HP Concrete High Power Concrete Mix 60lb Bag

Remove all deteriorated concrete, dirt, oil, grease and all bond inhibiting materials from the surface. Be sure repair is not less than 1” in depth. Preparation work should be done by the most efficient mechanical means to obtain a CSP 6 as defined by the International Concrete Repair Institute (ICRI). Saturate surface with clean water, substrate should be saturated, surface dry (SSD) with no standing water. Embedded steel reinforcement should be thoroughly cleaned by mechanical means to remove all traces of rust, revealing a white metal. For priming reinforcing steel use HP Bondit III. HP Concrete Mix should be mixed in rotary drum or other suitable mechanical mixer. Introduce measured amount of water to mixer, no more than 2.5 quarts per 60 lb. bag. Add 3/4 the required water to mechanical mixer. Add HP Concrete Mix to water with mixer turning; add the remaining water as needed, mixing for no more than three minutes to obtain desired consistency. Dump batch and immediately deliver HP Concrete Mix to properly prepared substrate. For 3,000 lb. bags, follow the directions above, adding no more than 31 gallons of clean water. After properly preparing the substrate, force material against the edge of the repair and work toward the center. Fill the repair area entirely, consolidate and screed. Do not layer the material. Follow ACI Guidelines for curing Portland cement concrete. Water cure immediately after finishing. The use of a curing compound meeting ASTM C 309, such as US Cure and Seal, is also recommended where moist curing is not practical. (For thin patches) If material is applied in multiple lifts only apply curing compound on final surface. Applying curing com- pound on primary lifts may inhibit mechanical bond. HP mix should be used when ambient temperatures are 40oF (4oC) and
rising. Lower temperatures produce a slower set; higher temperatures produce a faster set. For temperatures below 40oF (4oC) consult with the manufacturer for special cold weather placement provisions which include but are not limited to conditioning of the materials, use of heated mix water and thermal protection. In hot weather use chilled water for mixing. HP Concrete should not be applied at less than 1” (12.7 mm) thick.