高钙灰-水泥颗粒群匹配与强度关系研究

本文将不同颗粒群分布的高钙灰、水泥按5:5比例混合,制成高钙灰水泥,测其3d、28d胶砂抗折、抗压强度。用激光粒度仪分别检测高钙灰、硅酸盐水泥的颗粒群分布。运用Rosin-Rammler公式对高钙灰、硅酸盐水泥及高钙灰水泥进行拟合。应用Origin软件,以宏观性能指标为z轴,水泥与高钙灰特征粒径之差为x轴,水泥与高钙灰复合胶凝粉体的特征粒径De 为y轴,进行三维区域图分析。给出强度发展趋势与水泥、高钙灰的相对位置以及复合胶凝体系总体细度的相互关系。

Relations Study on Particles Gradation and Strength for High-calcium Fly-ash

The Portland cement and high calcium fly ash samples (shortened form P.C. and HCFA)which have different particle size distributions were mixed in a proportion of 50:50%. The mortar strength of HCFA cement in 3 and 28 days were tested. The particle size distributions of samples were tested by LS-230 and Rosin-Rammler. Origin software is used to make tri-dimension picture, in which macro property was enacted as z axes, the difference between character diameter De of P.C. and HCFA enacted as x axes, De of HCFA - P.C. mixing sample enacted as y axes. The relationship between the development trend of macro property and the difference between De of P.C.and HCFA and De of mixing sample are given. The best particle size distribution matching P.C. and HCFA was given.