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PMSS Project Details


Project ID:FHWA-PROJ-06-0024
Project Name: Shear Behavior of Lightweight High-Performance Concrete Girders
Status: Active
Last Name:Graybeal
First Name:Benjamin A (Ben)
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 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 result in applications that have lighter transportation loads, require smaller construction equipment, result in extended span ranges and 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: December 31, 2014
Goals:This projects aims to recommend specifications for shear design of lightweight high-performance concrete beams and girders.
Test Methodology: Full-scale physical testing of structural members in combination with all necessary computational analysis.
Other Information: Full-scale physical testing began in early 2010 and was completed in 2011. Thirty full-scale girder tests within this project.
Expected Benefits:Research will facilitate a revision of the lightweight concrete provisions in the LRFD Bridge Design Specifications.
Keywords: Concrete Structures
Subject Areas: Bridges and other structures