CRL Kwixset Expanding Cement 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 it pours into place smoothly. Setting time is within 15 to 20 minutes and when fully cured, this expanding cement develops compression strengths in excess of 8000 pounds per square inch. Kwixset is not affected by standing water, making it the right cement for exterior use. Kwixset also has many interior applications and can be used either to set railings, brackets, and other fixtures because it will not shrink, crack or dry out. Kwikset can be used in temperatures as low as 40F.