1998 Volume 4 Issue 6 Pages 1-6
This study looks at the effect of the ratio between mortar and coase aggregate on the quality of hardened high-fluidity concrete, by varying the unit volume of the latter. The process includes a variation in composition of mortar and coase aggregate during construction, thereby keeping the amount of chemical admixture and fine aggregate constant with respect to the cement volume. Then the properties of hardened concrete were examined, which revealed that if the ratio between mortar and coase aggregate subatantially deviated from the designed mix-propotions, the quality criteia for the high-fluidity concrete as specified in JASS 5 was not met, and therefore it is strongly recommended to opt for a careful construction process that does not vary the components of concrete as above.
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