无砂大孔混凝土配合比设计、成型及养护

Non-fines macroprous concrete mixing ratio design,forming and curing

无砂大孔混凝土与普通混凝土最大的不同为组成材料中无细集料并导致其具有内部孔隙率高、强度低等特点。无砂大孔混凝土从设计到成型,最后到养护有着自身一套方法、方式。针对国内外无砂大孔混凝土设计方法进行了探讨,并就成型及养护方式展开了研究,研究结果表明:无砂大孔混凝土最佳的成型方式为静压法,最佳的养护方式为空气中养护(湿度95%以上,温度(20±2)℃)。

The most different between non-fines macroprous concrete and common concrete is its composing materials without fine aggregate so that it has internal high void ratio and low strength etc.features.Non-fines macroprous concrete has its own a set of method and way from mixing ratio design to forming and curing.This article carried out discussion aimed at home and abroad non-fines macroprous concrete design method as well as expanded research on forming and curing way.The results show that：non-fines macroprous concrete＇s optimal forming way is statics pressure forming.its optimal curing way is curing in air（humidity more than 95%,temperature（20±2）℃.