矿渣粉颗粒群参数对矿渣活性和混合水泥性能的影响

Effect of particle group parameters of GGBFS on its activity and blended cement properties

以混合材料的填充效应和微集料效应为基础,测试了不同颗粒分布矿渣粉制备的水泥的物理性能,研究了矿渣粉颗粒群参数对水泥使用性能和混合水泥抗压强度比的影响。结果表明,矿渣粉颗粒分布宽、粗大化有利于混合水泥使用性能的提高;同时,颗粒堆积密度也影响混合水泥抗压强度比的高低,但主要对早期作用明显,而后期的抗压强度比则与矿渣粉的比表面积直接相关。

Based on filling effect and micro-aggregate effect of admixtures, the physical properties of cement prepared by GGBFS with different panicle size distribution were tested, and the effect of slag particle group parameters on cement service performance and compressive strength ratio of blended cement was studied. The result showed that the wide distribution and coarse particle size of GGBFS was helpful to improve cement service performance. At the same time, the accumulation density of panicles influenced the compressive strength ratio of blended cement especially at the early age, while the compressive strength ratio at later age was correlated to specific area of GGBFS.