摘要
通过4种配合比的试验研究了矿物掺合料粉煤灰和矿粉对混凝土孔结构的影响,分析了孔结构的变化.实验表明:随着矿物掺合料的掺量由10%增大到20%,混凝土结构的无害孔和少害孔的数量逐渐增加;含气量均有不同程度的降低;气孔间距系数和气泡平均弦长降低,比表面积不同程度增大,故矿物掺合料一定程度上能改善混凝土的孔结构.
The influence of mineral admixture with fly ash and mineral powder on the pore structure of concrete was studied by 4 kinds of proportioning tests,and the change of pore structure was analyzed. Experiments showed that: with the dosage of mineral admixtures increasing from 10% to 20%,the harmless holes and less pollution holes of concrete structure gradually increased; while the gas content reduced in different degrees; air void spacing factor and mean air void diameter declined; specific surface area enlarged. Thus,it is concluded that to some extent,the mineral admixtures can improve the pore structure of concrete.
出处
《兰州工业学院学报》
2017年第6期28-31,49,共5页
Journal of Lanzhou Institute of Technology
关键词
矿物掺合料
粒径分布
含气量
比表面积
气孔间距系数
气泡平均弦长
mineral admixtures
particle size distribution
air content
the specific surface area
air void spacing factor
mean air void diameter
