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The invention of reinforced concrete
Mark Miodownik learns how reinforced concrete was invented in 1853 by a plasterer from Newcastle called W. B. Wilkinson. Wilkinson inserted straightened steel barrel hoops into wet concrete to resist the tensile forces that cause concrete to crack under load. Mark explains that concrete and steel expand at the same rate when heated which is critical to its many applications. The properties of concrete and steel complement each other. First broadcast in the Learning Zone on BBC2 in May 2012 as part of the programme Materials: How They Work.
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