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PMSS Project Details


Project ID:FHWA-PROJ-12-0039
Project Name: Laboratory Testing of Aggregates for Road and Bridge Construction
Status: Active
Last Name:Nicks
First Name:Jennifer E
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:These projects will use standard and nonstandard specialized laboratory testing equipment to characterize aggregates used for road and bridge construction. The results of this research will provide new aggregate characterization methods that will benefit geotechnical and pavement engineers who incorporate these materials into their designs.
Laboratories: Geotechnical Laboratory
Start Date: March 25, 2013
End Date: December 31, 2015
Goals:To evaluate the effect of various parameters on the measured strength of aggregates. First, comparisons between results from triaxial and direct shear testing will be performed for open and well-graded aggregates. Additionally, scale effects will be evaluated for these aggregates.
Test Methodology: Laboratory testing
Expected Benefits:More accurate geotechnical design and strength parameters.
Deliverables:1. Name: Strength Properties of Open-Graded Aggregates Research Report
Product Type(s): Research report
Description: Research report on the measured strength properties of open-graded aggregates using both the large-scale direct shear (LSDS) and the large diameter triaxial (LDTX) devices.
2. Name: Characterization of Aggregates Research Report.
Product Type(s): Research report
Description: Research report on the characterization of aggregates used for road and bridge construction.
Keywords: Testing
Subject Areas: Bridges and other structures