Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Earthquake Engineering and Engineering Vibration》 2013-01
Add to Favorite Get Latest Update

Effect of sea water attack on dynamic behavior of artificially cemented sand in large strain

LI Bo12,ZENG Xiangwu3,WANG Yanru1 (1.The Key Lab of Soft Clay Engineering and Land Reclamation,Wenzhou University,Wenzhou 325000,China; 2.Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering,Guilin University of Technology, Guilin 541004,China;3.Department of Civil Engineering,Case Western Reserve University,Ohio 44106,USA)  
The offshore and the onshore structures are emerging in China.Reliability and durability of these structures are critical for development in ocean economy.The aim of this study is to evaluate the dynamic behavior of cemented sand under seawater attack in long term.The cyclic triaxial apparatus is employed to show the evolution of shear modulus and damping ratio of the cemented sand in terms of soaking period(SP) and cement content(CC).The results show that the cementation process is affected by the seawater to an extent compared to the sample in tap water.The shear modulus in seawater is smaller than that in tap water;while the damping ratio increases significantly as the soaking period increases and is higher than that in tap water.Also,the crystallization of salts could be clearly observed,which probably explains the evolution of dynamic behavior of cemented sand.The undrained cyclic triaxial tests show the liquefaction resistance has been enhanced with the increasing of soaking periods.Finally,it is concluded that merely slight cementation for sand can significantly improve the dynamic behavior of the ground.
【Fund】: 国家自然科学青年基金项目(41202816);; 浙江省自然科学青年基金项目(LQ12E08007);浙江省自然科学青年基金项目(LQ12E08006);; 广西岩土力学与工程重点实验室资助课题(11-KF-08)
【CateGory Index】: TU435
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved