CS-235 Rapid Expansion Waterstop Sealant

For concrete joints in: Building Foundations, Slabs, Retaining Walls, Storage Tanks, Precast Duct Banks. and similar Non-Moving, Cold, Construction Joints. Not intended for use in expansion joints or joints that move.

NSF Standard 61 Certified, Safe for Drinking Water Applications

APPLICATION NOTES

  • Always use an appropriate ConSeal Primer Product to avoid displacement of CS-235 during the concrete pouring. It may be necessary to utilize CS-1550, masonry nails, or other mechanical means to hold the sealant in place on vertical surfaces.
  • Place CS-235 Waterstop so that it is no closer than 2” away from the outer surface of poured structure. If a keyway is utilized, place the CS-235 into the bottom of the formed keyway area.

ConSeal CS-235 waterstop is a unique sealing compound designed to expand rapidly when exposed to moisture, making it a self-healing joint material for construction joint applications.

PHYSICAL PROPERTIES

Description Test Method CS-235
Color Black
Specific Gravity ASTM D71 1.35–1.45
Hydrocarbon Content ASTM D4 47% min.
Volatile Matter ASTM D6 1% max
Penetration, cone 77°F (25ºC)
150 gm 5 sec.
ASTM D217 40–50 dmm
Application Temperature Range -10°F to 125°F (-22°C to 52°C)
Service Temperature Range -30°F to 180°F (-34°C to 82°C)

PERFORMANCE CHARACTERISTICS

Description CS-235
Maximum Swelling – Freshwater 250%
Maximum Swelling – Saltwater (3%) 35%
Hydrostatic Pressure Resistance – Standard Precast Concrete Joint 30 psi (2 bars)
Hydrostatic Pressure Resistance – Cast-In-Place Construction Joint: 100 psi (6.8 bars)

IMMERSION TESTING

Deionized Water Exposure Results:

24 Hours: 60% Expansion
2 Hours: 100% Expansion
7 Days: 150% Expansion
14 Days: 175% Expansion
21 Days: 200% Expansion
30 Days: 225% Expansion