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A ground reinforcement grouting material

A grouting material and foundation reinforcement technology, applied in the field of grouting materials for foundation reinforcement, can solve the problems of long setting time of grout, poor reinforcement effect, poor stability, etc., achieve huge economic benefits and social value, adjustable setting time, low cost low effect

Inactive Publication Date: 2018-08-17
JIAMUSI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The direct reinforcement effect of ordinary portland cement slurry is not good, which is due to the long setting time of the slurry, the large shrinkage of the slurry after calculus, and the poor stability, which affect the reinforcement effect.

Method used

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  • A ground reinforcement grouting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This example is applicable to the situation where the site is relatively narrow and the terrain is relatively complex. The raw materials are prepared as follows: Portland cement 55Kg; sulphoaluminate cement 12Kg; slag fine powder 8Kg; fly ash 10Kg; gypsum 6Kg; 9Kg; calcium carbonate powder 3Kg; calcium hydroxide 0.6Kg; low-viscosity cellulose 0.02Kg; expansion agent 3Kg; water reducing agent 1.2Kg.

[0024] In this example, Portland cement is ordinary Portland cement with strength grade 42.5; sulphoaluminate cement is sulphoaluminate cement with strength grade 52.5; the fineness of slag powder is 450 mesh, and the specific surface area is 500m 2 / kg; the viscosity of low-viscosity cellulose is 100mpa s; the fineness of the calcium carbonate powder is 350 mesh; the fineness of the calcium hydroxide is 600 mesh; the expansion agent is calcium peroxide, sodium peroxide and calcium sulfoaluminate The mass ratio is a mixture of 4:3:5, and the fineness is 300 mesh; the water ...

Embodiment 2

[0026] This example is suitable for ordinary grouting. The raw materials are prepared as follows: Portland cement 48Kg; sulphoaluminate cement 10Kg; slag powder 6Kg; fly ash 8Kg; gypsum 10Kg; lime 8Kg; water glass 8Kg; calcium carbonate powder 4Kg; Calcium hydroxide 1Kg; low viscosity cellulose 0.03Kg; swelling agent 6Kg; water reducer 1.5Kg.

[0027] In this example, Portland cement is ordinary Portland cement with strength grade 52.5; sulphoaluminate cement is sulphoaluminate cement with strength grade 42.5; the fineness of slag powder is 400 mesh, and the specific surface area is 700m 2 / kg; the viscosity of low-viscosity cellulose is 300mpa s; the fineness of the calcium carbonate powder is 500 mesh; the fineness of the calcium hydroxide is 700 mesh; the expansion agent is calcium peroxide, sodium peroxide and calcium sulfoaluminate The mass ratio is a mixture of 3:2:3, and the fineness is 400 mesh; the water reducing agent is polycarboxylate water reducing agent, and the ...

Embodiment 3

[0029] This example is suitable for engineering reinforcement. The raw materials are prepared as follows: Portland cement 45Kg; sulphoaluminate cement 14Kg; slag fine powder 5Kg; fly ash 12Kg; gypsum 8Kg; Calcium oxide 1.2Kg; low viscosity cellulose 0.025Kg; expansion agent 5Kg; water reducer 1Kg.

[0030] In this example, Portland cement is ordinary Portland cement with strength grade 52.5; sulphoaluminate cement is sulphoaluminate cement with strength grade 52.5; the fineness of slag powder is 300 mesh, and the specific surface area is 650m 2 / kg; the viscosity of low-viscosity cellulose is 250mpa s; the fineness of the calcium carbonate powder is 400 mesh; the fineness of the calcium hydroxide is 650 mesh; the expansion agent is calcium peroxide, sodium peroxide and calcium sulfoaluminate The mass ratio is a mixture of 2:2:5, and the fineness is 350 mesh; the water reducing agent is polycarboxylate water reducing agent, and the water reducing rate is 30%; the amount of wate...

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Abstract

The invention provides a grouting material for foundation reinforcement. Slurry is prepared by selecting Portland cement a main material and adding admixtures of sulfate aluminium cement, slag micropowder, coal ash, gypsum, lime, sodium silicate, calcium carbonate powder, calcium hydroxide, low-viscosity cellulose and the like; the original loose soil bodies or cracks are cemented and solidified to form a new consolidation body, so that the constituents, the seepage performance, the chemical stability, the mechanical property and the like of the soil body structure are changed, and higher engineer properties are achieved.

Description

technical field [0001] The invention relates to a ground reinforcement grouting material. Background technique [0002] Grouting, also known as grouting, uses pressure feeding equipment to inject a certain proportion of slurry-like solidified material into the soil layer or cracks by means of pressure, and spreads, gels and solidifies it to form new stones, which are used to reinforce the soil layer and prevent it. Seepage and plugging to meet the construction requirements of civil engineering projects. [0003] Grouting technology has a history of more than 200 years, and its development has gone through four stages: (1802-1857) the development stage of the original clay slurry, (1858-1919) the primary cement slurry development stage, (1920-1969) Year) Intermediate chemical grout grouting development stage, (after 1969) modern grouting development stage. Grouting methods mainly include infiltration grouting, filling or crack grouting, splitting grouting, compaction grouti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26C04B28/04C04B111/70
CPCC04B28/26C04B2111/343C04B2201/50C04B7/02C04B7/32C04B18/141C04B18/08C04B22/143C04B22/064C04B14/28C04B24/383C04B22/068C04B22/14C04B24/24
Inventor 周宇孟祥华陈思远袁佳
Owner JIAMUSI UNIVERSITY
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