Wear and abuse resistant floor and flooring underlayment composition

Abstract From the Canadian patent

Abstract of the Disclosure, An improved inorganic cementitious flooring underlayment composition and finished flooring assembly that are more highly resistant to wear and abrasion for use in high traffic usage areas. The flooring underlayment, plus various thicknesses of finished flooring goods, has particular applicability to heavily trafficed residential, commercial and public buildings such as business and governmental office buildings convention centers. hospitals, schools and the like. The improved flooring underlayment composition includes about 10% by weight Portland cement and a major proportion of calcium sulfate hemihvdrate having certain critical particular dispersed …