Once mixed with water, this concrete mix sets within 15 minutes.
Gray Expansion Cement is a popular product in the concrete mix category.5 cu ft per bag and a container size of 50 lbs. The Rockite Expansion Cement is the right choice for your next concrete mix project. Expansion Cement, 50 lb, Pail, 1 Hr Full Cure Time This expansion cement can be used for creating cracks and fissures on your next project.