Temperature Adjustment of Dynamic Deflection Measurements on Asphalt Concrete Pavements PDF Download
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Author: Robert Kenneth Wolfe
Publisher:
ISBN:
Category : Pavements, Asphalt concrete
Languages : en
Pages : 116
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Book Description
The application of elastic theory to the design of overlays on existing pavement requires that a modulus of elasticity be assigned to the existing structural system. Estimates of elastic modulus are obtained from dynamic deflection reading in the field; but asphalt is a highly temperature-sensitive visco-elastic material and deflections not corrected to a standard temperature can produce misleading results. It is therefore the objective of the present study to develop a procedure for estimating an effective modulus of elasticity for a layer of asphaltic concrete in which some temperature gradient exists because of the combined influences of solar radiation, wind, air temperature, cloud cover and other variables specific to time and location which cause temperature variation within the pavement layer. Two models are presented from the achievement of that objective.
Author: Robert Kenneth Wolfe
Publisher:
ISBN:
Category : Pavements, Asphalt concrete
Languages : en
Pages : 116
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Book Description
The application of elastic theory to the design of overlays on existing pavement requires that a modulus of elasticity be assigned to the existing structural system. Estimates of elastic modulus are obtained from dynamic deflection reading in the field; but asphalt is a highly temperature-sensitive visco-elastic material and deflections not corrected to a standard temperature can produce misleading results. It is therefore the objective of the present study to develop a procedure for estimating an effective modulus of elasticity for a layer of asphaltic concrete in which some temperature gradient exists because of the combined influences of solar radiation, wind, air temperature, cloud cover and other variables specific to time and location which cause temperature variation within the pavement layer. Two models are presented from the achievement of that objective.
Author: R. Kenneth Wolfe
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: Ronald Netemeyer
Publisher:
ISBN:
Category : Aspalt concrete
Languages : en
Pages : 148
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Book Description
Author: Vernon J. Marks
Publisher:
ISBN:
Category : Nondestructive testing
Languages : en
Pages : 34
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Book Description
Author: Erland O. Lukanen
Publisher:
ISBN:
Category : Pavements, Asphalt
Languages : en
Pages : 86
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Book Description
This report presents the results of an analysis of the response that deflections and backcalculated asphalt moduli have to the pavement temperature. The study used deflection and temperature data from 40 sites monitored in the Seasonal Monitoring Program of the Long Term Pavement Performance (LTPP) program. The report presents improved methods of estimating the temperature within an asphalt pavement based on the measurement procedures used for the LTPP program. The data necessary to estimate the temperature within the asphalt included the surface temperature, time of day, depth below the surface, and the average air temperature from the previous day.
Author: Armelle Chabot
Publisher: Springer Nature
ISBN: 3030552365
Category : Technology & Engineering
Languages : en
Pages : 724
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Book Description
This volume gathers the latest advances, innovations, and applications in the field of accelerated pavement testing (APT), presented at the 6th International Conference on Accelerated Pavement Testing, in Nantes, France, in April 2022. Discussing APT, which involves rapid testing of full-scale pavement constructions for structural deterioration, the book covers topics such as APT facilities, APT of asphalt concrete and sustainable/innovative materials, APT for airfield pavements, testing of maintenance and rehabilitation solutions, testing of smart and multi-functional pavements, data analysis and modeling, monitoring and non-destructive testing, and efficient means of calibrating/developing pavement design methods. Featuring peer-reviewed contributions by leading international researchers and engineers, the book is a timely and highly relevant resource for materials scientists and engineers interested in determining the performance of pavement structures during their service life (10+ years) in a few weeks or months.
Author: Kamran Majidzadeh
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 152
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Book Description
Author: Douglas M. Marshall
Publisher: CRC Press
ISBN: 113802693X
Category : Political Science
Languages : en
Pages : 1944
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Book Description
The proliferation of technological capability, miniaturization, and demand for aerial intelligence is pushing unmanned aerial systems (UAS) into the realm of a multi-billion dollar industry. This book surveys the UAS landscape from history to future applications. It discusses commercial applications, integration into the national airspace system (NAS), System function, operational procedures, safety concerns, and a host of other relevant topics. The book is dynamic and well-illustrated with separate sections for terminology and web- based resources for further information.
Author:
Publisher: Transportation Research Board National Research
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 100
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Book Description
Author: R. L. Moore
Publisher:
ISBN:
Category : Pavements, Asphalt concrete
Languages : en
Pages : 66
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Book Description
