������������������������������This paper presents the results of experimental studies on the strength characteristics of concrete. Strength development of concrete is influenced by the types of cements and the curing temperature. Therefore, in this research, it is found that the temperature range for temperature compensated specified strength T of JASS 5 is proper, and the time for formwork to remain in place is proposed according to the types of cements. As for Young's modulus, correction factor for the types of cements should be considered to the AIJ expression of it.

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concrete was srnal］ er than the same water −cement rati 。 of ordinary cement concrete 、 Influence ofcuring tcmperature was the largest at thc age or 7 days， while at the age of 28 da ｝ ・ s ， it was 旺 ot co 面 rmed ． Furthermor¢ ， this paper proposes new standards frorn the abQvc results ， An additiun taking into account the disorepanc ｝ ・ between the strength o 負 he concrete in tho structure and the strength of speoimens ( ∠］ F ) ， temperature compensated specified streng 出 T ， and time f［〕r 童 brmwQrk to remain in place ．

In this research studied on the effects of moisture curing for concrete in structures from regarding considered management technique for moisture curing period. As the results, strength development of concrete was confirmed enough too when moisture curing terminated early age. Furthermore, water-cement ratio has an influence than the moisture curing period for carbonation resistance. Moreover, this relation was linearly, and water-cement ratios which were required from carbonation standard values are satisfied water-cement range that corresponding with durability design strength. Accordingly, durability for carbonation is considered to have enough resistance in spite of moisture curing period if concrete proportion is designed to consider the durability design strength.

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