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造壳混凝土是一种新的搅拌工艺,其主要是利用分次投料方法。目前我国在试验方面有十多种不同投料程序,在工艺理论研究方面,普遍认为分次投料搅拌工艺的增强效果对于先拌净浆法或先拌砂浆法来说是对水泥粒子的分散作用;而对裹砂石法,则主要是改变集料与本体相之间界面的物理结构,改变混凝土内部结构的孔径分布。现在国内混凝土分次投料搅拌工艺在提高强度、节约水泥及其它性能方面
Shelling concrete is a new stirring process, which mainly uses fractional feeding methods. At present, there are more than a dozen different feeding procedures for experiments in China. In terms of process theory, it is generally believed that the enhancement effect of batch feeding mixing process is to disperse the cement particles for the first mixing pulp method or the mixed mortar method first; For the sand-enclosing method, the physical structure of the interface between the aggregate and the bulk phase is mainly changed, and the pore size distribution of the internal structure of the concrete is changed. Currently, the domestic concrete batching and stirring process improves strength and saves cement and other properties.