<p>Quikrete 50 lb. Hydraulic Water-Stop Cement blocks running water and seals leaks in cracked masonry and concrete surfaces. It is suitable for above grade and below grade concrete and masonry repairs. Quikrete 50 lb. Hydraulic Water-Stop Cement sets very quickly enabling it to stop active water leaks.</p> <ul><li>Seals leaks and blocks running water in cracked concrete and masonry surfaces</li><br /><li>Suitable for above-grade and below-grade repairs</li><br /><li>Mix golf-ball sized portions</li><br /><li>3-5 minutes set time</li><br /><li>5,500 psi</li></ul>