Sika® WT-215 P

Permeability Reducing Admixture

Sika® WT-215 P is an integral powdered crystalline based permeability reducing admixture (PRA) for use in various watertight concrete applications. Sika® WT-215 P meets the requirements of ASTM C 494 Type S and is NSF/ANSI Standard 61 certified.

Sika® WT-215 P is a plant added crystalline based permeability reducing admixture. Sika® WT-215 P reduces ability of concrete to conduct water flow. Sika® WT-215 P uses unique active chemicals, which react with the moisture within the concrete and with various products of the cement hydration process. As a result of this reaction insoluble crystalline compounds are created throughout the entire capillary system. Over time crystalline formations reduce the size of the capillary pores until they are completely blocked and water flow is stopped.      Use of Sika® WT-215 P in watertight concrete application can result in:
  • Lower construction cost
  • Faster construction process
  • Uniform waterproofing throughout the entire concrete volume
  • Resistance against hydrostatic pressure up to 14 ATM (206 psi)
  • No leakage due to surface damage
  • Ability to seal concrete cracks up to 0.02 in (0.50 mm)
  • Easy application due to unique repulpable bags
  • Meets the requirements of ASTM C 494 Type S
  • NSF/ANSI Standard 61 certified