Two-component quick-hardening early-strength liquid soil stabilizer and application thereof

A soil curing agent and early strength technology, applied in the field of cement-based building materials, can solve problems such as hidden dangers of construction quality, long construction period, and long time for strength, and achieve the effect of shortening the construction period

Active Publication Date: 2021-01-01
CNBM ZHONGYAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The construction of solidified soil mainly adopts the method of in-situ mixing and mechanical compaction. However, in-situ mixing and mechanical compaction are often limited by the construction site, and there are certain limitations. When the body shape is complex and there are multiple narrow and independent backfill sections on the construction surface, the in-situ mixing is limited by the construction. Due to the lack of fluidity of the mixed soil and the narrow operating space, large and medium-sized compaction machines cannot be used, and only manual Compaction, resulting in insufficient backfill density, so fluidized or semi-fluidized solidified soil is required
The existing fluid-type solidified soil achieves high fluidity by adding more dispersed components and increasing the water-to-soil ratio (0.35-0.5). Therefore, the impact is that the setting time of the solidified soil becomes longer and the strength is increased for a long time. At least 12 hours before the next construction operation can be carried out
[0005] It can be seen that the existing soil curing agents still have the problems of low early strength, long construction period, and low fluidity. During the construction process, a large number of manual operations are required, such as paving, vibrating, etc., although some soil curing agents shorten the curing time. time, but there is still the problem of poor fluidity. In order to achieve good fluidity, part of the solidified soil mixture is added with a large amount of dispersant, such as polycarboxylate superplasticizer, but the solidified soil mixture still has poor fluidity retention and is easy to Segregation and bleeding, resulting in hidden dangers in construction quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Curing agent A component: 2-methyl-2,4-pentanediol 4%, sodium lignosulfonate 10%, triethanolamine 6%, diethylene glycol 5%, sulfonated oil 5%, chlorine Calcium 10%, polyoxypropylene polycarboxylate graft copolymer 5%, water 55%;

[0035] Curing agent B component: 8% aluminum hydroxide, 7% aluminum sulfate, 20% sodium hydroxide, 5% organic silicon waterproofing agent, 60% water. After testing, the initial fluidity of the solidified soil mixture is 540mm, showing a high fluidity state, no manual paving is required during the construction process, the setting and hardening time: 1.5h, and the hardening strength after 6h is 0.76MPa.

Embodiment 2

[0037] Curing agent A component: 1,6-hexanediol 5%, sodium lignosulfonate 10%, triisopropanolamine 5%, glycerin 5%, sulfonated oil 6%, calcium chloride 6%, polyoxygen Propylene polycarboxylate graft copolymer 8%, water 55%;

[0038] Curing agent B component: 5% aluminum hydroxide, 6% aluminum sulfate, 17% sodium hydroxide, 4% silicone waterproofing agent, 68% water.

[0039] After testing, the initial fluidity of the solidified soil mixture is 530mm, showing a high fluidity state, no manual paving is required during the construction process, the setting and hardening time: 2.0h, and the hardening strength after 6h is 0.71MPa.

Embodiment 3

[0041] Curing agent A component: 2-dimethyl-1,3-propanediol 4%, sodium lignosulfonate 12%, diethanolamine 6%, neopentyl glycol 5%, sulfonated oil 5%, calcium chloride 9 %, polyoxypropylene polycarboxylate graft copolymer 9%, water 50%;

[0042] Curing agent B component: 7% aluminum hydroxide, 8% aluminum sulfate, 20% sodium hydroxide, 4% silicone waterproofing agent, 21% water.

[0043] After testing, the initial fluidity of the solidified soil mixture is 560mm, showing a high fluidity state, no manual paving is required during the construction process, the setting and hardening time: 1.5h, and the hardening strength after 6h is 0.78MPa.

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PUM

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Abstract

A prepared two-component quick-hardening early-strength liquid soil stabilizer is suitable for premixed flow-state solidified soil construction and comprises a curing agent component A and a curing agent component B. The curing agent component B is a liquid quick-hardening early-strength auxiliary agent, has a coagulation-promoting early-strength excitation effect and is used for preparing quick-hardening early-strength solidified soil. The stabilizer has the advantages of short setting time, high early strength, good fluidity, no need of whole-course paving, strong adaptability to foundationsoil and the like.

Description

technical field [0001] The invention relates to the technical field of cement-based building materials, in particular to a two-component rapid-hardening and early-strength type liquid soil curing agent, a rapid-hardening and early-strength type pre-mixed fluid-state solidified soil prepared by using the same and a construction method thereof. Background technique [0002] Soil stabilizer refers to materials that improve the engineering performance of the foundation soil through physical or chemical reactions with the foundation soil, water, and air after being mixed into the foundation soil. There are many kinds of materials used for soil reinforcement, which can be divided into powder solidification materials and liquid solidification materials in terms of appearance, and can be divided into inorganic solidification materials, organic solidification materials, biological solidification materials and composite solidification materials in terms of material composition. Materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B28/04C04B28/10C04B103/14C04B103/12
CPCC04B40/0039C04B28/04C04B28/10C04B2111/0075C04B2111/00724C04B2111/00663C04B2201/05C04B2103/14C04B2103/12C04B24/026C04B24/18C04B24/122C04B24/16C04B22/124C04B24/2605C04B24/023C04B22/06C04B22/148C04B22/062C04B24/42C04B24/02C04B14/361
Inventor 武斌李婷国金珠王健朱玉雪单立福闫超强马伟男
Owner CNBM ZHONGYAN TECH
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