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Field Performance of Fiber Reinforced Concrete Highway Pavements

by V. Ramakrishnan, SD Sch of Mines and Technology, United States,
P. Balaguru, SD Sch of Mines and Technology, United States,
Larry Kostaneski, SD Sch of Mines and Technology, United States,
Dan Johnston, SD Sch of Mines and Technology, United States,



Document Type: Proceeding Paper

Part of: Serviceability and Durability of Construction Materials

Abstract:

This paper reports the evaluation of field performance of fiber reinforced concrete pavements. The concrete was designed for a compressive strength of about 40 MPa. Steel fibers with hooked ends were used at the rate of 39.2 Kg/m³. Trial mix was tested for compressive strength, flexural fatigue strength, impact strength and strength gain with time up to 28 days. Test samples were also made during construction. Cores were also taken for evaluating the inplace strengths of fiber reinforced concrete. The pavement was inspected periodically. This paper presents details in the areas of (1) comparison of laboratory mixture and the mixture used in the field. (ii) comparative performance of control specimens and cores, and (iii) pavement condition report based on the field performance of FRC and plain concrete. The experience indicates that FRC can be constructed with normal construction equipment and its performance is better than plain concrete specially in the area of crack resistance and fatigue strength.

Subject Headings: Fiber reinforced concrete | Concrete pavements | Compressive strength | Strength of materials | Flexural strength | Field tests | Steel fibers

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