Comparative Performance Of Structural Layers In Pavement Systems

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ISBN 13 :
Total Pages : 145 pages
Book Rating : 4.:/5 (227 download)

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Download or read book Comparative Performance of Structural Layers in Pavement Systems. Volume 4. Analysis of Insulating Layers in Pavement Test Sections written by and published by . This book was released on 1977 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes an analysis of results from tests of pavements containing insulating layers to determine the structural adequacy of pavements containing the various types of insulating materials and to determine the location of the insulating layers to ensure adequate structural performance of the pavements Volume I of this report describes the design, construction, and behavior under traffic of both flexible and rigid prototype airfield pavements containing expanded polystyrene panels and lightweight concrete containing expanded polystyrene beads as the coarse aggregate. The results from the traffic tests are analyzed herein to determine why the pavements containing layers of the insulating materials performed as they did and the proper location within the pavement structure for the insulating layers to ensure adequate structural performance. Conclusions from the study indicate that the insulating materials behave differently than conventional paving materials. For flexible pavement design, the vertical compressive stresses and horizontal tensile stresses in the insulating materials should be kept below measured strength values. For rigid pavement design, granular or chemically stabilized base or subbase material should be provided between the concrete slab and the insulating material, and a base or subbase course should be placed between the polystyrene panels and subgrade materials susceptible to pumping.