Originally built in the early 1920’s, the historic Rose Bowl Stadium in Pasadena, CA is undergoing extensive improvements exceeding $20 million. Early in the history of this stadium, the original wooden seats, were used as formwork to cast new reinforced concrete bleachers. As the years have passed, carbonation of the cement paste, compounded by inadequate cover and compaction of the concrete, reduced the corrosion protection around the rebar

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