文献类型：会议论文

英文题名：Impact roller compaction of dry sand in laboratory tests

作者：Chen, Zhong-Qing[1]; Xu, Chao[2]; Ye, Guan-Bao[2]; Shen, Chao[3]

机构：[1] School of Civil Engineering, Shaoxing University, Shaoxing, Zhejiang 312000, China; [2] Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; [3] Shanghai Geotechnical Investigations and Design Institute Co. Ltd., Shanghai 200032, China

会议论文集：Ground Improvement and Geosynthetics - Selected Papers from the Proceedings of the 2014 GeoShanghai International Congress

会议日期：May 26, 2014 - May 28, 2014

会议地点：Shanghai, China

语种：英文

外文关键词：Geosynthetic materials - Rollers (machine components) - Sand

外文摘要：A laboratory investigation of the influence of different factors - including weight, size and towing speed of impact modules - on the effectiveness of impact roller (IR) compaction was carried out. An impact roller simulation device was developed to do the investigation and air pluviation technique was used to prepare loose, dry, sand specimens. The Chinese cone penetration tests in the position of impact craters in sand specimens with different passes of IR compaction were used to verify the effectiveness of IR compaction. Results of the laboratory tests show that the weight and towing speed of a module significantly affects the effectiveness of IR compaction, but the size of the module has little influence on effectiveness. It is mainly observed that better improvement can be achieved when heavier impact modules are used and towing speeds close to the optimum towing speed are adopted during IR compaction. ? ASCE 2014.