Re:Graphene may have found its killer app
by lebski88 on Friday May 20, 2022 @04:12AM
(#31444648)
I'm not an expert but is that true? Road bridges are commonly concrete. In this application they use tensioned steel inside the concrete to help with the tension and other forces.
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Yeah exactly. The steel resists the tensile forces and the concrete resists the compressive forces.
Concrete is very weak in tension. That's why it's basically never used without steel reinforcement. I think increasing the tensile strength is mainly useful to prevent cracking which looks bad and can allow water to get to the steel.