What are the factors which affect the resistance of a concrete floor to wear?
Wear resistance is linearly proportional to compressive strength within the range of 3,000 to 6,000 psi; at strengths below 2,500 psi wear resistance reduces very rapidly. Aggregates for a wear resistant floor should be tough, hard and dense. Wear resistance increases with time of curing up to a maximum of about 30 days, and with drying up to as long as 40 days. Certain materials, such as magnesium fluosilicate, zinc fluosilicate, sodium silicate, aluminum sulfate and zinc sulfate, as well as a number of proprietary compounds, are also used as floor hardeners.