ROCKITE is fast setting, and more than twice the strength of fully cured conventional concrete. When mixed with water to pourable consistency it flows and seeps into place as though it were molten lava. It has an initial set with in 15-20 minutes. With in one hour it will develop compression strengths of 31Mpa or 4500 psi. Its adhesion is due to expansion (hydraulic forces against exterior walls of drilled holes etc) and when fully set it grips metal to concrete permanently.