Ultra-thin Portland Cement Concrete Overlay
Author: Paul E. King
Publisher:
Published: 1997
Total Pages: 42
ISBN-13:
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Author: Paul E. King
Publisher:
Published: 1997
Total Pages: 42
ISBN-13:
DOWNLOAD EBOOKAuthor: James K. Cable
Publisher:
Published: 2005
Total Pages: 114
ISBN-13:
DOWNLOAD EBOOKThe 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.
Author: James K. Cable
Publisher:
Published: 2000
Total Pages: 31
ISBN-13:
DOWNLOAD EBOOKThe 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.
Author: James K. Cable
Publisher:
Published: 2002
Total Pages: 55
ISBN-13:
DOWNLOAD EBOOKThe 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.
Author: Anthony Manci
Publisher:
Published: 2002
Total Pages: 30
ISBN-13:
DOWNLOAD EBOOKAuthor: Kenneth H. McGhee
Publisher:
Published: 1992
Total Pages: 32
ISBN-13:
DOWNLOAD EBOOKThe report describes the Virginia Department of Transportations' first modern experience with the construction of thin-bonded Portland cement concrete overlays of existing concrete pavements and with the fast track mode of rigid paving. The study was conducted in cooperation with the Federal Highway Administration (FHWA) and used a paving mixture verified in an FHWA mobile laboratory. The study showed that the fast track mode will permit lane closure times as short as 48 hours. Of special interest was the finding that adequate strength of the bond between the old pavement and the overlay is not dependent on the use of a bonding grout.
Author: Kurt D. Smith
Publisher:
Published: 2002
Total Pages: 200
ISBN-13:
DOWNLOAD EBOOKThis report presents the latest information on the design, construction and performance of portland cement concrete (PCC) overlays. It describes the four types of PCC overlays that are commonly used in highway pavement applications: bonded PCC overlays, unbonded PCC overlays, conventional whitetopping and ultra-thin whitetopping. Recommended applications, critical design elements, current overlay design methodologies, recommended construction practices, and performance highlights are described for each overlay type. Information is also provided on the selection of PCC overlays as possible rehabilitation alternatives for existing pavements. Taken together, this document addresses the current "state of the technology" of PCC overlays placed on both existing PCC pavements and on existing hot-mix asphalt pavements.
Author: Matthew T. McCormack
Publisher:
Published: 1991
Total Pages: 72
ISBN-13:
DOWNLOAD EBOOKAuthor: Matthew T. McCormack
Publisher:
Published: 1991
Total Pages:
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1991
Total Pages:
ISBN-13:
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