Behavior of Pretensioned Type II AASHTO Girders Constructed with Self-Consolidating Concrete

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Title: Behavior of Pretensioned Type II AASHTO Girders Constructed with Self-Consolidating Concrete

Author(s): H.R. Hamilton III, T. Labonte, and M.H. Ansley

Publication: Special Publication

Volume: 231

Issue:

Appears on pages(s): 253-270

Keywords: bridge girder; precast; prestressed; self-consolidatingconcrete

Date: 10/1/2005

Abstract:
Self-consolidating concrete (SCC) is a relatively new approach to makingconcrete and is characterized by its high flowability and resistance to aggregatesegregation in the plastic state. SCC has become a popular alternative for commercialprecast elements and is being evaluated for use in precast bridge girders. This paperoutlines structural testing of six precast, pretensioned, AASHTO Type II girders. Threewere constructed using SCC, and three using a conventional mix. The major tasksincluded performing plastic and hardened property tests, constructing SCC beamswithout vibrating, determining the prestress transfer length, monitoring the camber,and finally testing the beams in such a manner as to produce flexure and sheardominated failure modes. Results of the construction and testing are presented.