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Investigations on fracture characteristics of geosynthetic reinforced asphalt concrete beams using single edge notch beam tests
Published in Elsevier Ltd
2019
Volume: 47
   
Issue: 5
Pages: 642 - 652
Abstract
Reflective cracking is a major cause for premature deterioration of asphalt pavements. Different varieties of geosynthetics are used at the interfaces of surface layers to control the reflective cracks. The significant factors influencing their efficiency are the flexural strength and interfacial bonding. Fracture energy that leads to development of cracks and their propagation can be investigated by single-edge notched beam (SENB) tests with sufficient accuracy. Double layered asphalt samples were extracted from pavement sections purposely built as part of this investigation for conducting quasi-static SENB tests. The goal of this paper is two-fold (a) to present a methodology for conducting SENB tests to measure the fracture properties of geosynthetic reinforced samples at temperatures of 10 °C, 20 °C and 30 °C and (b) evaluation of the flexural and the fracture characteristics of unreinforced and geosynthetic reinforced samples. The geosynthetic reinforcement did not show much improvement of the Asphalt Concrete (AC) in the pre-cracking phase but slowed down the crack propagation. The failure pattern of reinforced specimens has changed from quasi-brittle to ductile. An equation is proposed to predict the crack initiation force of SENB sample knowing the bond strength of the corresponding reinforced AC layers at their respective temperature. © 2019 Elsevier Ltd
About the journal
JournalData powered by TypesetGeotextiles and Geomembranes
PublisherData powered by TypesetElsevier Ltd
ISSN02661144
Open AccessNo
Concepts (25)
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    ASPHALT CONCRETE
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    Brittleness
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    CONCRETE TESTING
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    Concretes
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    Deterioration
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    Fracture
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    FRACTURE ENERGY
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    Geosynthetic materials
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    Reinforcement
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    Fracture characteristics
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    Geosynthetic reinforcement
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    Geosynthetics
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    Interfacial bonding
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    PREMATURE DETERIORATION
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    REFLECTIVE CRACKING
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    SINGLE EDGE NOTCHED BEAMS
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    SINGLE-EDGE NOTCHED BEAM TEST
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    Cracks
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    Asphalt
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    Cracking (fracture)
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    Geotextile
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    Pavement
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    Reinforced concrete
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    Strength
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    Structural component