With the addition of Sika WT - 240 P, Sika says it's the only manufacturer to offer the two core product technologies in permeability reducing admixtures; hydrophilic crystalline and hydrophobic pore blocking.
Sika WT-240 P is a powdered, plant-added, crystalline-based, permeability-reducing admixture, for use in hydrostatic applications, (PRAH) that reduces the ability of concrete to conduct water flow. It contains moisture-activated compounds that produce insoluble crystalline deposits that form within the capillary system. These crystalline formulations have the ability to reduce the size of capillary pores and prevent water penetration.
Sika WT-240 P and Sika Watertight Concrete Powder, a hydrophobic pore blocking admixture, can be used together to reduce concrete permeability in hydraulic structures to retain water or keep it from infiltrating conditioned spaces.
Use of Sika WT-240 P in watertight concrete applications can result in:
- Up to 85% reductions in permeability per DIN 1048 testing
- Lower construction cost compared to traditional types of membrane waterproofing
- One-step use results in reduced application time and faster construction process
- Uniform waterproofing throughout the entire concrete volume
- Improved resistance against hydrostatic pressure
- Ability to seal concrete cracks up to 0.016 in. (0.40 mm)
- Easy application due to repulpable bags
- Meets the requirements of ASTM C-494 Type S
- NSF/ANSI Standard 61 certified
Additionally, SikaControl WT-240 P Red is also available for use in utility grade applications. SikaControl WT-240 P RED is an integral powdered crystalline based permeability reducing admixture, for use in hydrostatic applications, (PRAH) where traceability of the PRAH product is required. SikaControl WT-240 P RED contains a red color tracer that will give the concrete a red tint making it visibly apparent that the material has been added to the concrete mix. SikaControl WT-240 P RED is NSF/ANSI Standard 61 certified.