Physical Filling Effect of Aggregate Micro Fines with Different Iithologic Characters
Aggregate micro fines (AMF) may improve performances of concrete if they are used as mineral admixture, but the mechanisms need be studied. By measuring wet packing density of mixtures of AMF and cement with different proportions, their compactness was calculated. The outflow times of mixture pastes were tested by the method of Marsh tone and their variation regular is the same as compactnesss. Thus physical filling effect of AMF as admixture may be explained with effect of AMF on compactness of cement. The results show that the best filling proportions are: limestone powder: 10 percent, quartzite powder: 5 percent and granitic powder: 5 percent. It is important guiding meaning for the determination of mixing proportion for AMF to be used as admixture in concrete.
aggregate micro fines (AMF) admixture physical filling compactness
Y.L. Wang W.D. Wang X.M.Guan
School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo,454003, Henan, Ch School of Materials Science and Engineering, Henan Polytechnic University,Jiaozuo,454003,Henan,China School of Materials Science and Engineering,Henan Polytechnic University,Jiaozuo, 454003, Henan,Chin
国际会议
济南
英文
340-345
2010-05-09（万方平台首次上网日期，不代表论文的发表时间）