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Silt composite curing agent and silt curing method

A composite curing agent and curing method technology, applied in the field of silt composite curing agent and silt curing, can solve the problems of silt molding, poor strength and water stability, etc., and achieve excellent wear resistance, large water stability coefficient, high intensity effect

Active Publication Date: 2020-04-28
SHANDONG TRANSPORTATION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the problems of silt molding problems, poor strength and water stability, and provides a silt composite curing agent that can greatly improve the curing strength and water stability of silt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The silt was solidified with 20% solid content of SBR latex and ordinary Portland cement as composite curing agent.

[0029] The weight ratio of SBR latex, ordinary portland cement, silt, and water is 10:3:95:4. Among them, the SBR latex is cationic SBR latex produced by Shandong Xianyuan Technology Co., Ltd., with a solid content of 40%, which is diluted with pure water to a solid content of 20% before use.

[0030] Fully mix the dried soil and cement, add water and SBR latex, mix well, and form the test piece according to the 95% compaction degree. The test piece is demoulded smoothly without damage; it is bagged at room temperature for 7 days, Then the unconfined compressive strength test was carried out, and the measured unconfined compressive strength was 1.011MPa, and the water stability coefficient was 0.414.

Embodiment 2

[0032] The raw materials of the curing agent and the molding method of the test piece are the same as those in Example 1, except that the weight ratio of SBR latex, ordinary Portland cement, silt, and added water is 12:3:95:3.

[0033] The specimens were demolded smoothly without damage; they were bagged and preserved at room temperature for 7 days, and then the unconfined compressive strength test was carried out. The measured unconfined compressive strength was 1.167MPa, and the water stability coefficient was 0.451.

Embodiment 3

[0035] The raw materials of the curing agent and the molding method of the test piece are the same as in Example 1, except that the weight ratio of SBR latex, ordinary Portland cement, silt, and added water is 14:3:95:2.

[0036] The specimens were demolded smoothly without damage; they were bagged and preserved at room temperature for 7 days, and then the unconfined compressive strength test was carried out. The measured unconfined compressive strength was 1.029MPa, and the water stability coefficient was 0.630.

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Abstract

The invention discloses a silt composite curing agent and a silt curing method, and belongs to the field of road engineering. The silt composite curing agent is prepared by mixing a polymer emulsion and cement according to a specific ratio. Compared with the prior art, the silt composite curing agent provided by the invention can greatly improve the silt curing strength and water stability, and has very good popularization and application values.

Description

technical field [0001] The invention relates to the field of road engineering, and specifically provides a silt-soil composite curing agent and a silt-soil curing method. Background technique [0002] The eastern part of Henan, the northern part of Anhui, the northern part of Jiangsu, and the southwestern part of Shanxi belong to the Yellow River Flooding Area, and a large amount of Yellow River silt has been deposited in these areas. Silt engineering has special properties. Generally, more than 70% of the grain groups are silt and fine sand. The specific surface area is small, the capillary phenomenon is prominent, and it has pseudoplastic characteristics. Poor, it is very easy to liquefy under the action of dynamic load. Due to its special physical and mechanical properties, the stability of silt in road engineering has always been a difficult problem to solve. [0003] Since the last century, researchers have continued to study the stability of low-liquid-limit sand-bea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/08C04B28/02
CPCC04B28/04C04B28/08C04B28/021C04B2111/00732C04B24/2611C04B14/361Y02W30/91
Inventor 樊亮李永振侯佳林周圣杰梁浩林江涛魏慧姜峰毕飞王林马士杰张岩
Owner SHANDONG TRANSPORTATION INST