Performance Evaluation Methods of Controlled Low-Strength Materials (CLSM)

Abstract

Abstract: Controlled low-strength material (CLSM) is a new filling material with high flowability, controllable and low strength, which is widely used in engineering backfills, pavement bases, conduit bedding and other projects. At present, there is no performance test method and standards for CLSM in China and it mainly draws lessons from the relevant evaluation methods of foreign standards and materials such as concrete and mortar, and it is urgent to formulate a reasonable, unified and systematic performance test method to standardize and promote the large-scale popularization and application of CLSM. This paper summarized the existing test methods of CLSM in terms of workability, mechanical properties, environmental impact and durability, and made a comparative analysis from the aspects of test principle, experimental parameters, advantages and disadvantages, so as to provide a basis for the performance test of CLSM and a reference for the formulation and perfection of CLSM standard system in China.

Key words: filling material, controlled low-strength material, performance test method, test principle, experimental parameter, test standard

CLC Number:

X705

WANG Wei, ZHANG Tongsheng, CHEN Canfeng, WU Zhengde, WEI Jiangxiong, YU Qijun. Performance Evaluation Methods of Controlled Low-Strength Materials (CLSM)[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(11): 3634-3643.

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