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Title: APPLICATION OF CRACKING AND SEATING AND USE OF FIBERS TO CONTROL REFLECTIVE CRACKING
Accession Number: 00637685
Record Type: Component
Availability: Find a library where document is available Abstract: Two methods for reducing pavement cracking on asphalt overlays over concrete pavement on I-74 in Indiana--cracking and seating before overlay and fiber reinforcement in the overlay mixture--were evaluated. The project was constructed in 1984 and 1985 and divided into several experimental sections and control sections. As a performance comparison with the experimental sections, the control sections were overlaid by the conventional method. The study results based on the 7-year pavement performance data indicated that the cracking and seating technique was successful in this project: it delayed most of the transverse cracks for 5 years. The majority of the transverse cracks on the cracked and seated sections were thermal cracks, which were narrower and less severe than the reflective cracks on the control section. It was also found that the type of hammers used for cracking the concrete slabs had strong effects on pavement performance. The use of fibers in the overlay mixture further reduced transverse cracks on cracked and seated sections but did not improve the cracking resistance of the control sections. Fibers improved rutting resistance on both control and cracked and seated sections. However, the sections with fibers exhibited quick decreases in pavement strength and rideability. Thicker overlays increased the construction costs significantly but did not reduce the transverse crack intensities. According to the pavement performance and the cost analyses, it is recommended that the thickness of asphalt overlay be determined only by the pavement strength requirement and not be increased as a means of cracking control.
Supplemental Notes: This paper appears in Transportation Research Record No. 1388, Rigid and Flexible Pavement Design and Rehabilitation. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Monograph Accession #: 01403222
Language: English
Authors: Jiang, YiMcDaniel, Rebecca SPagination: p. 150-159
Publication Date: 1993
Serial: ISBN: 0309054575
Features: Figures
(8)
; Photos
(2)
; References
(2)
; Tables
(2)
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Construction; Design; Finance; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces
Files: TRIS, TRB, ATRI
Created Date: Sep 28 1993 12:00AM
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