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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
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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....
Title no. 110-M17
INTRODUCTIONSustained postcracking tensile resistance is a fundamental mechanical characteristic of ultra-high-performance fiber-reinforced concrete (UHPFRC). This research program developed a simple, reliable direct tension test (DTT) method that can generate the...
Title no. 105-M68
Accurate determination of the compressive strength of very high strength concrete is currently a difficult proposition due to large testing machine capacity requirements and the need for cylinder end preparation. An experimental program was conducted to determine whether...