Compressive strength of concrete on different size of aggregate

Abstract

This research is studied the effect of different sizes of aggregate on the compressive strength of concrete which produced from the same location. Twenty standard cubes were tested at each age 1, 3, 7 and 28 days, Portland cement type I is mixed with admixture type F (water reducing and high early strength). The results showed that the concrete which has bigger aggregate has higher compressive strength than smaller aggregate in early age (1 and 3 days) but for later age (7 and 28 days) the smaller aggregate has higher compressive strength than the bigger ones.