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Loading and Wetting-induced Settlement of Bridge Approach Embankment Materials in Utah (Jul 2024, MPC-24-534)
Often engineers and maintenance personnel are faced with a serious problem in the maintenance of bridges due to excessive settlement of approach embankments near bridge abutments, causing bumps at the ends of the bridges. These settlements result from loading-induced and sometimes wetting-induced strains...
Calcium Sulfoaluminate Cement Concrete for Prestressed Bridge Girders: Prestressing Losses, Bond, and Strength Behavior (Dec 2019, MPC-19-401)
Calcium sulfoaluminate (CSA) cement was used to cast a prestressed voided deck slab bridge girder. The rapid-set properties of CSA cement allowed the initial concrete strength to reach the required 4300 psi needed in order to cut the prestressing strands 6.5 hours after casting. Prestress losses were...