粉磨工艺对水泥颗粒分布及其混凝土性能的影响

研究了不同粉磨工艺系统磨制水泥的颗粒分布、粉磨电耗、标准稠度用水量、与减水剂相容性及其配制的混凝土强度、耐磨性、抗碳化性能的差异;针对我国混凝土行业的现状,从混凝土性能的角度出发,探讨了现阶段各种水泥粉磨工艺的特点。研究结果表明,水泥粉磨工艺系统的效率越高,水泥的颗粒分布越集中,水泥的标准稠度用水量增大,与减水剂相容性变差,在缺乏良好的掺合料进行颗粒分布校正的前提下,所配制混凝土的强度、耐磨性及抗碳化性能均有所下降。

Effect of grinding technology on cement particle size distribution and concrete performance

Difference of particle size distribution, grinding power consumption, water requirement of normal consistency and compatibility with water reducer of different cement produced by different grinding equipments, and simultaneously the strength, abrasive resistance and carbonization resistance property of concrete with different cement grinding technology were studied. Based on the current situation of concrete industry in China, the characteristics of cement grinding technology were discussed with the view of concrete performance. The results showed that as the efficiency of cement grinding system increased, the range of particle size distribution of cement would be narrower, the water requirement of normal consistency would be higher, and compatibility with water reducer of cement would be worse. In absence of good admixture to the premise of particle size distribution correction, the strength, abrasive resistance and carbonization resistance property of concrete would be worse.