![]() Strength (MPa) – 17MPa 7 days, 28MPa 28 days.Concrete Slab Crack Control Joints TECHNICAL DATA ![]() MATERIALS CEMIX NO STEEL CONCRETE mix consists of a uniformly blended, properly proportioned mixture of stone, gravel, sand, cement, fibres and other admixtures approved for use in concrete to improve workability and performance of the product. For commercial heavy-duty slabs please follow the engineers design guidelines. Note: Fibers in this mix will resist cracking and thus not prevent cracking caused by overloading the slab with weight or due to movement in the substrate. Use CEMIX CONCRETE CURE WB to cure concrete, or just keep the surface damp for the first 7 days. Level off the corners and finish flat with a wooden float for coarse finish or a steel trowel for a smooth finish. Site, work sufficiently to remove air voids if any and compact well with a tamping rod working into all areas.
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