Effect of polyurethane on the stability of sand–clay mixtures

被引：2
|
作者：
Jin Liu
Bin Shi
Kai Gu
Hongtao Jiang
Hilary I. Inyang
机构：
[1] Nanjing University,School of Earth Sciences and Engineering
[2] Hohai University,School of Earth Sciences and Engineering
[3] Nanjing University,School of Geographic and Oceanographic Sciences
[4] University of North Carolina,Department of Civil Engineering
来源：
Bulletin of Engineering Geology and the Environment | 2012年 / 71卷
关键词：
Soil stabilization; Polyurethane; Soil erosion; Soil mixture; Strength; Stabilisation des sols; Polyuréthane; Erosion des sols; Mélanges de sols; Résistance;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Three types of polyurethane were synthesized from mixtures of toluene diisocyanate, polyethylene glycol and polypropylene glycol for use in soil stabilization to improve the erosion resistance. The three polyurethanes were tested at different aqueous concentrations and sand:clay mixtures at weight ratios of 1:1, 1:3 and 1:5. The results of the rainfall simulation, unconfined compression and direct shear tests showed that the polyurethanes improve both strength and erosion resistance significantly. The observed improvement in soil erosion resistance is attributable to the physico-chemical interaction of the long-chain macro-molecules of polyurethane with the clay fraction of the soil.
引用
收藏
页码：537 / 544
页数：7
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