Ultra-thin Portland Cement Concrete Overlay Extended Evaluation
Ultra-thin Portland Cement Concrete Overlay Extended Evaluation

Author: James K. Cable

Publisher:

Published: 2005

Total Pages: 114

ISBN-13:

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The Iowa ultra-thin project demonstrated the application of thin portland cement concrete overlays as a rehabilitation technique. It combined the variables of base preparation, overlay thickness, slab size, and fiber enhancement into a series of test sections over a 7.2-mile length. This report identifies the performance of the overlays in terms of deflection reduction, reduced cracking, and improved bonding between the portland cement concrete (PCC) and asphalt cement concrete (ACC) base layers. The original research project was designed to evaluate the variables over a 5-year period of time. A second project provided the opportunity to test overlay rehabilitation techniques and continue measurement of the original overlay performance for 5 additional years.

Ultrathin Portland Cement Concrete Overlay Extended Evaluation Construction Report
Ultrathin Portland Cement Concrete Overlay Extended Evaluation Construction Report

Author: James K. Cable

Publisher:

Published: 2000

Total Pages: 31

ISBN-13:

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The objective of this research was to investigate the interface bonding condition between an ultra-thin PCC overlay and an ACC base over time, considering the previously mentioned variables. This research lasted for five years, at which time it was extended an additional five years. The new phase of the project was initiated by removing cracked panels existing in the 2-inch thick PCC sections and replacing them with three inches of PCC. The project extension (TR 432) will provide an increased understanding of slab bonding conditions over a longer period, as well as knowledge regarding the behavior of the newly rehabilitated areas.

Ultrathin Portland Cement Concrete Overlay Extended Evaluation
Ultrathin Portland Cement Concrete Overlay Extended Evaluation

Author: James K. Cable

Publisher:

Published: 2002

Total Pages: 55

ISBN-13:

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The Iowa Department of Transportation (Iowa DOT) UTW Project (HR-559) initiated Ultra-Thin Whitetopping in Iowa. The project is located on Iowa Highway 21 between Iowa Highway 212 and U.S. Highway 6 in Iowa County, near Belle Plaine, Iowa. The above listed research project lasted for five years, and then was extended for another five year period. The new phase of the project (TR 432) was initiated by removing cracked panels existing in the 2-inch thick PCC sections and replacing them with three inches of PCC. The project extension provides an increased understanding of slab bonding conditions over a longer period, as well as knowledge regarding the behavior of the newly rehabilitated areas. This report documents the rehabilitation of the PCC patching of all fractured panels and several cracked panels, taking place in September of 2001.

Thin and Ultra-thin Whitetopping
Thin and Ultra-thin Whitetopping

Author: Robert Otto Rasmussen

Publisher: Transportation Research Board

Published: 2004

Total Pages: 96

ISBN-13: 0309070198

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TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 338: Thin and Ultra-Thin Whitetopping summarizes available information to document how state departments of transportation and others are currently using thin and ultra-thin whitetopping overlays among various pavement rehabilitation alternatives. The report covers all stages of the proper application of whitetopping overlays, including project selection, design, materials selection, construction, maintenance, and eventual rehabilitation or replacement.

Guide to Concrete Overlay Solutions
Guide to Concrete Overlay Solutions

Author:

Publisher:

Published: 2007

Total Pages: 32

ISBN-13:

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This guide will help readers understand concrete overlays and develop confidence in their application. The guide provides the key elements of the six major types of concrete overlays along with specifics on materials, typical sections, and important construction elements.