Determination Analysis of Content of Aggregate Micro Fines of Middle and Low Compressive Strength Manufactured Fine Aggregate Concrete
WANG Yuli,WANG Weidong,ZHOU Mingkai,LI Beixing and LIU Suxia
DOI:10.3969/j.issn.1674-4764.2012.05.025
Received ,Revised , Accepted , Available online July 01, 2015
Volume ,2012,Pages 154-158
- Abstract
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.