Abstract
This paper discusses two physical properties, namely, compressive strength and modulus of elasticity of high-performance concrete made with four types of concrete mixes exposed to temperatures within the range 20°C to 50°C under three types of curing methods. The results showed that the compressive strength of concrete incorporating mineral admixtures practically reached above 100 MPa from the age of 7 days. The highest levels of strength and modulus of elasticity were produced by silica fume (SF) concrete under water and wrapped curing at temperature of 35°C. This indicates that the high pozzolanic reactivity and microfiller effect of SF at medium temperature has modified the open channels at the transition zone in SF concrete. The medium temperature environment associated with proper curing has played an important role in the hydration process that produced the hardened concrete with higher strength and elasticity.
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