干旱区生态环境知识资源中心(Arid): 荒漠极干旱区板块状盐渍土微结构变化对其强度特性的影响分析

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	荒漠极干旱区板块状盐渍土微结构变化对其强度特性的影响分析
其他题名	Effect of microstructural changes of plate-like saline soil on its strength in extremely arid desert area
	冯忠居 1; 成超 1; 王廷武 2; 刘小飞 3
来源期刊	岩土工程学报
ISSN	1000-4548
出版年	2011
卷号	33 期号:7 页码:1142-1145
中文摘要	荒漠极干旱区板块状盐渍土异于常规散状盐渍土,为揭示板块状盐渍土微结构变化对强度特性的影响,试验研究板块状盐渍土的成分、微结构和无侧限抗压强度特性,分析板块状盐渍土微结构变化对强度的影响规律,结果表明:板块状盐渍土氯盐和硫酸盐含量大于8%,有的甚至超过了60%,且以氯盐为主;矿物成份主要含石灰石、石英、钠长石、斜绿石、伊利石和高岭石为主。由砂、NaCl、Na2SO4胶结而成的板块状结构致密,但由于易溶盐含量和胶结情况的不同,微结构变化导致其无侧限抗压强度有很大的差异;板块状盐渍土具有岩石的强度特征,其值根据结构特征而变化,范围为3.8～20.2 MPa。研究成果为正确认识板块状盐渍土成因及工程特性提供了新的研究思路,为进一步研究板块状盐渍土及其应用处治技术奠定基础。
英文摘要	The plate-like saline soil in extremely arid desert area is different from that of conventional bulk.To find out the effects of the microstructural changes of the plate-like saline soil on its strength,the composition,microstructure and properties of unconfined compressive strength of the plate-like saline soil are studied,and the effects of microstructural changes of the plate-like saline soil on its strength are analyzed.The results show that the plate-like saline soil is mainly composed of chloride,and the content of chloride,and sulfate in the plate-like saline soil is more than 8%,some even exceeds 60%.The main mineral components are limestone,quartz,albite,ramps pyrochlore,illite and kaolinite.The plate-like structure cemented by sand,NaCl and Na2SO4 is in dense situation.Because of the difference of soluble salt content and cement,the differences of properties of unconfined compressive strength caused by microstructural changes are great.The plate-like saline soil has the characteristics of the rock in strength,and its value varies from 3.8 MPa to 20.2 MPa according to its structural characteristics.It can be defined as rock salt based on its salt component and mineral characteristics.The results provide a new basis for a better understanding of the formation of the plate-like saline soil and its engineering properties.This study also lays the foundation for the treatment technology of the plate-like saline soil in engineering.
中文关键词	岩土工程 ; 板块状盐渍土 ; 微观结构 ; 无侧限抗压强度
英文关键词	geotechnical engineering plate-like saline soil microstructure analysis unconfined compressive strength
语种	中文
国家	中国
收录类别	CSCD
WOS类目	CONSTRUCTION BUILDING TECHNOLOGY
WOS研究方向	Construction & Building Technology
CSCD记录号	CSCD:4260998
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227303
作者单位	1.长安大学, 西安, 陕西 710064, 中国; 2.新疆自治区交通厅, 乌鲁木齐, 新疆 830000, 中国; 3.广东省公路勘察规划设计院有限公司, 广州, 广东 510507, 中国
推荐引用方式 GB/T 7714	冯忠居,成超,王廷武,等. 荒漠极干旱区板块状盐渍土微结构变化对其强度特性的影响分析[J],2011,33(7):1142-1145.
APA	冯忠居,成超,王廷武,&刘小飞.(2011).荒漠极干旱区板块状盐渍土微结构变化对其强度特性的影响分析.岩土工程学报,33(7),1142-1145.
MLA	冯忠居,et al."荒漠极干旱区板块状盐渍土微结构变化对其强度特性的影响分析".岩土工程学报 33.7(2011):1142-1145.