Characteristics of undamaged asphalt mixtures in tension and compression


Cracking in asphalt pavements is the net result of fracture and healing. The ability to accurately measure and predict the appearance of cracking depends on being able to determine the material properties that govern the rate of development of these two contrary aspects of cracking. This study is devoted to identifying the datum material properties in undamaged samples. It will make use of viscoelastic formulations and of well-known mechanics concepts the way in which these properties are altered by the composition of the mixture. Also introduced in this study is a process that makes extensive use of the pseudo-strain concept in decomposing the strain components. One of the many benefits of this approach is the ability to measure the fatigue endurance limit of an asphalt mixture with a simple test that requires only half an hour. The study begins with a detailed discussion of these concepts and properties and the test methods that simply and accurately measure them. One of the great advantages of using mechanics is that it provides a rapid and efficient way to predict the rate of appearance of the two aspects of pavement cracking, fracture and healing. Mechanics requires the use of material properties. An accurate and efficient determination of undamaged material properties is fundamental and important to the prediction of the performance of asphalt mixtures. It is found that the undamaged properties of an asphalt mixture are different when they are loaded in tension or in compression and this distinction is important. This study addresses the efficiency of the laboratory testing methods, and the effects of the volumetric material components and environmental factors such as temperature and ageing on the undamaged material properties. It also introduces the non-destructive tests that must be made in order, subsequently, to measure the damaged properties of the same materials.

Publication DOI:
Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Aston Institute of Materials Research (AIMR)
College of Engineering & Physical Sciences > Aston Logistics and Systems Institute
Additional Information: This is an Accepted Manuscript of an article published by Taylor & Francis in International Journal of Pavement Engineering on 19/1/17, available online:
Uncontrolled Keywords: asphalt mixtures,viscoelasticity,complex modulus,anisotropy,pseudostrain energy,strain decomposition,modulus gradient,ageing,Civil and Structural Engineering,Mechanics of Materials
Publication ISSN: 1029-8436
Last Modified: 08 Dec 2023 10:19
Date Deposited: 19 Aug 2019 10:14
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2018-03-04
Published Online Date: 2017-01-19
Accepted Date: 2016-12-28
Submitted Date: 2016-12-10
Authors: Lytton, Robert L.
Gu, Fan
Zhang, Yuqing (ORCID Profile 0000-0001-5825-0131)
Luo, Xue



Version: Accepted Version

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