Ultra-High Performance Concrete: An Advanced Solution for Accelerated Bridge Pier Cap Rehabilitation and Bearing Replacement

The objective of this paper is to propose and illustrate feasibility, approach, validation as per prevailing codes design standards, specification rehabilitate bridge pier cap by using Ultra-High Performance Concrete (UHPC). evaluation existing caps bearings indicates that the complete removal bearing undesirable due 1) massive size 2) difficulty in cutting through thick components 3) deeply anchored lower shoe 4) huge cost time required erect temporary support system for superstructure facilitate construction new piers. To overcome these difficulties, UHPC could be cast around up pin. This used jacks bearings. low height permanent then installed after removing upper bearing. In present research, first properties are summarized followed case studies check feasibility solution UHPC. complex load paths idealized validated strut tie model AASHTO LRFD Bridge Design Specification.