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Additive for raising foundation soil strength and anti-frost heaving

A technology of soil strength and additives, applied in the direction of soil conditioning materials, applications, organic fertilizers, etc., can solve problems such as time-consuming and complicated processes

Inactive Publication Date: 2006-12-20
COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these methods are complicated in technology and time-consuming in implementation.

Method used

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  • Additive for raising foundation soil strength and anti-frost heaving

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] An additive for improving foundation soil strength and anti-frost heaving is prepared from the following raw materials in percentage by weight: 1% NaCl, 2% gelatin, 12% polyvinyl alcohol, and the balance is water.

Embodiment 2

[0017] An additive for improving foundation soil strength and frost heaving resistance, prepared from the following raw materials in weight percentage: Ca(Cl) 2 0.5%, gelatin 1%, polyvinyl alcohol 18%, and the balance is water.

Embodiment 3

[0019] An additive for improving foundation soil strength and anti-frost heaving is prepared from the following raw materials in percentage by weight: 1.5% NaCl, 3.5% gelatin, 7% polyvinyl alcohol, and the balance is water.

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Abstract

The present invention relates to an additive for raising foundation soil strength and resisting frost upheaval, and said additive is formed from brine, gelatine, polyvinyl alcohol and water.

Description

technical field [0001] The invention relates to an additive for foundation soil improvement. Background technique [0002] During the construction of infrastructure in the western development, the existence of permafrost and the occurrence of frost damage will restrict the development of large-scale engineering and construction in permafrost areas to varying degrees, and bring many difficulties to design and construction. Frost damage also causes severe damage to engineering buildings in cold regions, causing huge economic losses, so the prevention and control of freeze damage is very important. The main cause of frost damage is the generation of frost heaving and melting subsidence of soil. [0003] Influencing factors of frost heave: 1. Internal cause, which is the soil itself, including soil quality, composition and content of pore water, and compactness of the soil, etc.; 2. External cause, which is the external environment, mainly temperature and external water source....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40
Inventor 邓友生马巍何平
Owner COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE