Weld-Crete bonds new concrete, stucco, tile setting beds and terrazzo to any structurally sound surface, interior or exterior. Use Weld-Crete"s open time to your advantage in bonding to concrete shear walls when you need a time lapse between application of bonding agent, placement of reinforcement steel, placement of formwork and placement of concrete.Highlights:-Interior/exterior.Size : quart. Concrete bonding agent.Bonds new concrete, stucco, tile setting beds and terrazzo to any structurally sound surface.Also used for bonding setting beds for ceramic tile, bonding portland cement plaster and stucco mixes, and to bond to surfaces such as brick, block, tile, marble, metal, glass block, soundly adhered paint and silicone.Incorporates polyvinyl acetate homopolymer in a patented formulation.Can be painted on in a single application 1 hour to 10 days prior to concrete placement.Astm c-932 tensile bond strength.Astm c-78 flexural bond strength.Astm c-1042 shear bond strength.Astm c-109 temperature range.Covers approximately 200 to 300 sq. ft. per gallon depending on method of application, temperatures, porosity and texture of the substrate.Blue and non-bleeding.