PRODUCT USES
CF-621 is designed for interior saw cut/control joints and cracks in concrete slabs on grade. Not recommended for expansion joints or exterior applications. Ideal for most type services in chemical processing plants, pulp and paper mills, sewage and waste treatment facilities, warehouses, fertilizer plants, petroleum refineries, electric generating stations, coal handling operations, marine installations, to name a few.
PRODUCT FEATURES
Up to 100% Elongation.
Good resistance to steel wheel traffic.
Very resilient and tough.
Outstanding water tight bond to concrete.
Helps to prevent erosion of control joint edges.
Self leveling.
Easy to work with, cold applied, no special equipment needed.
Excellent adhesion to concrete.
USDA approved.
TEST DATA
BOND COHESION AFTER WATER IMMERSION: No Failure after 25% total movement
TENSILE STRENGTH: (ASTM D638): 600 psi
ELONGATION (ASTM D638): 80% – 100%
TEAR RESISTANCE: (ASTM D624 73): 30 lb/in.
MINIMUM JOINT DEPTH: 1”
MAXIMUM JOINT WIDTH: 3/4”
ARTIFICATIAL WEATHERING (ASTM G23-75 Type D) 10-15% elastomeric property change after 1,000 hours. (Fed Spec TT-5-00227E)
SHORE A HARDNESS: 70-80
Details
| COLOR | Gray |
|---|---|
| CURE TIME | @ 75°F: Set hard: 8-10 hours; full cure 5-7 days. |
| VOLUME SOLIDS | 100% |
| V.O.C. | 0 GMS/L |
| COVERAGE (Theoretical) | (2 gal. unit) 1/4″ x 1″ = 154 linear feet |
| PACKAGING | 2 gal. units |
| MIXING RATIO | 1:1 by volume. Mix 1 part A base with 1 part B hardener |
| POT LIFE | 20 minutes @ 70°F |
| APPLICATION | Pour, tool, caulking gun |
| APPLICATION TEMPERATURE | 55F° – 120°F |
| THINNING | None |
| CLEAN UP | S-74 or SA-17 |
