作　　者： ; ; ; ; ; (杉田修一）;

机构地区： 广西大学化学化工学院

出　　处： 《武汉理工大学学报》 2005年第2期17-20,共4页

摘　　要： 研究了高活性稻壳灰混凝土的强度特性和孔结构 ,结果表明 ,随着混凝土中稻壳灰掺量的增加 ,混凝土的强度明显提高 ,龄期为 7d和 2 8d获得较高的强度提高率。稻壳灰替代水泥掺入混凝土后 ,能明显的改善孔结构 ,孔隙明显细化 ,小于 2 0nm的无害孔明显增多。混凝土中Ca(OH) 2 的减少和孔结构的改善是稻壳灰混凝土强度提高的主要原因。 The strength property and pore distribution of concrete with highly active rice husk ash were studied. The results showed that with the replacement of cement with RHA in concrete, concrete strength increased and the greater of strength increasing ratio is obtained at 7 days or 28 days curing. The pore structure of RHA concrete has ameliorated and the average pore size of concrete especially the portion of pore that greater than 20 nm in radius is reduced. The improvement of strength of RHA concrete mainly attributed to the less Ca(OH) 2 and the ameliorating of pore structure of RHA concrete.

关 键 词： 稻壳灰 混凝土 强度特性 孔结构

领　　域： [建筑科学]