陶瓷再生混凝土力学性能及微观结构分析

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.

Analysis of mechanical properties and microstructure of recycled ceramic concrete

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.