A special cement admixture for making high strength concrete has been developed. The basic properties of concrete made with this admixture of 5-10wt% and some water reducing agent were reported in this note. The compressive strengths of about 800kgf/cm2 and 1000kgf/cm2 were achieved at the ages of one day and 28 days, respectively, by steam curing at normal pressure. The flexural strength, tensile strength, elastic modulus, creep, drying shrinkage and frost resistance of the concrete were also determined, and they were found to be superior.
