可控低强度材料(CLSM)性能评价方法分析

可控低强度材料(CLSM)是一种高流动性、可控低强的新型充填材料,被广泛应用于工程回填、道路基层、管道垫层等工程。目前,我国尚无CLSM性能测试标准,主要借鉴国外标准与混凝土、砂浆等材料相关评价方法,亟待制定合理、统一、系统的性能测试方法与标准,规范和促进CLSM大规模推广应用。本文综述了现有CLSM相关工作性能、力学性能、环境影响、耐久性等方面的测试方法,从测试原理、实验参数、优缺点等方面进行了对比分析,为CLSM性能测试提供依据,也为我国制定和完善CLSM标准体系提供参考。

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

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.