钢渣-矿渣透水混凝土力学性能的试验研究

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (5): 1767-1777.

所属专题：资源综合利用

钢渣-矿渣透水混凝土力学性能的试验研究

陈尚鸿, 林佳福, 杨政险, 张勇, 熊晓立

福州大学土木工程学院先进土木工程材料福建省高校研究中心,福州 350108

收稿日期:2022-12-14 修订日期:2023-02-22 出版日期:2023-05-15 发布日期:2023-06-01
通信作者: 杨政险,博士,教授。E-mail:zxyang@fzu.edu.cn
作者简介:陈尚鸿(1981—),男,博士,副教授。主要从事固废综合利用及其在工程应用中的研究。E-mail:chenshanghong@fzu.edu.cn
基金资助:
福州市科技局科技创新平台项目(2021-P-031);福建省海洋经济发展专项资金项目(FJHJF-L-2022-19);国家自然科学基金(51978171)

Experimental Study on Mechanical Properties of Steel Slag-Slag Pervious Concrete

CHEN Shanghong, LIN Jiafu, YANG Zhengxian, ZHANG Yong, XIONG Xiaoli

Fujian Provincial University Research Center for Advanced Civil Engineering Materials, College of Civil Engineering, Fuzhou University, Fuzhou 350108, China

Received:2022-12-14 Revised:2023-02-22 Online:2023-05-15 Published:2023-06-01

摘要/Abstract

摘要： 采用钢渣矿渣复合粉替代硅酸盐水泥,钢渣骨料替代天然骨料制备碱激发钢渣-矿渣透水混凝土(ASSPC),研究不同因素下ASSPC抗压强度的变化规律,结合XRD、TG、FESEM和SEM-EDS表征ASSPC硬化胶凝材料和界面过渡区(ITZ)的微观性能,阐明胶凝材料对ASSPC力学性能发展的作用及影响机理。结果表明,ASSPC具备较高的早期抗压强度,随矿渣-钢渣掺比提高,ASSPC的抗压强度先上升后下降。采用钢渣作为骨料制备透水混凝土,可有效优化ITZ的微观性能,改善ASSPC的力学性能。随着水胶比(0.24~0.32)提高,ASSPC的抗压强度先增大后减小。

关键词: 透水混凝土, 碱激发钢渣-矿渣胶凝材料, 钢渣骨料, 界面过渡区, 力学性能, 流动性

Abstract: Alkali-activated steel slag-slag pervious concrete (ASSPC) was prepared by using steel slag-slag composite powder instead of Portland cement and steel slag aggregate instead of natural aggregate. The compressive strength of ASSPC under different factors was studied, and the microscopic properties of hardened cementitious materials and interfacial transition zone (ITZ) of ASSPC were characterized by XRD, TG, FESEM and SEM-EDS. The effects of cementitious materials on the development of mechanical properties of ASSPC and its influence mechanism were clarified. The results show that ASSPC has high early compressive strength. With the increase of steel slag-slag ratio, the compressive strength increases first and then decreases. Using steel slag as aggregate to prepare pervious concrete effectively optimizes the microscopic properties of ITZ and improves the mechanical properties of ASSPC. With the increase of water-binder ratio (0.24～0.32), the compressive strength of ASSPC increases first and then decreases.

Key words: pervious concrete, alkali-activated steel slag-slag cementitious material, steel slag aggregate, interfacial transition zone, mechanical property, flowability

中图分类号:

TU528

陈尚鸿, 林佳福, 杨政险, 张勇, 熊晓立. 钢渣-矿渣透水混凝土力学性能的试验研究[J]. 硅酸盐通报, 2023, 42(5): 1767-1777.

CHEN Shanghong, LIN Jiafu, YANG Zhengxian, ZHANG Yong, XIONG Xiaoli. Experimental Study on Mechanical Properties of Steel Slag-Slag Pervious Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(5): 1767-1777.

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钢渣-矿渣透水混凝土力学性能的试验研究

Experimental Study on Mechanical Properties of Steel Slag-Slag Pervious Concrete

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