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Dual-fluid grouting material for sand and gravel stratum and application method thereof

A technology of double-liquid grouting and sand and pebbles, which is applied in the field of civil engineering, can solve problems such as the decrease in the strength of concretions, the difficulty of accurately controlling the addition amount, and the difficulty in reaching the design strength, etc., to achieve a wide range of grouting, increase fluidity, and improve the quality of grout. Evenly spread effect

Inactive Publication Date: 2013-08-28
BEIJING MUNICIPAL CONSTR +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the addition of retarder, the strength of the stone body decreases sharply, and it is difficult to reach the design strength
And the retarder disodium hydrogen phosphate is difficult to dissolve, and the amount of addition is not easy to control accurately

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A double-liquid grouting material for sand and pebble formations, including liquid I and liquid II, wherein,

[0017] I liquid comprises the following components by weight: water 40 cement 60 polycarboxylate sodium salt type dispersant 1.5;

[0018] II liquid comprises the following components by weight: water 40 water glass 60.

[0019] The concrete use of above-mentioned grouting material comprises the following steps:

[0020] 1) Mix 40 parts by weight of water, 60 parts by weight of cement and 1.5 parts by weight of polycarboxylate sodium salt type dispersant through a medium-speed mixer to form I liquid, and place it in container ①;

[0021] 2) Stir 40 parts by weight of water and 60 parts by weight of water glass evenly to form II liquid, and place it in container ②;

[0022] 3) Adjust the grouting final pressure of the grouting pump to 1.5-2.0Mpa, inject liquid I in step 1) and liquid II in step 2) from containers ① and ② respectively through the grouting pipe ...

Embodiment 2

[0024] A double-liquid grouting material for sand and pebble formations, including liquid I and liquid II, wherein,

[0025] Liquid I includes the following components by weight: water 60 cement 40 polycarboxylate sodium salt type dispersant 0.2;

[0026] II liquid comprises the following components by weight: water 60 water glass 40.

[0027] The concrete use of above-mentioned grouting material comprises the following steps:

[0028] 1) Mix 60 parts by weight of water, 40 parts by weight of cement and 0.2 parts by weight of polycarboxylate sodium salt type dispersant through a medium-speed mixer to form I liquid, and place it in container ①;

[0029] 2) Stir 60 parts by weight of water and 40 parts by weight of water glass evenly to form II liquid, and place it in container ②;

[0030] 3) Adjust the grouting final pressure of the grouting pump to 1.5-2.0Mpa, inject liquid I in step 1) and liquid II in step 2) from containers ① and ② respectively through the grouting pipe a...

Embodiment 3

[0032] A double-liquid grouting material for sand and pebble formations, including liquid I and liquid II, wherein,

[0033] I liquid comprises the following components by weight: water 50 cement 50 polycarboxylate sodium salt type dispersant 0.8;

[0034] Liquid II includes the following components in parts by weight: 50% of water and 50% of water glass.

[0035] The concrete use of above-mentioned grouting material comprises the following steps:

[0036] 1) Stir 50 parts by weight of water, 50 parts by weight of cement and 0.8 parts by weight of polycarboxylate sodium salt type dispersant through a medium-speed mixer to form I liquid, and place it in container ①;

[0037] 2) Stir 50 parts by weight of water and 50 parts by weight of water glass evenly to form II liquid, and place it in container ②;

[0038] 3) Adjust the grouting final pressure of the grouting pump to 1.5-2.0Mpa, inject liquid I in step 1) and liquid II in step 2) from containers ① and ② respectively throu...

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PUM

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Abstract

The invention discloses a dual-fluid grouting material for a sand and gravel stratum, which comprises a fluid I and a fluid II, wherein the fluid I comprises the following components in parts by weight: 40-60 parts of water, 40-60 parts of cement and 0.2-1.5 parts of sodium-polycarboxylate dispersing agent; and the fluid II comprises the following components in parts by weight: 40-60 parts of water and 40-60 parts of water glass. The invention also discloses an application method of the dual-fluid grouting material for a sand and gravel stratum. Since the sodium-polycarboxylate dispersing agent can be adsorbed to the solid particle surface, the condensed solid particle surface can be easily wetted, thereby preparing the grout for a sand and gravel stratum. Compared with the traditional cement-water glass grout, the grout disclosed by the invention has higher flowability, uniformity and injectability, so that the dual-fluid grout has wide injection range and more uniform dispersion in the sand and gravel stratum.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular, the invention relates to a double-liquid grouting material for sand and pebble formations and a method for using the same. Background technique [0002] The existing cement-sodium silicate grouting material, the solidification time can be adjusted from a few seconds to tens of minutes, the compressive strength of the stone body is high, up to 10-20MPa, and the stone rate after setting can reach more than 95%. The permeability coefficient is 10 -3 cm / s, it can be used for rock mass with cracks above 0.2mm or sand layer with particle size above 1mm; its injectability is higher than that of cement slurry, and it is currently the most researched and applied grouting material. Construction practice has found that the injectability of double-liquid grout for curtain grouting in sand and pebbles is poor, and it is difficult to ensure the range (thickness) of the curtain. Once the cement...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B28/26
Inventor 王文正孔恒杨建华刘彦林郑雪梅姚毅任有旺李博凯张德华安声镛安善福
Owner BEIJING MUNICIPAL CONSTR
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