寒区冬季施工对混凝土耐久性的影响研究

A study of the effect of the durability of concrete in cold region

通过对不同养护制度下的寒区冬季施工混凝土氯离子扩散、冻融循环试验,探究养护制度对其耐久性的影响,结果显示出不同的养护温度和相对湿度组合对冬季桥梁用混凝土渗透性能、质量损失率、相对动弹模量的影响。寒区桥梁用混凝土养生,高温高湿的养护条件优于低温低湿和高温干燥的养护条件。

The experimental study on the durability of concrete in the bridge is carried out.The influence of different curing temperature and relative humidity combination concrete of the cold region construction bridges are used durability is obtained.The conclusion shows that,The late strength of concrete is slow when the curing temperature heats up too fast.Because The water on the concrete surface evaporates in large quantities.It is necessary for the high temperature curing of concrete to keep enough moisture.