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The focus of the Long-Term Bridge Performance (LTBP) program is to better understand bridge performance. In order to define and identify performance and performance issues, a study was initiated to synthesize research activities relevant to bridge...
Uncertainties in condition, deterioration, maintenances actions, costs and time of applying actions to bridges at different ages of the bridge life. The charts depicts the subjectivity in modeling bridge conditions and maintenance practices applied to bridges. The horizontal axis represents the...
The seventh and final bridge was selected for the LTBP pilot study, which was designed to validate the methods and protocols developed during the first phase of the program. The pilot study also was...
Strategic Plan Objectives, Analysis Outcomes, and Supporting Projects
Mail Address:
LTPP Customer Support Service Center
HRDI-30
6300 Georgetown Pike, Room F-209
McLean, Virginia 22101-2296
Email: ltppinfo@dot.gov
Phone: 202-493-3035
Fax: 202-493-...
OMB Control No. 2125-0590
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LTPPBind Online is a web-based tool to help highway agencies select the most suitable performance grade (PG) binder for a particular site based on the American...
Q: What is concrete?
A: Concrete is a composite material made from coarse aggregate (rocks), fine aggregate (sand), portland cement, and water. When mixed, the portland cement and water combine together in a chemical reaction to create the glue that holds together the...
by Benjamin A. Graybeal
This article is reprinted with permission from ACI MATERIALS JOURNAL
Title no. 104-M17
An experimental program was conducted to determine the uniaxial compressive behaviors of an ultra-high performance fiber-reinforced concrete (UHPFRC). Cylinders were...
The Federal Highway Administration (FHWA) Ultra-high Performance Concrete Research Program has been conducted through the FHWA Office of Infrastructure Research and Development at Turner-Fairbank Highway Research Center. Contact Ben Graybeal (benjamin....