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Modified grouting material

A grouting material and modification technology, which is applied in the field of material science, can solve problems such as poor durability, limited research, and pollution prices, and achieve the effects of improving compactness, enhancing waterproof performance and flame retardancy, and expanding the scope of application

Inactive Publication Date: 2015-12-30
王璐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although chemical grouting materials have the advantages of good stability, strong injectability, low viscosity, and easy control of gel time, etc., and can be injected into relatively small cracks or pores in rock and soil, their disadvantages are: relatively low strength. Low, poor durability, certain toxicity, pollution to the environment and expensive
Although some achievements have been made in the research of grouting materials, the research on the dual mixing of polymer and mineral admixtures in grouting materials is still very limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In this example, the SiO of silica sol 2 The content is 40%, the particle size range is 50nm; the fineness of the mineral admixture is 250 mesh; the modulus of sodium silicate is 1.7;

[0031] A modified grouting material, made of the following raw materials in proportion by weight: 60 parts of Portland cement, 13 parts of aluminate cement, 2.5 parts of polyvinyl alcohol, 2.5 parts of polyvinyl acetate, 2.5 parts of silica sol 4 parts, silica fume powder 4 parts, fly ash 18 parts, steel slag 9 parts, dimethyl silicone oil 0.2 parts, sodium silicate 3 parts, slaked lime 3 parts, carboxymethyl cellulose 0.2 parts, sodium dodecyl sulfonate 0.3 parts, 3 parts of bentonite, 0.4 parts of fine sand, 0.4 parts of sodium carbonate, 0.03 parts of ceramic fiber, 0.02 parts of latex powder, 0.03 parts of dolomite, 0.02 parts of pyrophyllite, 7 parts of sodium methyl silicate.

[0032] Grouting material properties: water separation rate 0.89%, viscosity 18.48S, initial setting time...

Embodiment 2

[0034] In this example, the SiO of silica sol 2The content is 30%, the particle size range is 20nm; the fineness of the mineral admixture is 200 mesh; the modulus of sodium silicate is 1.5;

[0035] A modified grouting material, made of the following raw materials in proportion by weight: 55 parts of Portland cement, 10 parts of aluminate cement, 2 parts of polyvinyl alcohol, 2 parts of polyvinyl acetate, 2 parts of silica sol 2 parts, 2 parts of silica fume powder, 15 parts of fly ash, 8 parts of steel slag, 0.1 part of dimethyl silicone oil, 2 parts of sodium silicate, 2 parts of slaked lime, 0.1 part of carboxymethyl cellulose, sodium dodecyl sulfonate 0.2 parts, 2 parts of bentonite, 0.2 parts of fine sand, 0.2 parts of sodium carbonate, 0.02 parts of ceramic fiber, 0.01 part of latex powder, 0.02 parts of dolomite, 0.01 part of pyrophyllite, 6 parts of sodium methyl silicate.

[0036] Grouting material properties: water separation rate 0.92%, viscosity 18.56S, initial se...

Embodiment 3

[0038] In this example, the SiO of silica sol 2 The content is 50%, the particle size range is 80nm; the fineness of the mineral admixture is 300 mesh; the modulus of sodium silicate is 1.9;

[0039] A modified grouting material, made of the following raw materials in proportion by weight: 65 parts of Portland cement, 15 parts of aluminate cement, 3 parts of polyvinyl alcohol, 3 parts of polyvinyl acetate, 3 parts of silica sol Parts, 5 parts of silica fume powder, 20 parts of fly ash, 10 parts of steel slag, 0.3 parts of dimethyl silicone oil, 4 parts of sodium silicate, 4 parts of slaked lime, 0.3 parts of carboxymethyl cellulose, sodium dodecyl sulfonate 0.4 parts, bentonite 4 parts, fine sand 0.6 parts, sodium carbonate 0.6 parts, ceramic fiber 0.04 parts, latex powder 0.03 parts, dolomite 0.04 parts, pyrophyllite 0.03 parts, sodium methyl silicate 8 parts.

[0040] Grouting material properties: water separation rate 0.95%, viscosity 18.62S, initial setting time 17min, fi...

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Abstract

The invention discloses a modified grouting material. The grouting material is prepared from raw materials in parts by weight as follows: 55-65 parts of portland cement, 10-15 parts of aluminate cement, 6-9 parts of a polymer emulsion, 25-35 parts of a mineral additive, 0.1-0.3 parts of a foam stabilizer, 4-8 parts of an activator, 0.1-0.3 parts of a water-retaining agent, 0.2-0.4 parts of a surfactant, 2-4 parts of bentonite, 0.2-0.6 parts of fine sand, 0.2-0.6 parts of sodium carbonate, 0.02-0.04 parts of ceramic fiber, 0.01-0.03 parts of emulsion powder, 0.02-0.04 parts of dolomite, 0.01-0.03 parts of pyrophyllite and 6-8 parts of methyl sodium silicate. Flexibility of polymer and rigidness of the mineral additive are jointly used for modification, the grouting material with excellent performance is obtained, and the application range is enlarged.

Description

technical field [0001] The invention relates to a modified grouting material, belonging to the technical field of material science. Background technique [0002] With the rapid development of my country's economy, the scale of transportation construction (such as high-speed rail, subway, highway) is getting larger and larger, and underground engineering and water conservancy projects are also receiving more and more attention. This is due to the increasing number of high-speed railways and subways, and the increasingly complex conditions of underground transportation projects, which have gradually revealed problems such as collapse, water inrush, and mud gushing; in addition, the traffic flow and axle load have increased rapidly, and roads have gradually experienced subsidence, muddying, Structural defects such as cracks. In order to solve these problems, people adopt grouting technology to reinforce and seal underground works and water conservancy projects. [0003] The g...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B22/06C04B14/38C04B24/42
Inventor 王璐
Owner 王璐
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