Chapter
May 22, 2014
Impact Roller Compaction of Dry Sand in Laboratory Tests
Authors: Zhong-qing Chen [email protected], Chao Xu [email protected], Guan-bao Ye [email protected], and Chao Shen [email protected]Author Affiliations
Publication: Ground Improvement and Geosynthetics
Abstract
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.
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© 2014 American Society of Civil Engineers.
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Published online: May 22, 2014
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School of Civil Engineering, Shaoxing University, Shaoxing, Zhejiang 312000, China. E-mail: [email protected]
Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China. E-mail: [email protected]
Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China. E-mail: [email protected]
Shanghai Geotechnical Investigations & Design Institute Co. Ltd., Shanghai 200032, China. E-mail: [email protected]
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