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通过对3种不同结合料填充率下不同结构类型的水泥粉煤灰稳定碎石的空隙率、体积分析、图像观测以及材料组成的研究,系统分析了该类材料的结构与组成,并同时与普通混凝土以及多孔混凝土的结构进行了对比。试验结果认为:不同结构的水泥粉煤灰稳定碎石其空隙率在13%～17%之间,远远高于普通水泥混凝土而低于多孔混凝土,且随结合料填充率的增加先减小后增加;不同结构的水泥粉煤灰稳定碎石中粗集料与填充料(结合料与细集料)的体积比例在6∶4到7∶3之间,处于普通水泥混凝土与多孔混凝土之间,且随着结合料填充率的增加而增加;在材料组成上,水泥粉煤灰稳定碎石具有水泥用量少、用水量少、细集料含量少、粗集料含量多、空隙率较大等特征。
The structure and composition of this kind of material were systematically analyzed by studying the porosity, volume analysis, image observation and material composition of cement-flyash stabilized macadam with different types of cement at different filling rates. The structure of normal concrete and porous concrete are compared. The results show that the porosity of cement-fly ash stabilized macadam with different structures is between 13% and 17%, which is much higher than ordinary cement concrete and lower than that of porous concrete, and decreases with the increase of filling rate And then increase; the volume ratio of coarse aggregate to filler (binder and fine aggregate) in different structures of cement fly ash stabilized macadam is between 6: 4 and 7: 3, between normal cement concrete and porous concrete And increases with the filling rate of the binder; on the material composition, the cement fly ash-stabilized macadam has the characteristics of less cement consumption, less water consumption, less fine aggregate content, more coarse aggregate content and void content Larger features.