摘要
测试不同比表面积下铁尾矿粉的粒度分布,然后计算出铁尾矿粉粒度分布的分形维数,并研究分形维数对铁尾矿粉粒度分布特征值、比表面积、砂浆抗压强度和活性指数的影响。结果表明,随着铁尾矿粉粒度分布的变化,分形维数与比表面积、砂浆抗压强度和活性指数均呈现良好的线性正相关;铁尾矿粉的粒度分布分形维数对砂浆后期抗压强度的影响大于对砂浆早期抗压强度的影响。
The relationship between particle size distribution and specific surface of iron tailings had been investigated, and the fractal dimension of the iron tailing powder had been calculated according to the testing results of the particle size distribution, then the effects of fraetal dimension on the iron tailing powder＇s particle size distribution characteristic value, specific surface area, compressive strength of mortars,and activity index had been analyzed. The results indicated that the fractal dimension has positive linear correlation with the specific surface area, compressive strength of mortars and activity index; and the particle size distributional fractal dimension of iron tailing powder has much more significant effect on the compressive strength at later ages than that at early ages.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2013年第2期26-31,共6页
Journal of Wuhan University of Technology
基金
国家高技术研究发展计划("863"计划)(2012AA062405)
关键词
铁尾矿
粒度分布
分形维数
比表面积
活性指数
iron tailing
particle size distribution
fractal dimension
specific surface area
activity index
