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Reinforcing agent for soil ruins skin layer in humid environment and reinforcement method thereof

A technology for wet environment and earth ruins, which is applied in the field of reinforcing agent for the surface layer of earth ruins in wet environment. It can solve the problems of unsatisfactory reinforcement effect of wet soil layer, difficult penetration of polymer materials, weak reinforcement of small molecule siloxane, etc. , to achieve the effect of good surface hydrophobicity, good weather resistance and increased compressive strength

Inactive Publication Date: 2006-08-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, commonly used reinforcement materials for earthen ruins, such as potassium silicate solution, acrylic resin, organic silicon resin or small molecule siloxane, etc., have unsatisfactory reinforcement effects on wet soil layers.
The reasons are swelling caused by water soaking, reverse osmosis and shrinkage caused by solvent volatilization, difficult penetration of polymer materials, and weak reinforcement of small molecule siloxane, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Mix 18g of hydroxyl-terminated silicone oil with n being 8-12, 12g of ethyl orthosilicate, 0.003g of di-n-butyltin dilaurate, and 70g of ethyl acetate, and mix them uniformly to form a soil layer consolidating agent. Cover the absorbent cotton yarn on the dense clay soil layer with a moisture content of 15%, and then slowly drip the reinforcing agent until the absorbent cotton yarn is saturated, cover the plastic film to keep moisture, and add it every 2 to 4 hours on the first day For the reinforcing agent, remove the plastic film and absorbent cotton yarn after two days of penetration, maintain for 4 weeks, and measure the reinforcing effect. Results: The penetration depth of the reinforcement agent is greater than 4cm, the compressive strength of the soil layer increases by 1.2 times, the water vapor transmission rate remains basically unchanged, the soil layer does not absorb water and has good hydrophobicity, the surface soil block does not disintegrate after being ...

Embodiment 2

[0041]Same as Example 1, just change ethyl orthosilicate into methyltriethoxysilane, dimethyldiethoxysilane, trimethylethoxysilane, dimethyldiethoxysilane and three The equal amount of mixture of methyl ethoxysilane, the result is that the reinforcement effect is roughly the same as that of Example 1, but the penetration depth of the reinforcement is slightly increased, and the compressive strength is slightly reduced.

Embodiment 3

[0043] With embodiment 1, just change ethyl orthosilicate into the equal mixture of trimethylethoxysilane and ethyl orthosilicate respectively, the equal mixture of dimethyldiethoxysilane and ethyl orthosilicate, As a result, the reinforcement effects are almost the same as those in Example 1, except that the penetration depth of the reinforcement agent is slightly reduced, and the compressive strength is also slightly reduced.

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PUM

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Abstract

The invention discloses a reinforcing agent and method of soil site surface layer on damp condition, adopting organic reinforcing agent which can solidify due to humidity at normal temperature, and this reinforcing agent is mainly composed of end-dihydric short-chain poly diorganic siloxy glue, multifunctional group substituted organic siloxane cross-linking agent and metallic organic catalyst able to make them slowly polymerized, etc. Firstly, making the reinforcing agent permeate the soil layer to perform cross-linked solidification for about 1-2days and maintain for 2-4 weeks, then the reinforced soil layer almost doesn't change its appearance, can enhance compressive strength by twice about, basically doesn't change its water steam permeation ratio and has good surface hydrophobic property, the surface-layer soil blocks can not crack when soaked in the water, and the reinforcing agent has good weatherability. It can better reinforce and protect surface layer of soil site on damp condition of water ratio not greater than 25%.

Description

technical field [0001] The invention relates to a reinforcing agent for the surface layer of an earthen site in a humid environment and a reinforcing method thereof. Background technique [0002] The reinforcement and protection of earthen sites is one of the important technologies for the in-situ preservation and display of large-scale cultural heritage objects and relics. At present, most of the reported results on the protection of earthen sites are aimed at dry soil. It is still a very difficult problem to strengthen and protect earthen sites in humid environment. Soil is the product of long-term weathering of stones, and the soil particles rely on weak cohesion to combine into lumps and make the earthen site exist. The scouring of natural precipitation and the infiltration of groundwater will dissolve the soluble components in the soil, take away the particles, break the bond between soil particles, loosen the soil blocks, and lead to the coll...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/12
Inventor 张秉坚周环
Owner ZHEJIANG UNIV
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