Abstract
In this paper, the early age creep under autogenous shrinkage condition of 100 N/mm3 class highstrength concrete was investigated. According to the experimental studies, 1) The relationship of compressive strength and tensile strength, compressive young's modulus, tensile young's modulus were analyed. And mechanical properties of early age concrete were evaluated by compressive strength development. 2) Specific creep both compression type and tensile type can evaluated to the limit of 40% of stress-strength ratio. And elastic strain for early age concrete was very importance. 3) Specific creep strain was evaluated simply exponential function. And tensile creep was proportional to compressive creep.
