Concrete Waterproofing Admixture
Overlay for damaged concrete and asphalt roads, driveways & pavements
Restoration of driveways by overlay topping layers is an effective repair method, offering a wide variety of finishes. There is one basic requirement: the slab beneath must be structurally sound, with a bondable surface. In many cases, it requires the removal of the old concrete driveway slab with its cables, drainage pipes and water mitigation systems. 

Kalmatron® PATCHCRETE is an overlay that does not require replacement of old concrete. Surface preparation is simple - by washing with water or priming with KALMATRON® KF-G to provide regeneration of aged concrete and increase chemical bonding. The PATHCRETE layer thickness starts from just 5/16” or 8 mm.
Courtyard concrete damaged by winter blistering and deicing treatments by salt and sand.
PATCHCRETE pumping with a slump of 3 1/2" or 9 (cm) with pumpability up to 45' or 15 (m).
PATCHCONCRETE placement at 3/4" or 18 (mm) on damaged concrete by screed with vibrator.
PATCHCRETE textured for protection against shear wearing.
Pebble rock stamped PATCHCRETE overlay after 5 years.
Regular concrete with shrinkage cracks.                                      2X difference in drying shrinkage between HP concrete with                PATCHCRETE surface without any shrinkage cracks.
                                                                                                          SILICA FUME (red) and KALMATRON® PATCHCRETE (blue). 
Core specimens of PATCHCRETE show excellence of concrete structure compaction. As a result, PATCHCRETE's corrosion resistance to 15% Sulfuric Acid is 22% higher than that of HPC, which doubles the concrete's durability.  

The cost of PATCHCRETE is about 6 to 10 times lower than the cost of High Performance Concrete with SILICA FUME. 

  • Applicable on crumbled concrete 
  • No shrinkage cracks and no curing is required
  • Immediate bonding, no curling afterward
  • Water and Vapor resistant from both sides
  • High resistance to abrasion and carbonation
  • No toppings and no isolation are required 
PATCHCRETE comes in 50 LB plastic bags for preparation on the job site by mixing with water. Application is simple, requiring a general knowledge of concrete placement jobs. PATCHCRETE is liquid impermeable and corrosion resistant, with wide range of application, including overlay of swimming pools, ponds, oil wells, septic tanks, pavements, driveways, industrial and commercial floors.