyl alcohol/silicon dioxide composite microspheres

ActiveCN105344334AGood dispersionSpherical RegularityOther chemical processesMicrospherePolyvinyl alcohol

The invention provides a preparation method for polyvinyl alcohol/silicon dioxide composite microspheres and belongs to a preparation method for a composite microsphere material. Polyvinyl alcohol and tetraethyl orthosilicate are employed as raw materials, and polyvinyl alcohol/silicon dioxide (PVA/SiO2) composite microspheres are prepared in a water-in-oil system without any surfactants. Tetraethyl orthosilicate is hydrolyzed fully in a PVA solution in an acidic condition, and uniform PVA/SiO2 composite sol is formed; the sol is subjected to dispersion and crosslinking in a water-in-oil system without surfactants, and finally PVA/SiO2 composite microspheres are obtained. The technology is simple, the repeatability is good, energy consumption is low and the cost is low. Surfactant residual and agglomeration of nano inorganic particles in the process of preparing composite microspheres through a traditional emulsification method are avoided. The microspheres are advantaged by regular sphere, high dispersibility and uniform microstructure, and can be used as a drug carrier, an injection-type bone tissue repairing material or a heavy metal ion adsorption material.

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Owner:CHINA UNIV OF MINING & TECH

Toad deep disease trenchless repair method based on foam geopolymer

InactiveCN112358245AReduce accumulationReduce the burden onSolid waste managementCement productionArchitectural engineeringGeopolymer

The invention discloses a road deep disease trenchless repair method based on a foam geopolymer. The road deep disease trenchless repair method comprises a road deep disease trenchless repair construction process and a corresponding foam geopolymer repair material. The trenchless repair construction process for the deep road diseases comprises a large-hole and small-hole spaced grouting method, main diseases are repaired by compacting, splitting and grouting large holes from bottom to top, and fine diseases are repaired by permeating small holes from top to bottom. The situation that waste iscaused by excessive grouting during single grouting, and some small cracks and holes are not effectively filled can be effectively avoided. The invention also provides a foamed geopolymer grouting material for road grouting reinforcement, the grouting material is divided into a component A and a component B, and has the characteristics of low density, high strength, good durability and no shrinkage after being cured, the density can reach 600-700kg / m<3>, and the 7-day compressive strength can reach 10-12MPa.

Owner:HUNAN COMM RES INST CO LTD

Non-flowable quick-setting phosphate cement repair material with strong cohesive forces and preparation method thereof

ActiveUS11339092B2Quick SetupImprove crack resistanceSolid waste managementCarboxylic acidP phosphate

The present invention belongs to the field of composite materials, and particularly to a non-flowable quick-setting phosphate cement repair material with strong cohesive forces and the preparation method thereof. The material comprises the following raw materials in percentage by weight: 20% to 40% of sand, 5% to 12% of ammonium dihydrogen phosphate, 10% to 25% of magnesium oxide, 2% to 8% of fly ash, 30% to 60% of rubber powder, 6% to 10% of silica fume, 0.35% to 0.6% of a polycarboxylate high efficiency water-reducing agent, 1% to 5% of sodium silicate, 1.5% to 2% of a polypropylene fiber, 0.5% to 2% of a retarder, and 8% to 10% of water. The material is used as the repair material for the special positions of bottom boards of bridges or facades of buildings which are damaged, and the repair effect thereof is remarkable.

Owner:YU JIAHUAN +1

4 results about "Repair material" patented technology

Quick Repair Method of Existing Expansion Joints in Railway Concrete Bridges

Preparation method for polyvinyl alcohol/silicon dioxide composite microspheres

Toad deep disease trenchless repair method based on foam geopolymer

Non-flowable quick-setting phosphate cement repair material with strong cohesive forces and preparation method thereof

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