A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The conventional method of asphalt mix design based on the Marshall stability test cannot be used directly for pavement thickness design and performance analysis. On the other hand, the triaxial test that measures fundamental engineering properties of friction-cohesive materials is a well understood and established test in civil engineering, and the authors have reported in an earlier paper that triaxial test properties of asphalt mixtures can be used to analytically study the response of the mixtures under load. In an effort to establish a link between the two tests, this paper illustrates that the three triaxial test-determined properties of an asphalt mixture, namely cohesion c, angle of friction phi and elastic modulus Ep are statistically correlated with Marshall stability test properties of the asphalt mixture. The statistical analyses furnish useful information on the trends of variation of various material parameters as a function of mix properties. Potentially useful statistical regression predictive models are derived for predicting material parameters of the Marshall stability tests using the triaxial test properties, and vice-versa. Such models make it possible to analyze pavement performance under loads for pavements constructed on the base of Marshall mix design.
The conventional method of asphalt mix design based on the Marshall stability test cannot be used directly for pavement thickness design and performance analysis. On the other hand, the triaxial test that measures fundamental engineering properties of friction-cohesive materials is a well understood and established test in civil engineering, and the authors have reported in an earlier paper that triaxial test properties of asphalt mixtures can be used to analytically study the response of the mixtures under load. In an effort to establish a link between the two tests, this paper illustrates that the three triaxial test-determined properties of an asphalt mixture, namely cohesion c, angle of friction phi and elastic modulus Ep are statistically correlated with Marshall stability test properties of the asphalt mixture. The statistical analyses furnish useful information on the trends of variation of various material parameters as a function of mix properties. Potentially useful statistical regression predictive models are derived for predicting material parameters of the Marshall stability tests using the triaxial test properties, and vice-versa. Such models make it possible to analyze pavement performance under loads for pavements constructed on the base of Marshall mix design.
Relating triaxial test properties of asphalt mixtures to mix parameters determined by Marshall stability test
Beziehung zwischen den im dreidimensionalen Versuch ermittelten Eigenschaften von Asphaltgemischen und den mit dem Marshall-Stabilitätstest erhaltenen Werten
Journal of Testing and Evaluation ; 25 ; 471-478
1997
8 Seiten, 4 Bilder, 8 Tabellen, 15 Quellen
Article (Journal)
English
dreiachsiger Spannungszustand , dreidimensionale Darstellung , Asphalt , Decke (Straßenbelag) , Festigkeitsprüfung , Kohäsion , Reibung , Formstabilität , Elastizitätsmodul , statistisches Verfahren , Korrelation , Gemisch , gefüllter Verbundwerkstoff , mineralischer Füllstoff , Kies , Prüfmaschine , praktische Untersuchung , Spannungsdehnungsverhalten , Singapur
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