Evaluation and Prevention of Water Damage to Asphalt Pavement Materials PDF Download
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Author: Byron E. Ruth
Publisher: ASTM International
ISBN: 9780803104600
Category : Technology & Engineering
Languages : en
Pages : 159
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Book Description
Author: Byron E. Ruth
Publisher: ASTM International
ISBN: 9780803104600
Category : Technology & Engineering
Languages : en
Pages : 159
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Book Description
Author: Elizabeth Rae Hunter
Publisher:
ISBN:
Category : Frost
Languages : en
Pages : 164
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Book Description
This research project utilized laboratory evaluations to study effects of freeze-thaw cycling on the tensile strength of eight Hot Mix Asphalt mixtures and to determine if the Georgia Loaded Wheel Tester could be utilized to measure moisture susceptibility of Hot Mix Asphalt mixtures. The evaluation involved eight Hot Mix Asphalt mixtures from combinations of two aggregate types and four asphalt-additive-aging possibilities. Laboratory testing was accomplished in the first phase with the production of 2.5 by 4 inch cores that were freeze-thaw cycled and tested for their indirect tensile strength following Wyoming modified AASHTO T283. The second phase was accomplished using 3 by 6 inch cores that were conditioned and tested for rutting using the Georgia Loaded Wheel Tester. Finally, a statistical analysis was performed to determine if performance of the various mixtures was significantly different in groups of asphalt types and to determine if the Georgia Loaded Wheel Tester was a viable measurement tool for moisture susceptibility.
Author: Thomas William Kennedy
Publisher:
ISBN:
Category : Asphalt concrete
Languages : en
Pages : 54
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Book Description
Author: Sunghwan Kim
Publisher:
ISBN:
Category : Pavements, Asphalt
Languages : en
Pages : 70
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Book Description
Even though moisture sensitivity of Hot Mix Asphalt (HMA) mixtures has been recognized as a major form of distress in asphalt concrete pavements since the advent of asphalt paving technology, the mechanism of this problem has not been clearly identified until now. However, it has been agreed that it can be characterized by the loss of adhesive bond between the asphalt binder and the aggregate or by a softening of the cohesive bonds within the asphalt binder, both of which are due to the action of loading under traffic in the presence of moisture. The evaluation of Hot Mix Asphalt moisture sensitivity has been divided into two categories: visual inspection test and mechanical test. However, most of them have been developed in pre-Superpave mix design. This research was conducted to develop a new test protocol which can overcome the problems of the current procedures and to evaluate the possibility of using the Nottingham Asphalt Tester (NAT) in the resulting procedure.
Author:
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 924
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Book Description
Author: Thomas William Kennedy
Publisher:
ISBN:
Category : Asphalt concrete
Languages : en
Pages : 66
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Book Description
Author:
Publisher: ASTM International
ISBN:
Category :
Languages : en
Pages : 189
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Book Description
Author: A. Gomes Correia
Publisher: CRC Press
ISBN: 1000151263
Category : Technology & Engineering
Languages : en
Pages : 730
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Book Description
This book is an outcome of the sixth conference on bearing capacity of roads and airfield held in Lisbon, Portugal. It covers the following topics: bearing capacity policies, concepts, costs and condition surveys; analysis and modelling; design and environmental effects; and asphalt mixtures.
Author: National Research Council (U.S.). Transportation Research Board
Publisher: Transportation Research Board National Research
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 110
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Book Description
Author: Russell G. Hicks
Publisher: Transportation Research Board
ISBN: 9780309049245
Category : Technology & Engineering
Languages : en
Pages : 104
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Book Description
This synthesis will be of interest to pavement designers, construction engineers, maintenance engineers, and others interested in avoiding or limiting moisture damage in asphalt concrete. Information is provided on physical and chemical explanations for moisture damage in asphalt concrete, along with a discussion of current practices and test methods for determining or reducing the susceptibility of various asphalt concrete components and mixtures to such damage. Moisture damage in asphalt concrete is a nationwide problem which often necessitates premature replacement of highway pavement surfaces. This report of the Transportation Research Board describes the underlying physical and chemical phenomena responsible for such damage. Current test methods used to determine the susceptibility of asphalt concretes, or their constituents, to moisture damage are described and evaluated. Additionally, current practices for minimizing the potential for moisture damage are examined.
