An investigation on the gain of physical properties of concrete with time and experimental results on the development of compressivestrength, splitting tensile trength, modulus of elasticity, and poisson's ratio are reported. The results show that the elastic modulus developed much faster than either the tensile or the compressive strength, which developed at approximately the same rate. Poisson's ratio did not change substantially with either richness of mix or ageof concrete and did not vary appreciably with time after 6 hr. The period within the first 12 hr after casting was observed to be the period of fastest development of physical properties. This paper appears in transportation research record no. 1284, Cement, admixtures, and concrete 1990.
Samenvatting