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Side slope grouting slurry for silty-fine sand embankment widening and method for preparing same

A technology for silty sand and slope, which is applied in the field of slope grouting slurry and its preparation, can solve the problems of adverse environmental impact and high cost of raw materials, and achieves the effects of low price, long gelling time and wide sources.

Active Publication Date: 2012-10-31
SHIJIAZHUANG TIEDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strength of reinforcement is relatively high, but the cost of raw materials is also high. In actual use, it has adverse effects on the environment and is only used in some special places.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The side slope grouting slurry used for widening powder fine sand embankment according to the present invention is made of the following raw materials in proportions by mass: 3 parts of water glass, 2 parts of acetic acid, 1 part of calcium chloride, hydrogen phosphate 0.2 part of disodium, 0.1 part of ferric chloride and 0.1 part of aluminum chloride, 0.1 part of phosphoric acid or sulfuric acid.

[0029] The preparation method of the above-mentioned side slope grouting slurry for widening of fine sand embankment, the specific steps are as follows:

[0030] (1) Prepare acetic acid into an acetic acid solution with a mass percentage of 5-25%;

[0031] (2) Prepare the water glass solution with a modulus of 2.3-3.0 into a water glass solution with a mass percentage of 5-25%, and then add hydrogen phosphate with a mass percentage of 1-10% in the above-mentioned prepared water glass solution according to the proportion Disodium solution, fully stirred for subsequent use; ...

Embodiment 2

[0039] The side slope grouting slurry used for widening powder fine sand embankment according to the present invention is made of the following raw materials in proportions by mass: 9 parts of water glass, 6 parts of acetic acid, 3 parts of calcium chloride, hydrogen phosphate 1.6 parts of disodium, 2.5 parts of ferric chloride and 2.5 parts of aluminum chloride, 1.5 parts of phosphoric acid or sulfuric acid.

[0040] The preparation method is the same as in Example 1.

Embodiment 3

[0042] The side slope grouting slurry used for widening powder fine sand embankment according to the present invention is made of the following raw materials in proportions by mass: 15 parts of water glass, 10 parts of acetic acid, 5 parts of calcium chloride, hydrogen phosphate 3 parts of disodium, 5 parts of ferric chloride and 5 parts of aluminum chloride, 3 parts of phosphoric acid or sulfuric acid.

[0043] The preparation method is the same as in Example 1.

[0044] The slurry in the invention is in the state of solution and colloidal solution, has low viscosity, good diffusivity, and a diffusion radius of 0.8-2.5m, enabling the slurry to spread evenly under low pressure. Calcium chloride and sodium silicate in the slurry, under the action of inorganic salt additives, undergo a chemical reaction to produce calcium silicate with high bonding capacity, and after forming calcium silicate cementitious material, the strength of silt and fine sand can be as high as 0.5~ 3.5MP...

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PUM

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Abstract

The invention discloses side slope grouting slurry for silty-fine sand embankment widening, prepared from the following raw material in parts by weight: 3-15 parts of water glass, 2-10 parts of acetic acid, 1-5 parts of calcium chloride, 0.2-3 parts of disodium hydrogen phosphate, 0.1-5 parts of ferric trichloride, 0.1-5 parts of aluminum chloride, and 0.1-3 parts of phosphoric acid or sulfuric acid. The side slope grouting slurry for silty-fine sand embankment widening has the advantages as follows: (1) the slurry provided by the invention is good in permeability, large in dispersion radius after grouting, high in grouting reinforcement strength and good in homogeneity, and the gelation time of the slurry in the air and the sand layer is long; (2) the rest materials of the raw materials apart from the acetic acid which is an organic matter are all inorganic matters, and all of the raw materials do not belong to the range of hazardous article control, and may not cause pollution on the surrounding environment in the use process; the by-products of the slurry after solidification reaction also has no pollution on the environment, and is environment-friendly and harmless; and (3) the raw materials are low in price and wide in source.

Description

technical field [0001] The invention relates to a side slope grouting slurry for widening fine sand embankments and a preparation method thereof, which is suitable for the technical field of widening fine sand embankments. Background technique [0002] With the development of social economy and the increase of highway traffic flow, highway widening and expansion has become one of the important directions of modern transportation development. In road expansion, it is often encountered that the silty sand subgrade surrounded by cohesive soil on both sides is widened. In order to ensure that the subgrade and pavement have good engineering characteristics after widening, the method of excavating the steps after clearing the cohesive soil on the old road side slope is generally adopted. Make the old and new subgrades effectively connected. However, due to the small cohesive force of silt and fine sand, the steps after excavation cannot stand on their own and are easy to collapse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26
Inventor 杨广庆刘立申高民欢陈君朝郑凤曲张仲帆
Owner SHIJIAZHUANG TIEDAO UNIV
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