关键词: 高弹性防渗填料, 伸缩缝, 防渗, SK单组分聚脲

Abstract: The expansion joint of tunnel project is a weak point in concrete seepage control. It is easy to form a seepage path which would endanger the safety of structure and seriously affect the operation of project. In this paper, it is presentsed the expansion joint sealing scheme of filling high elastic impervious material combined SK monocomponent polyurea coating after the performance test of the high elastic impervious material. In this manner, the expansion joint leakage problem of tunnel in Luanhe-Tianjin Water Diversion Project is solved completely with obvious effect, worhy reference for similar projects.

Key words: high elastic impervious material, expansion joints, leakage prevention, SK monocomponent polyurea