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Effective highway bridge design in terms of strength, service, and economy can be made using prestressed concrete including post-tensioned (PT) construction.1-2 Bonded PT bridge designs incorporate high strength steel strand within tendon ducts and encapsulated with cementitious grout.3-4 The grout provides a protective barrier layer for the steel by preventing direct exposure to the external environment as well as facilitating the natural development of a thin passive oxide layer on the steel surface in presence of the high grout pore water pH.
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