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Soil solidifier and soil solidification method

A technology of soil curing agent and fly ash, which is applied in the field of civil engineering, can solve the problems of not being able to meet the development needs of engineering construction, insufficient water stability of soil curing agent, and compressive strength not reaching industry standards, etc., to shorten the construction period, Good water and moisture resistance, fast setting time

Inactive Publication Date: 2014-11-26
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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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

Method used

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  • Soil solidifier and soil solidification method

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Effect test

Embodiment 19

[0049] Example 19: Maximum Dry Density and Compressive Strength Tests for Soil Stabilizers

[0050] (1) Soil maximum dry density experiment

[0051] 1. according to the preparation method of formula described in embodiment 1 and curing agent, prepare soil curing agent;

[0052] ②Add the weighed curing agent to the soaked soil sample, fully mix it with a stirrer to a uniform state, and place it for 12 hours;

[0053] ③According to the requirements of TO804-94 in JTJ057-94, select the heavy-duty test method, and prepare soil samples according to the water content of 10%, 12%, 14%, 16%, 18%, and 20% respectively; use the instrument to detect the soil of the test piece dry density; and dot plot soil dry density-water content diagram, see figure 1 .

[0054] ④ by figure 1 The optimal soil moisture content can be found under the maximum dry density of soil, and the maximum dry density of soil is 1.80g / cm 3 , the optimal moisture content is 15.5%.

[0055] (2) Compressive str...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/12E02D3/12C09K103/00
Inventor 周振民
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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