This document discusses floor hardeners for protecting concrete floors. It describes dry-shake surface hardeners which are sprinkled onto fresh concrete to create an abrasion-resistant topping that is bonded to the concrete slab. Two specific hardeners are highlighted: HARDONATE METALTOP contains metallic aggregates and is very durable, while HARDONATE MINERALTOP uses quartz aggregates for a non-metallic option. Both products are recommended for use in industrial, commercial and heavy traffic applications. Application instructions are provided.