Basic Mechanical Properties and Stress-Strain Relationship of Soda Residue Calcium Carbide Slag Activated Concrete
GUO Weichao1,2, ZHAO Qingxin1,2,*, QIU Yongxiang2,3, SHI Yuxuan2,3, WANG Shuai2,3
1 State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066000, Hebei, China 2 Hebei Province Engineering Research Center for Harmless Synergistic Treatment and Recycling of Municipal Solid Waste, Yanshan University, Qinhuangdao 066000, Hebei, China 3 Key Laboratory of Green Construction and Intelligent Maintenance for Civil Engineering of Hebei Province, Yanshan University, Qinhuangdao 066000, Hebei, China
Abstract: The large-scale stacking of alkaline industrial solid wastes such as soda residue (SR) and calcium carbide slag (CS) has caused serious environmental pollution problems, which is urgent to expand the channels of resource utilization. A new type of concrete (SCB-based concrete, SCBC) was prepared by using the previously developed SR-CS synergistically activated blast furnace slag-fly ash binder (SCB) instead of cement. Its basic mechanical properties such as compression, tensile and flexural properties, and uniaxial compressive constitutive relationship were studied. The results showed that the early compressive strength of SCBC was slower than that of Portland cement concrete (PCC), which could be improved by appropriate heat curing (60—75 ℃@12 h), and would not have an adverse impact on the later strength. The tension-compression ratio and flexural-compression ratio were 0.102±0.006 and 0.137±0.007, respectively, which were higher than that of PCC with the same grade. SCBC had a shorter elastic rising segment and longer plastic rising segment than PCC under uniaxial compression, and exhibited stronger brittleness after peak stress. The prediction models of standard compressive, axial compressive, split tensile, and flexural strength, as well as the uniaxial compressive stress-strain relationship, were established through statistical regression, which were in good agreement with the experimental values, and laid a theoretical foundation for the mix proportion design, strength prediction and engineering application of SCBC.
通讯作者: *赵庆新,燕山大学建筑工程与力学学院教授、博士研究生导师。1996年哈尔滨建筑大学无机非金属材料专业本科毕业,2007年东南大学材料学专业博士毕业。目前主要从事工业固废资源化利用、混凝土材料与结构耐久性、多组分混凝土徐变机理等方面的研究工作。在Cement and Concrete Research,Construction and Building Materials、《硅酸盐学报》《土木工程学报》等期刊发表论文100余篇,授权发明专利20余项。zhaoqingxin@ysu.edu.cn
作者简介: 郭维超,2013年7月、2022年6月于燕山大学分别获得工学学士学位和博士学位。现为燕山大学建筑工程与力学学院教师,主要从事工业固废建材化应用与性能调控、混凝土材料力学行为与损伤失效机理方面的研究,在Construction and Building Materials、Journal of Building Engineering、《岩土工程学报》等期刊发表学术论文12篇,授权发明专利8项(含国际专利1项)。
引用本文:
郭维超, 赵庆新, 邱永祥, 石雨轩, 王帅. 碱渣-电石渣激发混凝土的基本力学性能与应力-应变关系[J]. 材料导报, 2024, 38(17): 22070247-8.
GUO Weichao, ZHAO Qingxin, QIU Yongxiang, SHI Yuxuan, WANG Shuai. Basic Mechanical Properties and Stress-Strain Relationship of Soda Residue Calcium Carbide Slag Activated Concrete. Materials Reports, 2024, 38(17): 22070247-8.
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2024, Vol. 38 
