US Patent 9440883 Spall-resistant cementitious material

Disclosed is a cementitious product, the product comprising a liquid medium, a hydraulic binding agent, a latex polymer and optionally one or more other components, wherein the direct tensile strength of the product as determined by ASTM C307 is at least 120% of a predicted direct tensile strength of the product per an equation selected from the group consisting of f′dt=0.06*f′c, f′dt=0.07*f′c, f′dt=0.08*f′c and f′dt=0.11*f′c, and wherein the the flexural strength of the product as determined by ASTM C348 is at least 150% of a predicted flexural strength of the product per an equation selected from the group consisting of f′r=0.1*f′c, f′r=0.17*f′c, f′r=9.5*((f′c)^0.5) and f′r=7.5*((f′c)^0.5).