STUDY AND EVALUATION OF FIBER REINFORCED DOWELL BARS FOR USEIN HIGHWAYS

Award Information
Agency:
Department of Transportation
Branch
n/a
Amount:
$292,739.00
Award Year:
1990
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
10999
Agency Tracking Number:
10999
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
1510 South Broadway, Little Rock, AR, 72202
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
() -
Research Institute:
n/a
Abstract
DOWEL BARS HAVE TRADITIONALLY BEEN USED AS AN IMPORTANT LOADTRANSFER MECHANISM ON OUR FEDERAL HIGHWAYS. A SIGNIFICANT PROBLEM OCCURRS WITH THE USE OF THESE BARS DUE TO RUST AND RESULTANT SPALLING AND CRACKING CONCRETE. COMPOSITE REINFORCING BARS (CRB) HAVE BECOME WIDELY USED FOR CRACK CONTROL IN MANY REINFORCED CONCRETE STRUCTURES EXPOSED TO AGGRESSIVE ENVIRONMENTS. A LIMITED AMOUNT OF DATA IS AVAILABLE REGARDING THE CHARACTERISTICS AND PERFORMANCE OF THIS MATERIAL. MORE INFORMATION IS NECESSARY TO FULLY UNDERSTAND CRB TECHNOLOGY AND TO DETERMINE THE FEASIBILITY OF PRODUCING LARGER DIAMETER BAR MATERIAL OF THIS NATURE TO SUCCESSFULLY USE AS DOWEL BARS AT PAVEMENT JOINTS ON OUR HIGHWAYS. THIS PROPOSAL INTENDS TO ANALYZE CURRENT CRB TECHNOLOGY AND DETERMINE THE FEASIBILITY OF PRODUCING LARGER DIAMETER COMPOSITE REINFORCING BARS THAT CAN BE USED AS FIBER COMPOSITE DOWEL BARS USING CRB TECHNOLOGY. THE GOAL IS TO PRODUCE FIBER COMPOSITE DOWEL BARS OF COMPARABLE SHEAR AND FATIGUE STRENGTH OF CURRENTLY USED STEEL DOWEL BARS BEING UTILIZED IN FEDERAL HIGHWAY PAVEMENT DESIGN.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government