Title: Development of Nonproprietary UHPC Mixtures for Precast Bridge Girders

Author(s): Hyeonki Hong, Amreen Fatima, Anol Mukhopadhyay, Mary Beth D. Hueste, John Mander, Stefan Hurlebaus

Publication: Materials Journal

Volume:

Issue:

Appears on pages(s):

Keywords: durability; fresh properties; hardened properties; high early strength gain; mixture development; nonproprietary; precast; pretensioned girder; ultra-high-performance concrete

DOI: 10.14359/51742043

Date: 7/10/2024

Abstract:
Although ultra-high-performance concrete (UHPC) is one of the promising materials for precast bridge girder applications due to its advanced properties and durability, its implementation in the precast industry is subject to several potential concerns. To support implementation, this paper presents the development of nonproprietary UHPC mixtures for precast, pretensioned UHPC bridge girder applications. The nonproprietary UHPC mixtures were developed using materials commonly available in the Texas precast industry with the additional requirement of obtaining a compressive strength of 12-14 ksi (83–97 MPa) within 24 hours without any heat treatment while maintaining current precast, pretensioned bridge girder fabrication practices. The fresh, hardened, and durability properties of both lab- and plant-made UHPC mixtures were investigated. The research results show that selected nonproprietary UHPC mixture developed in a lab setting can be successfully produced in a precast plant setting with comparable properties.