This picture shows water seeping through a concrete wall. The contractor was making structural upgrades and wanted a repair material to fill the hole and remove the water seepage. US SPEC Hydraulic Cement was the suggested repair material. Hydraulic Cement is a blend of hydraulic cement and proprietary admixtures used for plugging and stopping water or fluid leaks in concrete structures and masonry walls. After mixing to a thick consistency, the material is pressed into the repair. The rapid setting time of 3-5 mins ensures the repairs can be done quickly and the existing water will not affect the fresh repair material.