Concrete Demolition and Rock Breaking has never been easier with Dexpan Expansive Demolition Grout. Dexpan is a powder with amazing 18,000 PSI expansive strength when mixed with water. Poured into drilled holes, Dexpan can break concrete and rocks safely and quietly, while providing SILENT cracking. It is safer, easier and more cost effective. Note 1) Not recommended for concrete slab less than 6" in depth. Note 2) You are getting one 11 Lb. Bucket of Dexpan which fills up to 9 lineal feet (2.5 m) of 1.5 inches (3.8 cm) diameter holes. Note 3) Choose correct type of Dexpan based on rock / concrete temperature. **PLEASE READ CAREFULLY BEFORE USE** **ALWAYS WEAR Safety Goggles, Rubber Gloves, Dust Mask** How to use Dexpan? STEP 1) Drilling: Use 1.5 inches (3.8 cm) drill bit, holes should be drilled 1 ft (30 cm) apart. 80-90% of the depth, DO NOT go through. STEP 2) Mixing: In a bucket, combine 0.4 gallons (1.5 liters) of water with one 11 lb. (5 kg.) bag. Mix well to a slurry. (a drill and paddle is recommended) STEP 3) Filling: *Warning: Use of Dexpan in extreme hot temperatures could cause blowouts. Dexpan slurry should be poured into holes within 10-15 minutes after mixing. Coverage: Normally one 11 lb. (5 kg.) bag can fill up to 9 lineal feet (2.5 meters). STEP 4) Cracking Or Breaking Time: Properly mixed, the cracks may appear after 2-8 hours. Allow 24 hours for best results. **WARNING** IMPORTANT SAFETY PRECAUTIONS and FIRST AID: 1) SAFETY GOGGLES, RUBBER GLOVES and DUST-PROOF MASK is required. 2) **WARNING** BLOWOUTS may occur! DO NOT look directly into filled holes. 3) Do not breathe in dust. Avoid eye and skin contact. If eye or skin contact should occur, rinse it off IMMEDIATELY with plenty of water and consult doctor. 4) Keep Dexpan in DRY storage. Seal box / bag after use. 5) Keep out of reach of children and pets. 6) MSDS (material safety data sheet) is available upon request. * Please leave a Review, we'll send you a FREE Dexpan Hat.