Title: Experimental studies of the interfacial shear mechanical behaviour of geosynthetics-soil

Authors: Guangqing Yang; Zheng Zuo; Linying Xu; Zhijie Wang; He Wang

Addresses: School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China; State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China ' School of Traffic and Transportation, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China; State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China ' CCCC Railway Consultants Group Company Limited, Beijing 100088, China ' School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China; State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China ' School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China; State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China

Abstract: At present, limited researches had been performed on comparison of shear mechanical behaviour between geogrid or geocell and soil. In current research, direct shear tests (DST) were performed on the geogrid and geocell to investigate the impact of the friction characteristics and differences of the geogrid and geocell. Results showed that the geogrid and geocell can improve interfacial shear strength characteristics. The reinforcement effect of the geocell was better than that of geogrid, especially under higher vertical stress. The performance of geocell with 260 mm in distance of junctions was better than that of the 440 mm. The performance of geocell with 150 mm in strip height was better than that of the 100 mm. Additionally, in current studies, the contribution of geocell height to the soil strength was greater than the junction distance. The experimental results may provide an idea for application of geocell reinforced mass structures.

Keywords: direct shear test; DST; geogrid; geocell; height of geocell strip; distance of junction.

DOI: 10.1504/IJMPT.2022.125507

International Journal of Materials and Product Technology, 2022 Vol.65 No.3, pp.199 - 223

Received: 13 Jul 2020
Accepted: 02 Mar 2021
Published online: 13 Sep 2022 *

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