Using Tru Self Leveling
Uses:
Use TRU Self-Leveling for high performance floor topping, underlayment and resurfacing projects. TRU Self-Leveling is ideal for projects that need long flow life and working time while achieving high early strength. TRU Self-Leveling cures to a light off-white color ideal for stained, dyed, or integrally colored floors and decorative embedded aggregate flooring. TRU also grinds and polishes well, making it ideal for polished decorative floors.
Applications:
Use Rapid Set TRU Self Leveling when a high-quality and fast floor topping, resurfacer, or underlayment is required. TRU is ideal for projects that need long flow life and working time while achieving high early strength. TRU cures to a light off-white color ideal for floors that are stained, integrally colored, and decorative embedded aggregate flooring. It also grinds and polishes exceedingly well, making it ideal for polished decorative floors.
TRU is an innovative, high performance floor material with proven success on diverse construction projects.
Technical Data:
Time:Working Time 30 min. (70°F)
Flow Life 15 min. (70°F)
Compressive Strength(ASTM C109):
- 4 hours 3000 psi
- 24 hours 5000 psi
- 28 days 6500 psi
Slant Shear Bond Str. (ASTM C882):
- 7 days 2100 psi
- 28 days 2900 psi
Tensile Strength (ASTM C307):
- 7 days 210 psi
- 28 days 365 psi
Flexural Strength (ASTM C348):
- 24 hours 850 psi
- 28 days 1900 psi
Surface Preparation:
Substrate must be clean, sound, and free of oil, curing compound, dust, mastic and other bond-breakers. Surface should be ICRI CSP 3 - 5. Mechanical methods of surface preparation such as shotblasting are preferred. Acid etching the substrate is not recommended. Surface must be dry, have a minimum temperature of 50°F and be properly primed.
Prime:
Apply Rapid Set Acrylic Primer to the prepared concrete substrate following the product specifications. When placing TRU as a decorative topping, epoxy with sand broadcast to refusal is the preferred method of priming. To use this method, follow the "Prime the Substrate" section in the Technical Bulletin for TRU Floor Polishing.
Mix:
Add one bag of TRU to 4.5 quarts (4.3 liters) of potable water. Mix 3 - 5 minutes until the mixture is smooth and lump free. Avoid mixers that entrap large amounts of air. Mixed TRU should be used within 30 minutes at 70°F. Maintain material temperature above 50°F.
Placing:
Arrange work area to permit continuous placement without cold joints. Pour or pump the TRU onto the prepared and primed substrate with a minimum thickness of 1/8? over the highest point. TRU will flow and level out within its 15-minute flow life. Use a gauge rake, spreader or other tools to coax the material into place as required. Use a porcupine-type roller to remove any entrapped air.
For thicknesses greater than 1.5", extend each 50-lb. bag of TRU with 25 lbs. of clean, dry 3/8" pea gravel. Place the extended material to ½" below desired floor level and then place neat TRU for the final ½" within 24 hours.
Cure:
No wet curing is required under normal conditions at 70°F. If used in exterior applications apply a fine water mist to the newly hardened surface of TRU as soon as it can be done without marring the surface and continue until one hour after final set. Avoid excessively dry, windy, hot or sunny conditions.
Adhesives, thin set or paint can be applied after 6 hours. If used as a topping that will receive traffic, a high-quality sealer or epoxy can be applied per the manufacturer's recommendations after 12 hours.
Yield & Packaging:
TRU is available in 23 kg (50-lb.) polyethylene-lined bags. Yield is 0.45 cf per 50-lb. bag. Coverage is 22 -24 sf at ¼" thickness and 11-12 sf at ½" thickness for flat surfaces.