R.W. Sidley, American Concrete put NRMCA Green-Star on Buckeye, Hawkeye maps

Sources: R.W. Sidley Inc., Painesville, Ohio; American Concrete Corp., Des Moines; National Ready Mixed Concrete Association, Silver Spring, Md.

R.W. Sidley will mark Ohio’s first NRMCA Green-Star ready mixed concrete plant certification with an early-August flag-raising at its North Canton property. The producer’s display of the green & white flag follows the same rite at American Concrete, which in late May announced the first NRMCA Green-Star certified plant in Iowa. American has brought eight other properties under Green-Star certification, and plans program audits for its remaining 12 ready mixed sites by the end of 2012.

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Stay-in-place girder forms net MaineDOT world record for composite vehicular bridges

Source: Harbor Technologies, Brunswick, Me.

Harbor Technologies’ hybrid composite beams (HCB), consisting of fiber reinforced polymer forms bearing ready mixed concrete and conventional steel rebar placed on site, support the new two-lane, 540-ft. Knickerbocker Bridge in Boothbay, Me. With a 4-ft. vertical clearance and tidal water proximity, the Back River crossing has 33-in.-deep HCB box beams set on seven pile bents across six 70-ft. interior and 60-ft. end spans.

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