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《Journal of Changchun University of Technology(Natural Science Edition)》 2014-01
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Study on production of aerated concrete by circulating fluidized bed fly ash

XU Zheng-tan;College of Ecological Environment and Urban Construction,Fujian University of Technology;  
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.
【Fund】: 福建省教育厅A类科技项目(JA05339)
【CateGory Index】: TU528.2
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