Laboratory Fatigue Evaluation of Continuously Fiber Reinforced Concrete Pavement

Project Details
STATE

LA

SOURCE

RIP

START DATE

09/01/13

END DATE

02/28/15

RESEARCHERS

Tyson Rupnow, Louisiana Transportation Research Center

SPONSORS

Bill King, Louisiana Transportation Research Center

KEYWORDS

Continuously reinforced concrete pavements, Failure, Fiber reinforced concrete, Fibers, Hardness, Load tests, Mechanics, Pavement performance

Project description

This study presents the first approach to develop a new concrete pavement structure reinforced only with fibers. This research will identify probable combinations of fibers (dosage and length combinations) that will adequately perform repeated load fatigue tests. While fibers and high dosage fiber combinations have been previously used in concrete, these combinations have never before been use in a Department of Transportation (DOT) pavement structure. The major difference between previous applications and the current objective is number and level of load applications. The fundamental objective of this research is to determine how Continuously Fiber Reinforced Concrete Pavements (CFRCPs) behave under highway-type loading. The specific objectives of this study are to characterize the fresh and hardened properties of CFRCP concrete, determine the comparative fatigue resistance of different fibers and differing fiber blends and dosage rates, perform a detailed economic analysis of all pavement types through a cost-benefit analysis and provide recommendations for future research, including full scale loading and possible field implementation sites.
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