文章基本信息

标题：Experimental Study on At-rest Lateral Earth Pressure Coefficient of Cemented Clay
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作者：Zhiqiang Wu ; Zhengyin Cai ; Kai Xu 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：304
期号：4
页码：1-10
DOI：10.1088/1755-1315/304/4/042014
出版社：IOP Publishing
摘要：The determination of lateral earth pressure is of practical importance and plays an important role in the design of retaining structures. Test results of at-rest lateral stress, coefficient of earth pressure at rest and its change law of an artificially cemented clay were presented in this paper. A K ₀ consolidometer was utilized to measure the at-rest lateral stress and vertical compression of the specimen. The test material was a Lianyungang marine clay and was mixed with a special kind of Portland cement that was designed for ocean engineering. The cement contents were 4, 6, 8, 10 and 12% by weight of dry soil particles and the curing time was 7, 14, 28, 60 and 90 days. The test results indicate that the at-rest lateral stress of cemented clay is different from that of uncemented clay. And at-rest lateral stress decreases rapidly with an increase in cement content and curing time. However, the lateral stress increases sharply when the applied load exceeds the vertical yield stress, which causes a corresponding change in K₀.