粗骨料表面经黏弹性处理后的混凝土阻尼比

Damping Ratio of Concrete after Its Coarse Aggregate Surface Is Treated by Viscoelastic Materials

通过对粗骨料表面进行黏弹性处理来放大界面效应,从材料角度研究小变形情况下粗骨料界面与混凝土阻尼比之间的关系.为了消除粗骨料表面积大小对混凝土阻尼比的影响,制备了总表面积为一定值的粗骨料,配制成长方体阻尼试件,采用悬挂自由振动法测定了粗骨料表面黏弹性处理前后的混凝土阻尼比变化.

The concrete interface effect was enhanced by treating coarse aggregate surface with viscoelastic materials. The relationship between the characteristic of coarse aggregate surface and the concrete damping was studied from the material point of view. In order to eliminate the impact of surface area of coarse aggregate, coarse aggregate with specified surface area was prepared and used. Cuboid damping specimens were prepared, hanging specimen and free vibration method were applied to measure damping ratio changes after coarse aggregate surface was treated with viscoelastic materials.