Injection foam and gels for the repair and rectification of cracked concrete, faulty joints and soil stabilisation; concrete bonding compounds; concrete hardening compounds; products for protecting concrete (chemicals); products for sealing concrete (other than paints and oils); concrete mixtures; substances for improving and stabilising soil; waterproofing compounds (other than paint); waterproofing preparations (chemical); coatings for waterproofing (chemical); cement waterproofing chemicals (other than paint)