Laboratory Study on Soil Modified by Polyurethane Sand-fixing Agents

刘瑾; 施斌; 顾凯; 沈征涛; 卢毅

doi:10.13409/j.cnki.jdpme.2013.01.006

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Laboratory Study on Soil Modified by Polyurethane Sand-fixing Agents

更新时间：2025-12-11

- Laboratory Study on Soil Modified by Polyurethane Sand-fixing Agents
- Vol. 33, Issue 1, Pages: 29-34(2013)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.2013.01.006
  CLC： U411
- Published：2013
- 稿件说明：
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[1]刘瑾,施斌,顾凯,沈征涛,卢毅.聚氨酯型固沙剂改性土室内试验研究[J].防灾减灾工程学报,2013,33(01):29-34.

刘瑾, 施斌, 顾凯, et al. Laboratory Study on Soil Modified by Polyurethane Sand-fixing Agents[J]. 2013, 33(1): 29-34.
[1]刘瑾,施斌,顾凯,沈征涛,卢毅.聚氨酯型固沙剂改性土室内试验研究[J].防灾减灾工程学报,2013,33(01):29-34. DOI： 10.13409/j.cnki.jdpme.2013.01.006.

刘瑾, 施斌, 顾凯, et al. Laboratory Study on Soil Modified by Polyurethane Sand-fixing Agents[J]. 2013, 33(1): 29-34. DOI： 10.13409/j.cnki.jdpme.2013.01.006.

摘要

对自主研发的PUA、PUB和PUC 3种聚氨酯型固沙剂改性土的强度、抗冲刷性、抗风蚀性等性能进行了室内试验研究

并结合聚氨酯分子结构和功能对固沙剂改良原理进行了分析。试验结果表明:3种聚氨酯型固沙剂改性土的无侧限抗压强度、内聚力得到了提高

抗冲刷和抗风蚀性能得到了明显增强;3种固沙剂改性土的无侧限抗压强度和内聚力均随着固沙剂浓度的增加而增大;PUA、PUB和PUC浓度为3g/cm3的改性土试样的冲刷率分别只有4.4%、14.7%和0.6%

而参照样高达79.5%;PUA、PUB和PUC浓度达到1g/cm3以上的改性土风蚀后表面保持完整

没有风蚀破坏痕迹。因此

聚氨酯型固沙剂可以很好地增强土体粘聚力、促进表层固化、减少水土流失

可用于坡面防护、水土保持、防尘固沙、沙漠化治理等领域。

Abstract

In this paper

the series laboratory tests such as strength

anti-erosion resistance and weather resistance of soil modified by polyurethane sand-fixing agents were studied.Combined with the molecular structure and function of polyurethane

the principle of sand fixing agent was analyzed.The results showed that: unconfined compressive strength and cohesion of soil modified by three types of polyurethane sand fixing agents have been improved

anti-erosion and anti-wind erosion have been enhanced.Unconfined compressive strength and cohesion of three kinds of sand-fixing agents modified soil increase with the increase of sand fixing agent concentration.The erosion rate of the modified soil of PUA

PUB and PUC with the concentration 3 g/cm3 are only 4.4%

14.7% respectively

but the control sample is up to 79.5%.The surface of all modified specimens with concentration larger than 1 g/cm3 remains intact after wind erosion.So the polyurethane sand-fixing agents can promote surface curing

reduce soil erosion

and be suitable for slope protection

soil and water conservation

dust fixing

desertification control and other fields.

关键词

Keywords

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