寒区冬季施工养生条件对桥梁用混凝土力学性能的影响

Study on the effect of curing condition on the mechanical properties of bridge concrete in cold region

通过对冬季桥梁用混凝土试验研究,比较不同养护温度、湿度组合对桥梁用混凝土力学性能的影响。得出不同的养护温度和相对湿度组合对冬季桥梁用混凝土抗压强度的影响规律。实验结果表明,养护温度升温速度过快时混凝土表面的水分会大量蒸发使混凝土后期强度发展缓慢。高温养护期混凝土保持充分湿度十分必要。

Based on the tests, comparison is made on the different curing temperature and humidity on the mechanical properties of concrete bridges. The results show that： different curing temperature and relative humidity affect the growth of concrete compressive strength, The conclusion shows that the water of the concrete surface is a lot of evaporation in the heating rate. Concrete late strength development is slow. It is necessary for the high temperature curing of concrete to keep enough moisture.