陶瓷再生混凝土力学性能及微观结构分析

兰州理工大学学报 ›› 2020, Vol. 46 ›› Issue (3): 122-126.

陶瓷再生混凝土力学性能及微观结构分析

乔宏霞^1,2, 彭宽¹, 陈克凡¹, 李江川¹, 洪芬¹

1.兰州理工大学甘肃省土木工程防灾减灾重点实验室, 甘肃兰州 730050;
2.兰州理工大学西部土木工程防灾减灾教育部工程研究中心, 甘肃兰州 730050

收稿日期:2019-04-03 出版日期:2020-06-28 发布日期:2020-08-19
作者简介:乔宏霞(1977-),女,山西应县人,博士,教授,博导.
基金资助:
国家自然科学基金(51468039)

Analysis of mechanical properties and microstructure of recycled ceramic concrete

QIANO Hong-xia^1,2, PENG Kuan¹, CHEN Ke-fan¹, LI Jiang-chuan¹, HONG Fen¹

1. The Key Laboratory of Civil Engineering and Disaster Prevention and Disaster Prevention and Disaster Reduction in Gansu Province, Lanzhou Univ. of Tech., Lanzhou 730050;
2. Western Center of Disater Mitigation in Civil Engineering of Ministry of Education, Lanzhou Univ. of Tech., Lanzhou 730050

Received:2019-04-03 Online:2020-06-28 Published:2020-08-19

摘要/Abstract

摘要： 为了提高陶瓷的再生利用率,将陶瓷颗粒与陶瓷粉作为再生混凝土骨料与掺合料进行再生利用.设计了不同试验方案,对比分析了由复掺陶瓷颗粒、陶瓷粉构成的再生混凝土与单掺陶瓷粉构成的再生混凝土的力学性能.利用SEM以及X荧光分析方法,研究了不同方案下混凝土微观结构的变化规律,并依据微观性能,揭示了再生混凝土强度变化机理.研究表明:随着陶瓷颗粒掺量的增大,再生混凝土的抗压强度逐渐提高;陶瓷粉的掺入能显著提高再生混凝土内部水化反应速率,但混凝土的强度有所降低.

关键词: 陶瓷再生混凝土, 力学性能, 微观分析, 水化反应, X荧光

Abstract: In order to improve the recycling efficiency of ceramics, ceramic particles and ceramic powders are recycled and utilized as recycled concrete aggregate and doped concrete aggregate. Different test schemes are designed, and mechanical properties of recycled concrete which is composed of both ceramic particles and ceramic powders are compared with those of recycled concrete which is composed of ceramic powders only, and then analyzed. Using SEM and X-ray fluorescence analysis, the emerging regularity associated with the concrete microstructure in the case of different schemes has been studied, and the strength varying mechanism of the recycled concrete is revealed in terms of microscopic characterization for the recycled concrete. Our research shows that: with increase of ceramic particle doping, compressive strength of the recycled concrete is gradually increased; the ceramic particle doping can significantly improve hydration reaction rate of the recycled concrete,but the strength of the concrete decreases as a result.

Key words: ceramic recycled concrete, mechanical properties, microscopic analysis, hydration reaction, X fluorescence

中图分类号:

TU502
TU528

乔宏霞, 彭宽, 陈克凡, 李江川, 洪芬. 陶瓷再生混凝土力学性能及微观结构分析[J]. 兰州理工大学学报, 2020, 46(3): 122-126.

QIANO Hong-xia, PENG Kuan, CHEN Ke-fan, LI Jiang-chuan, HONG Fen. Analysis of mechanical properties and microstructure of recycled ceramic concrete[J]. Journal of Lanzhou University of Technology, 2020, 46(3): 122-126.

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