Research on Time-varying Behavior and Its Influence Factors of Low Heat Cement Concrete Under Abrasion
JIANG Chunmeng1,2, GONG Jingwei1, JIANG Linhua1,2,*, CHEN Cheng2, TANG Xinjun1
1 College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China 2 College of Mechanics and Materials, Hohai University, Nanjing 211100, China
Abstract: Low heat portland cement is widely employed as the main material in hydraulic concrete, where much attention should be paid to the abrasion performance. In this work, mass loss rate, abrasion resistance, abrasion depth, volume loss, fractal dimension of low heat cement concrete at different wearing periods were determined through underwater method. Accordingly, the time-varying process of abrasion morphology of concrete was analyzed, and the impacts of cement hydration products and C-S-H gel structures on the abrasion resistance of concrete were revealed. The results indicate that the abrasion resistance of low heat cement concrete is better than that of ordinary portland cement concrete for its low content of Ca(OH)2 and highly polymerized C-S-H gel, and decreases with the increase of fly ash content, while is not significantly improved after adding slag powder and silica fume. Abrasion rate of concrete is related to its irregularity of wearing surface, whose fractal dimension increases with the extension of wearing duration, and gradually becomes stable when it increases to about 2.6, which could better characterize the early abrasion degree of concrete.
作者简介: 姜春萌,新疆农业大学水利与土木工程学院讲师、硕士研究生导师。2021年获新疆农业大学博士学位。主要从事水工混凝土耐久性和先进水泥基材料等方面的研究工作。近年来,在混凝土材料耐久性领域发表论文20余篇,包括Construction and Building Materials、Magazine of Concrete Research、Journal of Materials Research and Technology、KSCE Journal of Civil Engineering、《建筑材料学报》和《长江科学院院报》等。
引用本文:
姜春萌, 宫经伟, 蒋林华, 陈成, 唐新军. 冲磨作用下低热水泥混凝土时变行为及其影响因素研究[J]. 材料导报, 2023, 37(16): 21110020-6.
JIANG Chunmeng, GONG Jingwei, JIANG Linhua, CHEN Cheng, TANG Xinjun. Research on Time-varying Behavior and Its Influence Factors of Low Heat Cement Concrete Under Abrasion. Materials Reports, 2023, 37(16): 21110020-6.
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2023, Vol. 37 
