01340718

Component

Ultra High Performance Concrete (UHPC) is one of the newer and superior classes of concrete that can be used to develop improved bridges capable of meeting the present and future traffic, environmental, maintenance and economical requirements. Developing on the superior material properties of UHPC, the research discussed herein studies the behavior of UHPC when used as a bridge girder material. Four optimized girders have been cast and studied for various early age as well as long term properties, such as early age shrinkage, transfer length, creep behavior and shrinkage under steam treatment. Data has been recorded through vibrating wire gages installed at strategic locations within each girder before they are cast. While the shrinkage and creep observed are very low which are characteristics of UHPC, various other aspects such as shrinkage being closely tied to formwork restraint and temperature as well as the prestress transfer being dependent on the girder geometry and strand pattern have been discussed. From the results the authors can conclude that UHPC is a promising bridge building material and with further research can be extensively employed for bridges.

The DVD lists the title of this paper as: Shrinkage and Transfer Length Study of Ultra-High-Performance Concrete Girders.

01329018

11-2229

English

16p

2011

Transportation Research Board 90th Annual Meeting

DVD

Figures; Photos; References; Tables (2)

Concrete; Creep; Girder bridges; High performance concrete; Materials selection; Shrinkage; Ultra high performance concrete

Early age concrete; Transfer length

Bridges and other structures; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete

Transportation Research Board Annual Meeting 2011 Paper #11-2229

TRIS, TRB

Feb 17 2011 6:06PM