Soil solidifier and soil solidification method

Abstract

The invention relates to a soil solidifier and a soil solidification method. The soil solidifier comprises 15 to 30 percent of fly ash, 4 to 15 percent of lime, 10 to 20 percent of sodium silicate, 8 to 20 percent of caustic soda, 5 to 16 percent of gypsum, 10 to 32 percent of common silicate cement, 0.5 to 3.5 percent of fluorite and 0 to 1.5 percent of sodium sulfate. During solidification of soil, the soil solidifier is tight, relatively low in contraction and swelling coefficient and extremely small in solidified soil body contraction amount; deformation and cracks which are caused by expansion with heat and contraction with cold because of temperature change are avoided; therefore, the solidified soil body is high in seepage resistance, freezing resistance and cracking resistance; the problems of low water stability, high dry cracking performance and simplicity in cracking during solidification of the soil by the conventional solidification material are well solved; and the solidified soil body has a relatively good heat isolation function. The soil solidification method is easy to construct, time-saving and labor-saving; the solidifier cannot be influenced by the temperature; the solidification time is short; the working efficiency is high; the working period can be greatly shortened; and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a soil curing agent and a soil curing method. Background technique [0002] Soil solidification is actually physical and chemical treatment of the soil with external admixtures to change the composition of the soil and the engineering properties of the soil, so as to achieve the purpose of improving soil strength and soil compaction. The fly ash soil curing agent is mainly composed of fly ash, which is a hydraulic cementitious material prepared from a variety of inorganic and organic materials after reasonable matching. It belongs to a new type of building material and can be directly cemented at room temperature. Soil particles may be able to react with clay minerals to form gelling substances. [0003] At the beginning of the 20th century, due to the needs of construction of roads and ports, some economically developed countries used lime and cement to improve the so...

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Problems solved by technology

[0003]At the beginning of the 20th century, some economically developed countries used lime and cement to improve the soil due to the construction of roads, ports and other projects, and achieved good results in the initial stage of construction. However, in the long-term soil stabilization project, people have gradually realized that the simple use of traditional lime, cement and other soil stabilization materials has obvious shortcomings and cannot meet the development needs of engineering construction.

[0005]①The compressive strength does not meet the industry standard

Soil stabilizers currently used in road construction can only make up for the strength by increasing the amount of mixing

[0006]②Expensive

[0007]③ Water resistance is not good enough

The water stability of the soil curing agent that has been constructed is not enough, especially the water agent, which cannot consolidate the foundation soil after soaking in rainwater for a long time

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