Use of Clayish Crushed Stone for Production of Aerated Concrete
Use of Clayish Crushed Stone for Production of Aerated Concrete
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DOI：
10.4028/www.scientific.net/kem.302-303.269
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发表时间：
2005-12
期刊：
影响因子：
--
通讯作者：
You-zhi Chen;F. Li;Bingqian Xu
中科院分区：
文献类型：
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作者：
You-zhi Chen;F. Li;Bingqian Xu
加气混凝土是一种新型建筑材料。在中国笔下，粘土碎石被视为固体废物处理。本文报道了用粘土碎石生产B05、B06级加气混凝土的试验研究结果。研究了水热合成反应、配合比、发气性及其对混凝土性能的影响。为材料设计提出了合理的配合比和一些重要的技术参数。采用X射线衍射仪和扫描电子显微镜对粘土碎石加气混凝土的微观结构进行了分析。结果表明，粘土加气混凝土的水化产物由结晶度较差的C-S-H(B)、叶片状和针状托贝莫来石以及少量颗粒状水石榴石组成。在掺入少量粘土的加气混凝土中，经过水热反应后得到了均匀致密的微观结构。
Aerated concrete is a new type of building materials. Clayish crushed stones are regarded as solid waste disposals in China. This paper reports the research outcomes of an experimental study on using clayish crushed stone for the production of aerated concretes of B05 and B06 grade. Hydro-thermal synthesis reaction, mixing proportions, gas-forming and their influences on the concrete performance are investigated. Proper mixing proportions and some important technical parameters are proposed for material design. The microstructure of aerated concrete made with clayish crush stone is analyzed by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results indicate that the hydration products of clayish aerated concrete are composed of poor crystallized C-S-H (B), blade- and needle-shaped Tobermorite and a small amount of granular Hydrogarnet. A homogeneous and densified microstructure was obtained in the aerated concretes with negligible amount of clay after the hydro-thermal reaction in the mixture.