Mechanical and fracture-mechanical properties of geosynthetic reinforced asphalt systems

ABSTRACT Geosynthetic interlayers in asphalt systems have become a convenient technology for lifetime prolongation in road construction engineering. Established testing methods for characterizing construction materials can be used to describe and evaluate these innovative systems. This study compare...

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Bibliographic Details
Published in:Fatigue & fracture of engineering materials & structures 2012-07, Vol.35 (7), p.648-657
Main Authors: JAMEK, M., TSCHEGG, E. K., LUGMAYR, R.
Format: Article
Language:English
Subjects:
Applied sciences
Asphalt
crack growth
Crack propagation
Exact sciences and technology
Fracture mechanics
fracture resistance
Fractures
geosynthetic interlayer
Geosynthetics
Highway construction
Interlayers
Mechanical properties
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
pavement technology
Reference systems
Reinforcement
road construction
Splitting
wedge splitting test
Wedges
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Summary:ABSTRACT Geosynthetic interlayers in asphalt systems have become a convenient technology for lifetime prolongation in road construction engineering. Established testing methods for characterizing construction materials can be used to describe and evaluate these innovative systems. This study compares three groups of asphalt interlayer systems (stress absorbing membrane interlayer = SAMI, asphalt reinforcement, SAMI + asphalt reinforcement) represented by 10 different geosynthetic interlayers in terms of crack growth resistance and strength. The results will be presented in relation to asphalt reference systems without interlayer. The mechanical and fracture–mechanical properties were determined by means of the wedge splitting test (WST) according to Tschegg and partially by the pull‐out test. Due to temperature dependences of the material properties of asphalt, the tests have been performed at −10 °C, 0 °C and +10 °C specimen temperature.
ISSN:8756-758X
1460-2695
DOI:10.1111/j.1460-2695.2011.01659.x