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.

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.

Annual Report
Annual Report

Author: Iowa State University. Department of Civil & Construction Engineering

Publisher:

Published: 2002

Total Pages: 116

ISBN-13:

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Material and Construction Optimization for Prevention of Premature Pavement Distress in PCC Pavements
Material and Construction Optimization for Prevention of Premature Pavement Distress in PCC Pavements

Author:

Publisher:

Published: 2008

Total Pages: 300

ISBN-13:

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In Phase I, the research team contacted each of 16 participating states to gather information about concrete and concrete material tests. A preliminary suite of tests to ensure long-term pavement performance was developed. The tests were selected to provide useful and easy-to-interpret results that can be performed reasonably and routinely in terms of time, expertise, training, and cost. The tests examine concrete pavement properties in five focal areas critical to the long life and durability of concrete pavements: (1) workability, (2) strength development, (3) air system, (4) permeability, and (5) shrinkage. The tests were relevant at three stages in the concrete paving process: mix design, preconstruction verification, and construction quality control. In Phase II, the research team conducted field testing in each participating state to evaluate the preliminary suite of tests and demonstrate the testing technologies and procedures using local materials.