绿色可控低强材料组成与工作性能研究进展

摘要/Abstract

摘要： 可控低强材料(CLSM)作为一种能够自密实填充狭窄空间、便于二次开挖维修、促进固废资源化利用的绿色回填材料,可应用于管廊及台背等回填工程。为提升固废材料在CLSM中的应用水平,科学合理地指导CLSM材料组成设计,明确多因素影响下CLSM工作性能演变规律,本文系统梳理了CLSM固化材料和固化基料选用现状,并总结了固废材料在CLSM中的应用情况,对比评价了CLSM工作性能相关技术指标规范和测试标准,阐明了CLSM流动度、泌水率、凝结时间、干缩等工作性能在不同因素影响下的演变规律。鉴于当前CLSM相关研究已取得显著进展,进一步研究不同应用场景下基于综合性能调控的CLSM组成设计是推广CLSM工程应用亟待攻关的方向。

关键词: 道路工程, 可控低强材料, 固废材料, 材料组成, 工作性能, 性能评价

Abstract: Controlled low strength material (CLSM) is a green backfill material which can self-compacting fill narrow space, facilitate secondary excavation and maintenance, and promote the utilization of solid waste resources. It can be used in pipe gallery backfilling and abutment back filling engineering. In order to improve the application level of solid waste materials in CLSM, scientifically and reasonably guide the composition design of CLSM material, and clarify the evolution law of CLSM working performance under the influence of multiple factors, the selection status of curing materials and curing base materials of CLSM were combed, the application status of solid waste materials in CLSM were summarized, and the relevant technical specifications and test standards related to the working performance of CLSM were compared and evaluated. The evolution law of flowability, bleeding rate, setting time and drying shrinkage of CLSM under the influence of different factors was clarified. In view of the remarkable progress made in the current CLSM-related research, the further research on CLSM composition design based on comprehensive performance regulation under different application scenarios is an urgent direction to promote CLSM engineering application.

Key words: road engineering, controlled low strength material, solid waste material, material composition, working performance, performance evaluation

中图分类号:

U414

王新岐, 邵捷, 问鹏辉, 曾伟, 王朝辉. 绿色可控低强材料组成与工作性能研究进展[J]. 硅酸盐通报, 2023, 42(7): 2629-2644.

WANG Xinqi, SHAO Jie, WEN Penghui, ZENG Wei, WANG Chaohui. Research Progress on Composition and Working Performance of Green Controlled Low Strength Material[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(7): 2629-2644.

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