Response of Pavements to Freeze-thaw Cycles PDF Download
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Author:
Publisher:
ISBN:
Category : Frost heaving
Languages : en
Pages : 40
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Author:
Publisher:
ISBN:
Category : Frost heaving
Languages : en
Pages : 40
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Author:
Publisher:
ISBN:
Category : Airports
Languages : en
Pages : 31
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Author: Patrick Lavin
Publisher: CRC Press
ISBN: 1482267713
Category : Architecture
Languages : en
Pages : 463
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Book Description
Asphalt Pavements provides the know-how behind the design, production and maintenance of asphalt pavements and parking lots. Incorporating the latest technology, this book is the first to focus primarily on the design, production and maintenance of low-volume roads and parking areas.Special attention is given to determining the traffic capacity, re
Author: Frederick Hugo
Publisher: Transportation Research Board
ISBN: 0309069742
Category : Accelerated life testing
Languages : en
Pages : 213
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Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 325: Significant Findings from Full-Scale Accelerated Pavement Testing documents and summarizes the findings from the various experimental activities associated with full-scale accelerated pavement testing programs.
Author: Steven M. Cramer
Publisher:
ISBN:
Category : Pavements, Concrete
Languages : en
Pages : 50
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Author:
Publisher: DIANE Publishing
ISBN: 1428914021
Category :
Languages : en
Pages : 45
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Winter pavement overload permits and spring load restrictions areimportant to maximize pavement life. In cold regions freeze and thaw conditions have a great effect on the bearing capacity of asphalt concrete (AC) pavement and its sublayers. Studying AC surface deflections from falling weight deflectometer (FWD) tests assists in determining the condition of the surface, base, and subgrade layers of a pavement system. FWD test results are taken from the LTPP Information Management System (IMS). FWD data deflectionbasin indices can be calculated to analyze AC pavement at different seasonalconditions. This data will aid in determining times when load permits and restrictions should be applied. Seasonal effects on AC pavements significantly affect the strength of theAC sublayers. In freezing temperatures the AC pavement and its sublayers become much stronger, where overload permits can be granted. However, when the system thaws the layers become extremely weak. Pavement is subject to damage and FWD tests show significant increases in surface deflection. When this happens spring load restrictions should be utilized to preserve the pavement. An in depth study of FWD data can be used to recommend the best times to enforce winter overload permits and spring load restrictions. Using the BISAR computer program, AC pavement can be modeled to represent FWD behavior at various times.
Author: Asphalt Institute
Publisher:
ISBN: 9781934154175
Category : Asphalt
Languages : en
Pages : 102
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Author: Jean Michel Hovan
Publisher:
ISBN:
Category :
Languages : en
Pages : 426
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Author: Masrur Mahedi
Publisher:
ISBN:
Category : Climatic changes
Languages : en
Pages : 0
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Book Description
An increase in freeze-thaw events will result in detrimental impacts on pavement systems. However, the impacts of recent climate changes on freeze-thaw cycles have not been well studied, although they are of interest to a broad number of transportation agencies. In this study, the number of freeze-thaw events at typical air temperature sensor level (e.g., 6 feet above the earth’s surface) as well as at different pavement layers and critical sub-pavement locations such as saturated subgrade within the active zone were quantified. In response to global warming, current work resulted in rigorously quantified freeze-thaw events rooted in climate data from 1941 to 2020. Results indicated that in the recent 40 years (i.e., 1981-2020), Minnesota winters have become warmer by 1-2 °F daytime and 2-5 °F nighttime temperatures. With a decrease in freezing temperatures, the yearly number of freeze-thaw cycles tended to decrease at shallow pavement depths (
