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Rapid-hardening microswelling curing agent, cured soil and preparation method therefor

A technology for micro-expansion and solidification of soil, which is applied in the field of rapid-hardening micro-expansion type curing agent, solidification soil and its preparation. It can solve the problems of high cost and increased sand and gravel consumption, and achieve low engineering cost, saving consumption and good construction performance. Effect

Inactive Publication Date: 2019-04-12
JIANGSU NATURE WAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the common inorganic plugging technologies use rapid-hardening cement as the basic component material and then add other inorganic materials to mix with sand and gravel, or pour mortar concrete for plugging construction. Although the plugging speed is fast, not only the cost is high, but also Increased the amount of sand and gravel

Method used

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  • Rapid-hardening microswelling curing agent, cured soil and preparation method therefor
  • Rapid-hardening microswelling curing agent, cured soil and preparation method therefor
  • Rapid-hardening microswelling curing agent, cured soil and preparation method therefor

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A quick-hardening and micro-expansion curing agent, comprising the following composition: 20 parts of ordinary Portland cement; 5 parts of quick-hardening sulphoaluminate cement; 50 parts of mineral powder; 10 parts of gypsum; 5 parts of lime; 0.5-1.0 parts of early strength agent; 0.1-0.2 parts of sodium silicate; 0.1-0.2 parts of sodium metaaluminate; 0.5-0.8 parts of aluminum powder.

Embodiment 2

[0039] A quick-hardening micro-expansive solidified soil, comprising soil and a solidifying agent, the solidifying agent comprising the following composition: 20 parts of ordinary Portland cement; 5 parts of rapid-hardening sulfoaluminate cement; 50 parts of mineral powder; 10 parts of gypsum ; 5 parts of lime; 0.2-0.5 parts of activator; 0.5-1.0 parts of early strength agent; 0.1-0.2 parts of sodium silicate; 0.1-0.2 parts of sodium metaaluminate;

Embodiment 3

[0041] A method for preparing quick-hardening micro-expansive solidified soil, comprising the steps of,

[0042] 1) Prepare a curing agent capable of quickly hardening the soil and producing swelling. The curing agent formula is: 20 parts of ordinary Portland cement; 5 parts of rapid hardening sulfoaluminate cement; 50 parts of mineral powder; 10 parts of gypsum; 5 parts of lime; 0.2-0.5 parts of stimulating agent; 0.5-1.0 parts of early strength agent; 0.1-0.2 parts of sodium silicate; 0.1-0.2 parts of sodium metaaluminate; 0.6-0.8 parts of aluminum powder.

[0043] 2) It is convenient and easy to take soil locally according to the project requirements;

[0044] 3) uniformly mix the above-mentioned prepared soil curing agent with the soil;

[0045] 4) Fill the mixture into the part to be plugged, and form an integral block with high strength after hardening.

[0046] Wherein step 2) take soil on the spot according to engineering requirement, add sodium carbonate or sodium hyd...

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Abstract

The invention discloses rapid-hardening microswelling cured soil and a preparation method. The cured soil is characterized by being prepared through mixing a curing agent of a special formula with soil, wherein the curing agent is prepared from the ingredients: 20 parts of ordinary Portland cement, 5 parts of rapid hardening sulfo-aluminate cement, 50 parts of mineral powder, 10 parts of gypsum, 5parts of lime, 0.2-0.5 part of excitant, 0.5-1.0 part of early strength agent, 0.1-0.2 part of sodium silicate, 0.1-0.2 part of sodium metaaluminate and 0.6-0.8 part of aluminum powder. The preparation method for the cured soil comprises the steps: 1) borrowing soil in situ according to engineering requirements; 2) uniformly mixing the prepared soil curing agent with the soil; and 3) filling a part to be subjected to leakage blockage with the mixture. Results show that the cured soil prepared by using the curing agent is high in early strength, good in leakage blockage effect and excellent inplasticity and adhesive property and has a microswelling property. The consumption of cement is reduced, and aggregates are not used, so that the cost is low, and the environment-friendly performanceis good.

Description

technical field [0001] The invention relates to the technical field of curing agents, in particular to a rapid-setting micro-expansion curing agent, curing soil and a preparation method thereof. Background technique [0002] With the development of society and the increasing demand for engineering construction in various industries, traditional engineering construction materials have been far from meeting the demand, and soil reinforcement technology has emerged as the times require. It is taken from the earth's most economical and widely sourced engineering material - soil, and its physical and mechanical properties can be significantly changed by adding soil curing agents. At present, the most researched on soil stabilization technology is mainly used for soil stabilization and soil stabilization agents with different properties for foundation or backfill materials. A solidified soil with flow properties for trench backfill. The solidified soil studied in the present inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/06
CPCC04B38/02C04B28/065C04B2201/50C04B7/02C04B18/141C04B22/143C04B22/064C04B12/04C04B22/0093C04B22/04C04B24/122C04B24/04C04B14/361
Inventor 钟天雪汪潇张惠敏
Owner JIANGSU NATURE WAY TECH
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