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Transfer Length and Development Length Behaviors of Lightweight High-Performance Concrete Girders

Project Information

Project ID: 
FHWA-PROJ-06-0025
Project Status: 
Active
Start Date: 
Sunday, October 1, 2006
End Date: 
Tuesday, March 31, 2015
FHWA Program: 
Infrastructure
FHWA Subprogram: 
Structures
FHWA Topics: 
Research/Technologies--Turner-Fairbank Highway Research Center (TFHRC); Roads and Bridges--Design; Roads and Bridges--Structures
TRT Terms: 
Bridges; Concrete; Concrete Structures; Girders; Infrastructure; Materials; Mechanical Tests; Research
FHWA Discipline: 
Design, Structures
TRB Subject Area: 
Bridges and other structures, Construction, Materials

Contact Information

First Name: 
Ben
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: 

Recently, more emphasis has been placed on the use of lightweight or specified density concrete as a solution for several bridge applications. The properties of these materials facilitate deployment of structural components that weigh less, require smaller construction equipment, have extended span ranges, and have reduced inertia forces. The American Association of State Highway and Transportation Officials specifications for designing with these materials have not been significantly updated since the 1960s. This work, along with the work of National Cooperative Highway Research Program Project 18-15, intends to update the specifications appropriately for the modern version of these materials.

Goals

This project aims to recommend design specifications for the transfer and development length of prestressing strand in lightweight high-performance concrete girders.

Deliverables

Deliverable Name: 
FHWA Research Program on Lightweight High-Performance Concrete – Development Length of Prestressing Strand
Deliverable Type: 
Other
Deliverable Description: 
The deliverable is a manuscript presenting preliminary results from the research study. This was presented in the proceedings of the 2010 Concrete Bridge Conference, which was held in Phoenix, AZ.