关键词: 水泥;粒度分布;粉煤灰;矿渣;纳米颗粒

Abstract: The effects of particle size distribution on the cement properties of fly ash , slag and nanometer materials with gelation activity are introduced , including the optimization of grain size distribution range , the particle size distribution model and the mechanism of mineral admixtures .Fineness is very important for strength development , particularly in the early stages of hydration .At present , most of the close-packing model is Fuller distribution , which can improve the microstructure of cement pastes . The approach can optimize distribution interval and improve overall performance by arranging a high activity cementitious particle , cement particle , and a low activity particle are arranged in fine , middle and coarse fractions, respectively.Finally, through the summary and analysis of research results at home and abroad , the further study of the particle size characteristics of gel composition is prospected .

Key words: cement;particle size distribution;fly ash;slag power;nano-particles