Roadware's 10 Minute Concrete Mender penetrates deep into cracks and creates a structural repair in just 10 minutes at 70° F. This hybrid polyurethane uses ultra-low-viscosity and surface tension to penetrate concrete faster than water without the excessive solvents associated with many other low-viscosity polymers. The product’s refined materials allow for a viscosity of 8 cps and a surface tension one third that of water. The combination of these two properties creates excellent bond strength, load transfer, and durability. Roadware Inc. 800-522-7623.