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Water glass-triacetyl glycerine grouting material and preparation method thereof

A technology of glycerol triacetate and grouting materials, which is applied in the direction of soil conditioning materials, chemical instruments and methods, organic fertilizers, etc., can solve the problems of low strength of reinforced fine sand, unstable permeability, and groundwater pollution, and achieve anti- The effect of high compressive strength, strong permeability and good permeability

Active Publication Date: 2009-12-09
BEIJING MUNICIPAL ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a kind of water glass grouting material for reinforcing fine sand and its preparation method, which solves the technical problems of low strength, unstable permeability and groundwater pollution when water glass is used as a grouting material to reinforce fine sand

Method used

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  • Water glass-triacetyl glycerine grouting material and preparation method thereof
  • Water glass-triacetyl glycerine grouting material and preparation method thereof
  • Water glass-triacetyl glycerine grouting material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] Embodiment 1, this reinforced powder fine sand water glass type grouting material, take water glass as the main material, take curing agent, catalyst, surfactant as auxiliary materials, and form according to the following parts by weight,

[0032] 100 parts of water;

[0033] 50 parts of water glass;

[0034] Glyceryl triacetate as 10 parts of curing agent;

[0035] Catalyst 0.1 part;

[0036] Surfactant 1 part.

[0037] Above-mentioned catalyst is acetic acid or dilute sulfuric acid, surfactant can be sodium dodecylbenzenesulfonate, and the modulus of water glass is 1.6~3.4, is preferably 2.8.

Embodiment 2

[0038] Embodiment 2, this reinforced powder fine sand water glass type grouting material, take water glass as the main material, take curing agent, catalyst, surfactant as auxiliary materials, and form according to the following parts by weight,

[0039] 100 parts of water;

[0040] 60 parts of water glass;

[0041] Glyceryl triacetate as 5 parts of curing agent;

[0042] Catalyst 0.2 part;

[0043] Surfactant 1.5 parts.

Embodiment 3

[0044] Embodiment 3, this reinforced powder fine sand water glass type grouting material is based on water glass, with curing agent, catalyst, and surfactant as auxiliary materials, and is formed by the following proportions by weight,

[0045] 100 parts of water;

[0046] 70 parts of water glass;

[0047] Glyceryl triacetate as 12 parts of curing agent;

[0048] Catalyst 0.3 part;

[0049] Surfactant 0.7 part.

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Abstract

The invention discloses a water glass grouting material for reinforcing fine sand, which is prepared by taking water glass as a main material, taking a curing agent, a catalyst and a surfactant as auxiliary materials, and is prepared from the following compositions in portion by weight: 100 portions of water, 40 to 75 portions of water glass, 3 to 15 portions of curing agent, namely triacetyl glycerine, 0.05 to 0.5 portion of catalyst, and 0.5 to 2 portions of surfactant. The sand consolidation strength of the grouting material can reach 1.2MPa, the curing time is 30min or so, and the grouting material solves the technical problem that the reinforcement of the fine sand by the water glass has low strength and unsteady permeability and pollutes underground water. The permeation radius can reach 50cm when compact fine powder is grouted under the grouting pressure of between 0.3 and 0.5MPa, and the grouting material is suitable for pre-consolidating fine sand layers during the construction of underground engineering.

Description

technical field [0001] The invention relates to a grouting material for building construction and a preparation method thereof. Background technique [0002] The reinforcement of silt and fine sand is one of the most difficult problems encountered in the process of foundation excavation. Since silt and fine sand are not easy to reinforce, foundation collapse often occurs during construction. At present, the grouting materials used to reinforce fine sand are mainly superfine cement and acidic water glass. Among them, ultrafine cement and other granular grouting materials have high strength, but there are problems such as unstable permeability, which can only solve the grouting problem of loose powder and fine sand. The acidic water glass grouting material has been widely used in the reinforcement of silty sand due to its good permeability, but its strength is low, and once it encounters a stratum with a large vault pressure, it is very easy to cause landslides. In order to ...

Claims

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Application Information

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IPC IPC(8): C09K17/46C09K103/00
CPCC04B2201/50C04B2111/70C04B2111/00017C04B28/26
Inventor 夏春蕾叶英
Owner BEIJING MUNICIPAL ENG RES INST
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