Rapid Concrete Resurfacing

ARDEX K 521™ is a self-leveling, pourable topping designed for rapid resurfacing of indoor concrete. It can be applied at a minimum thickness of 3/8″ (9 mm) and up to a maximum thickness of 2″ (5 cm). ARDEX K 521 creates a polished, “aggregate-exposed” finish, with polishing possible as soon as 24 hours after application.

Key Features

• A mixture of Portland cement, hydraulic cements, and specialty aggregates
• Ideal for resurfacing indoor concrete
• Can be walked on in 2 to 3 hours; polishing can begin in as little as 24 hours
• Dual water ratio for versatility
• Suitable for interior floors only

Standards

Tested in accordance with ASTM C1708