Deformation Mechanism in Asphaltic Concrete

Khedr, Safwan

doi:10.1061/(asce)0733-947x(1986)112:1(29)

Cited by 30 publications

(14 citation statements)

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“…The most wellknown model of permanent strain is a classical power model in the literature (Lytton et al, 1993). This approach was used for asphalt mixtures by Khedr (1986). This theoretical approach based on the mechanical energy concept can lead to a better understanding of the rutting mechanism in asphalt mixtures, expressed by…”

Section: Theoretical Approach Of the Permanent Strain Mechanismmentioning

confidence: 99%

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Plastic deformation of asphalt mixture under waveform loading

Mansourkhaki

Sarkar

2015

Proceedings of the Institution of Civil Engineers - Transport

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The primary objective of this research study was to investigate the effects of waveform loading and loading pulse duration on plastic deformation of asphalt mixtures, the so-called rutting potential. Specifically the effects of loading patterns corresponding to axle configurations (single, double and triple) under various short loading pulses have been examined. The experiments were conducted at three stress levels, pulse durations and loading patterns. Finally, using the associated model parameters, the impacts of each variable on permanent strain were evaluated. It is concluded that with certain pulse durations, plastic deformation under triple axles could be higher than those caused by single and double axles and yet under double axles it could be higher than those under single axles.

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Section: Theoretical Approach Of the Permanent Strain Mechanismmentioning

confidence: 99%

“…The magnitudes of the a and b coefficients depend on the combination of material properties and test conditions (Khedr, 1986). The above model is applicable to the primary and secondary phase of asphalt mixture strain where large permanent strains do not occur very rapidly.…”

Section: Theoretical Approach Of the Permanent Strain Mechanismmentioning

confidence: 99%

Plastic deformation of asphalt mixture under waveform loading

Mansourkhaki

Sarkar

2015

Proceedings of the Institution of Civil Engineers - Transport

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“…Khedr (1986) analyzed the parameters of this relationship and concluded that the parameter (m) is dependent on the material type. Stress-strain pattern and intensity, stress level, and dissipated plastic strain energy during the dynamic loading affect the parameter (A).…”

Section: Ohio State Modelmentioning

confidence: 99%

Stochastic finite element analysis of moisture damage in hot mix asphalt

Breakah

Williams

2013

Mater Struct

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“…Khedr [6] analyzed the parameters of this relationship and concluded that the parameter (m) is dependent on the material type. Stress-strain pattern and intensity, stress level, and dissipated plastic strain energy during the dynamic loading affect the parameter (A).…”

Section: Ohio State Modelmentioning

confidence: 99%