Short Papers on Research in 1967

Abstract

Nearly 200 batches of cellular concrete, foamed, were made of Kansas pozzolans with portland cement and were autoclaved. Volcanic ashes produced concretes having unusually high strength-density ratios. The desirable conditions of making such concretes were broadly determined. The compressive-strength-versus-dry-density relationships of the concretes that satisfied these conditions were about 1500 psi at 40 pcf to 3000 psi at 55 pcf. The moduli of elasticity agreed closely with those given by the 1963 ACI Code formula.