Abstract
In this paper, the equation describing concrete strength as a function of pore structure is proposed. The equation shows as follows : Fc=KD-a exp (-b P), where P : porosity of hardened cement paste in concrete (Effective Total Pore Volume), D : Medium pore size, K, a and b : constant. To verify the varidity of proposed equation, the following was investigated, (1) experimental conditions of compressive strength and pore structure of concrete, (2) effect of materials, age, curing condition on the relation between compressive strength and porosity, (3) relation between compressive strength, porosity and pore size by using artifical pores. As the results, the estimated strength using this particular equation showed a excellent correlation with the measured strength.
