Bond 25 is a rapid curing heavy duty concrete repair product designed to repair and renew cracks and spalls on commercial, retail and industrial concrete floors, repair damaged control joints, fill anchor bolt holes and repair defects on garage floors before coating. It is traffic ready in +/-25 minutes. Most contractors prefer to use Bond 45 for grout coating. Bond 25 is a nice middle of the road repair product to use as it gives plenty of time for mixing and placing but still cures very fast on the back end. It is great to use either in cartridge form or bulk due to these characteristics.