PMSS Project Details

Project ID:	FHWA-PROJ-06-0025
Project Name:	Transfer Length and Development Length Behaviors of Lightweight High-Performance Concrete Girders
Status:	Active
Contact:	Last Name: Graybeal First Name: Benjamin A (Ben) Telephone: 202-493-3122 E-mail: benjamin.graybeal@dot.gov
Organization:	Federal Highway Administration - Turner-Fairbank Highway Research Center (TFHRC)
Office:	Office of Infrastructure Research and Development
Team:	Bridge and Foundation Engineering Team
Roadmap/Focus area(s):	Infrastructure Research and Technology Strategic Plan and Roadmap
Project Findings:	Data not yet available
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.
Laboratories:	Structures Laboratory Concrete Laboratory
Start Date:	October 1, 2006
End Date:	April 30, 2013
Funding Amount:	$150,000.00
FHWA Program Name:	Innovative Bridge Research and Deployment
Goals:	This project aims to recommend design specifications for the transfer and development length of prestressing strand in lightweight high-performance concrete girders.
Project Type:	Onsite
Background Information:	Data not yet available
Test Methodology:	Full-scale physical testing of structural members in combination with all necessary computational analysis.
Other Information:	Full-scale physical testing began in May 2009 and was completed in February 2010. There were 24 full-scale girder tests within this project.
Partners:	Data not yet available
More Information URL(s):
Fieldtest:	Data not yet available
Expected Benefits:	Data not yet available
Deliverables:	Name: FHWA RESEARCH PROGRAM ON LIGHTWEIGHT HIGH-PERFORMANCE CONCRETE – DEVELOPMENT LENGTH OF PRESTRESSING STRAND Product Type(s): Other Description: The deliverable is a conference proceeding 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. Audiences: Researchers, State highway agencies Secondary Audiences:
Related URL(s):
FHWA Topics:	Roads and Bridges--Design Roads and Bridges--Structures Research/Technologies--Turner-Fairbank Highway Research Center (TFHRC)
TRT Terms:	Concrete Structures Mechanical Tests
FHWA Disciplines:	Design Structures
Subject Areas:	Bridges and other structures Construction Materials