Analysis of mechanical properties and microstructure of recycled ceramic concrete

Abstract

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

CLC Number:

TU502
TU528

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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