干旱区生态环境知识资源中心(Arid): 聚氨酯型固沙剂改性土室内试验研究

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	聚氨酯型固沙剂改性土室内试验研究
其他题名	Laboratory Study on Soil Modified by Polyurethane Sand-fixing Agents
	刘瑾 1; 施斌 2; 顾凯 2; 沈征涛 2; 卢毅 2
来源期刊	防灾减灾工程学报
ISSN	1672-2132
出版年	2013
卷号	33 期号:1 页码:29-34
中文摘要	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/cm~3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/cm~3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。
英文摘要	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 antiwind 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 3g/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 1g/cm~3 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.
中文关键词	聚氨酯型固沙剂 ; 改性土 ; 室内试验研究
英文关键词	polyurethane sand-fixing agents modified soil laboratory tests
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MECHANICS
WOS研究方向	Mechanics
CSCD记录号	CSCD:4792691
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229447
作者单位	1.河海大学地球科学与工程学院, 南京, 江苏 210098, 中国; 2.南京大学地球科学与工程学院, 南京, 江苏 210093, 中国
推荐引用方式 GB/T 7714	刘瑾,施斌,顾凯,等. 聚氨酯型固沙剂改性土室内试验研究[J],2013,33(1):29-34.
APA	刘瑾,施斌,顾凯,沈征涛,&卢毅.(2013).聚氨酯型固沙剂改性土室内试验研究.防灾减灾工程学报,33(1),29-34.
MLA	刘瑾,et al."聚氨酯型固沙剂改性土室内试验研究".防灾减灾工程学报 33.1(2013):29-34.