Experimental study of the modulus of elasticity of concrete at different ambient temperature

摘要

The structural performance of concrete construction and bridges is directly influenced by the strength and the modulus of elasticity of concrete.The modulus of elasticity is an input parameter to the creep compliance important especially in design calculation of large concrete bridges.The development of strength and modulus of elasticity at the early ages depends also on the temperature of the environment during casting and curing of concrete.The effect of ambient temperature on modulus of elasticity is however not assessed by the EN 1992-1-1 [1].The experimental program was focused on determination of static modulus of elasticity and compressive strength cast and cured at ambient temperature +20°C and temperature-5°C at different time.The paper also formulates preliminary design recommendations applicable in practice.