On May 2, the ASTM announced that its composite materials ... In other words, a better representation of the performance of FRP reinforcement bar. If this reads as if written in circles, Concrete ...

concrete reinforcement bars marked with a W can be considered as dual grade. Changes to ASTM A615-20 specification reduced the tensile strength requirements for A615 Grades 60 and 80 to 80,000 psi ...