AN EXAMINATION OF ECONOMICAL MIX-PROPORTIONS AND THE PHYSICAL PROPERTIES ON CELLULAR CONCRETE WITH LOW WATER CEMENT RATIO

This paper examines mix-proportions and the physical properties on the preformed cellular concrete with water cement ratio of 0.26 to 0.30. Using response surface methodology, we investigated mix-proportions that yield target compressive strengths ranging from 9 to 36 MPa and target densities ranging from 1.27 to 1.71 g/cm3 at minimal cost. Tests of cellular concrete with reference to the mix-proportions revealed that the static elastic modulus was lower than estimated, accelerated carbonation was different from that of normal concrete, and drying shrinkage was smaller than that of conventional cellular concrete but still larger than that of normal concrete.