The last study described that the shorter the period of standard curing, the smaller the development of static modulus of elasticity, even though the same compressive strength of high-strength concrete was obtained. Furthermore, the tendency was changed by sorts of cements under the standard curing. In this study, the static modulus of elasticity of high-strength concrete concerning core specimen from imitated concrete column and simple adiabatic curing specimen were investigated. In case standard curing specimen and adiabatic curing specimen were tested at the age of 13 weeks, the calculated value of static modulus of elasticity according to the New RC formula was almost the same as that of test result. However, in case core specimen from imitated concrete column was tested at the age of 13 weeks, the calculated value was smaller than the test result. Therefore, it is considered that the calculated value can be made more accurate when coefficients of cements, ages and specimens are added to the New RC formula.
