Soil stabilizer capable of improving drying shrinkage performance of compacted soil and preparation method thereof

Abstract

The invention discloses a soil stabilizer capable of improving the drying shrinkage performance of compacted soil and a preparation method of the soil stabilizer. The soil stabilizer is prepared fromthe following raw materials (in percentage by mass): 30%-40% of hydroxysuccinic acid, 15%-20% of triethanolamine ester, 12%-18% of water-soluble hemicellulose, 10%-20% of water-soluble starch and 20%-40% of water. The soil stabilizer of the invention have the following beneficial effects that: (1) the formula of the soil stabilizer is reasonable and scientific in collocation, the properties of soil can be changed, so the effects of solidifying and hardening the soil and reducing the shrinkage of the soil in the hardening process are achieved, dry shrinkage resistance is excellent, and the soilstabilizer is an ideal soil stabilizer for projects such as highway subgrades or subbases; and (2) the soil stabilizer provided by the invention is mainly applied to reinforcement soil of highway subgrades or subbases and other projects, can also be used for soil reinforcement of water conservancy projects, airport projects and the like, and has a wide application range.

Description

technical field [0001] The invention relates to a soil curing agent and a preparation method thereof, in particular to a soil curing agent capable of improving the drying shrinkage performance of reinforced soil and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] During the construction of highway engineering, the roadbed is usually treated with inorganic binders such as lime and cement to stabilize the soil. However, there are certain problems in the application of lime and cement to stabilize soil in actual engineering, specifically: [0003] (1) The strength development of lime-stabilized materials is relatively slow, and the early strength is low, which affects the construction progress; [0004] (2) The early strength of cement-stabilized materials is relatively high, but the dry shrinkage of cement is relatively large, and it is easy to crack; [0005] (3) With the substantial increase in the volume ...

AI Technical Summary

Problems solved by technology

[0003] (1) The strength development of lime-stabilized materials is relatively slow, and the early strength is low, which affects the construction progress;

[0004] (2) The early strength of cement-stabilized materials is relatively high, but the dry shrinkage of cement is relatively large, and it is easy to crack;

[0005] (3) With the substantial increase in the volume of highway construction in our country, only using inorganic binders such as lime and cement will lead to material shortages and environmental pollution problems will become increasingly prominent

[0012] However, the anti-drying shrinkage properties of the above-mentioned soil curing agents are still not ideal, and the problem of shrinkage cracks caused by the inherent shrinkage characteristics of stabilized soils that are easy to crack and lead to reflective cracks in asphalt concrete surfaces has not been solved.

That is to say, the existing soil curing agent still cannot meet the requirements of modern road construction, which limits its popularization and application in road engineering.

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