用400升自落式搅拌机搅拌粉煤灰混合砂浆,一次进料搅拌和分两次进料搅拌的同龄期砂浆强度不同,具体试验结果见表1。从表1可以看出,两次进料的砂浆强度比一次进料提高11%。分两次进料搅拌,就是先将粉煤灰、水泥倒入搅拌机内,搅拌1 The fly ash mixing mortar was stirred with a 400-liter self-dropping mixer. The strength of the same-age mortar was different between the one-time feed agitation and the two-time feed agitation. The specific test results are shown in Table 1. From Table 1, it can be seen that the mortar strength of the two feeds is increased by 11% compared to the one-time feed. When the material is mixed and agitated twice, the fly ash and cement are poured into the mixer first and the mixture is stirred.