Rockite R0CK50 50 Lbs. Expanding Cement

CRL Rockite? is a gray, hydraulic type cement that expands as it sets, and is specially formulated to produce unexcelled strength and bonding qualities. When mixed with water Rockite? pours into place smoothly, sets within 15 to 20 minutes, and when fully cured develops compression strengths in excess of 8000 pounds per square inch. Rockite? is great for any interior application. Use it to set railings, brackets, and other fixtures because it will not shrink, crack or dry out. COMPRESSION STRENGTHS: 1 Hour: 4,600 psi 24 Hours: 5,000 psi 7 Days: 8,000 psi