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Direct Tension Test Method for Ultra-High Performance Concrete

Project Information

Project ID: 
FHWA-PROJ-10-0030
Project Status: 
Active
Start Date: 
Thursday, July 1, 2010
End Date: 
Thursday, December 31, 2015
FHWA Program: 
Infrastructure
FHWA Subprogram: 
Structures
FHWA Activity: 
Ultra-High Performance Concrete (UHPC)
TRT Terms: 
Concrete Structures; Concrete; Infrastructure; Roads; Research; Materials; Highways
FHWA Discipline: 
Design, Construction and Project Management, Structures
Subject Area: 
Bridges and other structures, Materials, Research

Contact Information

First Name: 
Benjamin
Last Name: 
Graybeal
Telephone: 
(202) 493-3122
Team: 
Bridge Engineering Team
Office:
Office of Infrastructure Research and Development
Office Code: 
HRDI-40

Project Details

Project Description: 

This project will develop a test method for the assessment of Ultra-High Performance Concrete (UHPC) tensile mechanical properties. Existing test methods do not effectively relate these properties, resulting in hesitancy from anyone considering the use of UHPC. A practical test method that directly relates the important engineering response will support the continued expansion of UHPC materials in the highway infrastructure. Test method development will be followed by assessment of the performance of multiple UHPC-class materials. Project will also include a phase wherein the efficiency of fiber reinforcement is assessed according to the test method.  One and two-dimensional structural elements will be cast and tested.

Goals

The objective of this research program is to develop a practical, reliable test method that relates the full range of uniaxial tensile response of Ultra-High Performance Concrete (UHPC)-class materials. This tensile response includes both elastic and inelastic behaviors, with the inelastic behaviors including the generation of multiple tightly spaced cracks bridged by internal fiber reinforcement.

Deliverables