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Curing agent for soft soil and application thereof

A technology of curing agent and soft soil, applied in the field of curing agent and hydraulic cementitious materials, can solve problems such as poor reinforcement effect, and achieve the effect of good environmental protection, good water stability and improvement of engineering quality.

Inactive Publication Date: 2011-08-17
武汉谦诚桩工科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reinforcement effect is poor in specific strata such as peaty soil and high-salt stratum, which has caused many engineering accidents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] Embodiment 1: the preparation of soft soil curing agent

[0108] Cement clinker 20%

[0109] Desulfurization gypsum 5%

[0110] Granulated blast furnace slag 70%

[0111] Powder fine sand 5%

[0112] Sodium Hydroxide 0%

[0113] Triethanolamine 0%

[0114] The curing agent prepared according to the above mixing ratio is 15% in dosage, 85% in muddy soft soil (weight ratio), and the water-cement ratio is 0.55:1. After stirring and mixing, the average unconfined The compressive strength is 2.11Mpa, and the 28-day strength is 2.57Mpa.

Embodiment 2

[0115] Embodiment 2: the preparation of soft soil curing agent

[0116] Cement clinker 20%

[0117] Desulfurization gypsum 1%

[0118] Granulated blast furnace slag 70%

[0119] Powder fine sand 8%

[0120] Sodium Hydroxide 0.95%

[0121] Triethanolamine 0.05%

[0122] The curing agent prepared according to the above mixing ratio is 15% in dosage, 85% in muddy soft soil (weight ratio), and the water-cement ratio is 0.55:1. After stirring and mixing, the average unconfined The compressive strength is 2.31Mpa, and the 28-day strength is 3.46Mpa.

Embodiment 3

[0123] Embodiment 3: the preparation of soft soil curing agent

[0124] Cement clinker 15%

[0125] Desulfurization gypsum 5%

[0126] Granulated blast furnace slag 75%

[0127] Powder fine sand 4%

[0128] Sodium Hydroxide 0.95%

[0129] Triethanolamine 0.05%

[0130] The curing agent prepared according to the above mixing ratio is 15% in dosage, 85% in muddy soft soil (weight ratio), and the water-cement ratio is 0.55:1. After stirring and mixing, the average unconfined The compressive strength is 2.51Mpa, and the 28-day strength is 3.37Mpa.

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Abstract

The invention relates to a curing agent for reinforcing and treating a soft soil foundation and application thereof. The curing agent for soft soil contains 10-25% of cement clinker, 65-80% of slag, 4-10% of filling material, 1-10% of expanding agent, 0.2-5% of alkaline excitation agent and 0.02-0.3% of surfactant, wherein the filling material is fine sand or / and coal ash; the expanding agent is gypsum or desulfurization gypsum; the expanding agent is calcined lime or sodium hydroxide; and the surfactant is triethanolamine or calcium lignosulphonate. The curing agent for soft soil can be applied to reinforcing soft soil like cumulosol, high-salinity stratum or the like, and the using amount of the curing agent for soft soil is preferably 8-20% of the weight of a reinforced soil body. The curing agent for soft soil, provided by the invention, only contains a little cement clinker and can enable soil layers with poor cement reinforcing effects, such as cumulosol, high-salinity stratum or the like, to obtain better physical and mechanical performances after the curing agent for soft soil is applied.

Description

technical field [0001] The invention relates to a hydraulic cementitious material and its application, in particular to a curing agent for soft soil foundation reinforcement and treatment and its application, belonging to the field of building materials and building foundations. Background technique [0002] Soft soil solidification technology, such as mixing method, rotary spraying method, etc., is one of the most widely used foundation reinforcement technologies. The curing agent currently used is mainly cement, and the strength of soft clay reinforced by cement is low, which is not environmentally friendly and economical. The poor reinforcement effect in specific strata such as peaty soil and high salinity stratum has caused many engineering accidents. Contents of the invention [0003] One of the objects of the present invention is to provide a curing agent for soft soil foundation treatment, which only contains a small amount of cement clinker, and can make the reinf...

Claims

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Application Information

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IPC IPC(8): C04B28/14E02D3/12
Inventor 郭克诚李斌王相民
Owner 武汉谦诚桩工科技股份有限公司
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