【摘要】 利用X射线荧光光谱仪、XRD等检测手段对循环流化床粉煤灰进行化学成分定性和定量分析,然后确定配合比:粉煤灰65%,水泥12%,石灰20%,石膏3%。主要研究了在蒸压养护条件下,不同水料比、不同铝粉添加量、不同无机外加剂硫酸钠、氯化钙添加量对加气混凝土砌块容重和强度的影响,研究发现最佳水料比为0.65,最佳铝粉掺量为0.1%,无机外加剂硫酸钠对加气混凝土砌块的容重和强度影响不大,而添加0.25%的氯化钙比无外加剂条件下强度提高了40%,达到4.55MPa,且容重为910kg/m3,随着氯化钙量的增加,强度反而下降。更多还原

【Abstract】 In this article,chemical compositions of circulating fluidized bed fly ash were gualitative and guantitative analyzed by using X-ray fluorescence spectrometry and X-ray diffraction,then confirmed the suitable match ratio:fly ash 65percent,cement 12percent,lime 20percent,gypsum 3percent. Primarily studied on autoclaved condition,the effects of different amounts of water-binder ratio,Al powder addition,inorganic admixture(sodium sulphate,calcium chloride)addition on volume weight and compression strength.The result show that the best water-binder ratio was 0.65,the best Al powder addition was 0.1percent,sodium sulphate was less effect on volume weight and compression strength of aerated concrete,however compare with non-admixture,compression strength raised by 40percent while adding 0.25percent calcium chloride,it reached 4.55 MPa and 910kg/m3,with increasing of addition of calcium chloride,the compression strength of aerated concrete decrease.更多还原