【摘要】 采用分形理论,研究了6种不同粒度分布的粉煤灰与相同粒度分布的硅酸盐水泥所组成的粉煤灰-硅酸盐混合水泥粒度分布的分形维数及其与比表面积、砂浆抗压强度的关系,以观察粉煤灰的物理作用。结果表明,随着粉煤灰粒度分布的变化,粉煤灰-硅酸盐混合水泥粒度分布分形维数和比表面积、砂浆抗压强度之间呈良好的线性正相关;粉煤灰粒度分布分形维数对砂浆后期强度的影响明显大于其对早期强度的影响。更多还原

【Abstract】 The particle size distributional fractal dimensions of six types of fly ash-portland blended cements,which prepared by mixing various particle size distributional fly ash but identical particle size distributional Portland cements,were analyzed by the fractal theory.Results indicated that,the relationships between particle size distributional fractal dimensions of blended cements and specific surface areas,as well as between particle size distributional fractal dimensions of blended cements and compressive strengths of mortars,were positive linear.In addition,the particle size distributional fractal dimension of fly ash had much more significant effect on later strengths of mortars than the early strengths.更多还原