磁化水钢纤维再生混凝土早期强度研究

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (4): 1178-1185.

磁化水钢纤维再生混凝土早期强度研究

丁亚红, 陈冰, 武军, 张向岗, 徐平

河南理工大学土木工程学院,焦作 454000

收稿日期:2020-12-09 修回日期:2021-02-03 出版日期:2021-04-15 发布日期:2021-05-11
通讯作者: 张向岗,博士,教授。E-mail:xgzhang1986@126.com
作者简介:丁亚红(1973—),女,博士,教授。主要从事再生混凝土力学性能和耐久性方面的研究。E-mail:dingyahong@hpu.edu.cn
基金资助:
国家自然科学基金(U1904188)

Early Strength Study on Recycled Aggregate Concrete of Magnetized Water Steel Fiber

DING Yahong, CHEN Bing, WU Jun, ZHANG Xianggang, XU Ping

School of Civil Engineering, Henan University of Technology, Jiaozuo 454000, China

Received:2020-12-09 Revised:2021-02-03 Online:2021-04-15 Published:2021-05-11

摘要/Abstract

摘要： 为研究磁化水和钢纤维对再生混凝土早期强度的影响,以C40强度为基准,研究分析不同磁场强度(0 mT、200 mT、260 mT、320 mT)的磁化水和不同体积掺量的钢纤维(0%、0.6%、1.2%)对再生混凝土立方体早期抗压强度和劈裂抗拉强度的影响,并对其微观结构进行观察分析。试验结果表明:钢纤维能够显著提高再生混凝土早期抗压强度和劈裂抗拉强度;磁化水对于再生混凝土抗压强度和劈裂抗拉强度均有不同程度的提升,其中劈裂抗拉强度增幅较小;在0.6%钢纤维掺量和260 mT磁场强度下再生混凝土早期抗压强度增幅较为明显。

关键词: 再生混凝土, 磁化水, 钢纤维, 磁场强度, 早期强度, 微观结构

Abstract: In order to study the effect of magnetized water and steel fiber on the early strength of recycled aggregate concrete, the effects of magnetized water with different magnetic field strength (0 mT, 200 mT, 260 mT, 320 mT) and steel fiber with different volume content (0%, 0.6%, 1.2%) on the early compressive strength and splitting tensile strength of recycled aggregate concrete cube were investigated and analyzed based on the C40 strength. Experimental results show that steel fiber significantly improves the early compressive strength and splitting tensile strength of recycled aggregate concrete, and magnetized water improves the compressive strength and splitting tensile strength of recycled aggregate concrete to varying degrees. The early compressive strength of recycled aggregate concrete increases obviously under 0.6% steel fiber content and 260 mT magnetic field strength.

Key words: recycled aggregate concrete, magnetized water, steel fiber, magnetic field intensity, early strength, microstructure

中图分类号:

TU528

丁亚红, 陈冰, 武军, 张向岗, 徐平. 磁化水钢纤维再生混凝土早期强度研究[J]. 硅酸盐通报, 2021, 40(4): 1178-1185.

DING Yahong, CHEN Bing, WU Jun, ZHANG Xianggang, XU Ping. Early Strength Study on Recycled Aggregate Concrete of Magnetized Water Steel Fiber[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(4): 1178-1185.

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