U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
| Project Information | ||
| Project ID: | FHWA-PROJ-08-0040 | |
| Project Name: | Understanding the Alkali-Silica Reaction (ASR) Mechanism and Developing Rapid and Reliable Laboratory Test Methods to Address ASR Reactivity of Concrete Mixture Design | |
| Project Status: | Completed | |
| Start Date: | September 30, 2008 | |
| End Date: | December 31, 2013 | |
| Contact Information | ||
| Last Name: | Virmani | |
| First Name: | Paul | |
| Telephone: | 202-493-3052 | |
| E-mail: | paul.virmani@dot.gov | |
| Office: | Office of Infrastructure Research and Development | |
| Team: | Infrastructure Management Team [HRDI-60] | |
| Program: | Alkali-Silica Reactivity | |
| Project detail | ||
| Roadmap/Focus area(s): | Infrastructure Research and Technology Strategic Plan and Roadmap | |
| Project Description: | The goal of this project is to eliminate/reduce the deteriorating effects of alkali-silica reactions (ASRs) in highway concrete structures, even when exposed to adverse natural environments by understanding alkali-silica reactions (ASRs) mechanisms and developing methodology to design concrete mix design resistant to alkali-silica reactions (ASRs) phenomenon. Another goal of this project is to develop an accelerated laboratory test method to replace the ASTM C 1260 test method, which takes one to two years to complete. | |
| Goals: |
The key project objectives are to:
(1) Advance the fundamental understanding of an alkali-silica reaction (ASR).
(2) Develop a rapid and reliable test method to evaluate concrete mixture design to assess alkali-silica reaction (ASR) reactivity.
|
|
| Product Type: | Research report | |
| Test Methodology: | The test approach is to use lightweight aggregate (LWA) to reduce the lithium content in concrete mixture to control alkali-silica reactions (ASRs). Another approach is to identify the mineralogy and composition of aggregates and fly ashes to design durable concrete mix design without lengthy laboratory evaluation. | |
| Expected Benefits: | The expected benefit is long-lasting structures with no alkali-silica reactions (ASR) for the design life. | |
| Deliverables: | Name: Report Product Type(s): Research report Description: Methodology for concrete mix design with minimal laboratory evaluation. | |
| FHWA Topics: | Roads and Bridges--Structures | |
| TRT Terms: | Materials Maintenance Concrete Infrastructure Bridges Research |
|
| FHWA Disciplines: | Structures Pavement and Materials |
|
| Subject Areas: | Bridges and other structures Maintenance and Preservation Pavements |
|
 |
||
