WANG Yuli, WANG Weidong, ZHOU Mingkai, et al. Determination Analysis of Content of Aggregate Micro Fines of Middle and Low Compressive Strength Manufactured Fine Aggregate Concrete[J]. Journal of Civil and Environmental Engineering, 2012, 34(5): 154-158.
WANG Yuli, WANG Weidong, ZHOU Mingkai, et al. Determination Analysis of Content of Aggregate Micro Fines of Middle and Low Compressive Strength Manufactured Fine Aggregate Concrete[J]. Journal of Civil and Environmental Engineering, 2012, 34(5): 154-158. DOI: 10.3969/j.issn.1674-4764.2012.05.025.
There are some controversies on influences of stone powder on performances of concrete
and its content determination is one of the hot issues of manufactured fine aggregate (MFA) concrete. Slump and compressive strength of limestone MFA concrete were analyzed on contents of stone powder for middle-low strength and different flowability concrete. The experiment results show that there are different optimums percent of stone powder of MFA
such as 5
10
and 20 for different types of concrete
but the water-powder ratio for them is 0.4. It is concluded that optimum percent of stone powder may be predicted by water-powder 0.4 for middle and low strength MFA concrete.