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The Effect of Carbon Nano-tube on the Fatigue Life of Asphalt Mixtures
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نویسنده
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Ziari Hasan ,Farahani Hossein ,Goli Ahmad ,Akbari Taha
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منبع
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international journal of transportation engineering - 2014 - دوره : 2 - شماره : 1 - صفحه:81 -96
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چکیده
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The fatigue cracks are observed in asphalt surfaces much more than ruts. this paper deals with theinfluence of carbon nano-tube on the fatigue life of asphalt mixtures. these samples are made upof the slabs cut by the asphalt cutting saw. fatigue beams contain 0, 0.3, 0.6, 0.9, 1.2, and 1.5 percentof carbon nano-tube. the fatigue experiment was conducted using a 4-point semi-sinusoidalloading on a flexural beam for a constant strain (600 micro-strain) at 20oc. the end of these samples,fatigue life is assumed to be when 50% reduction in the initial rigidity happens. the resultsshow that with an increase in the percentage of carbon nano-tube in the fatigue samples, the fatiguelife of asphalt mixtures and the amount of cumulative dissipated energy increase noticeably, andthe rate of damage propagation is reduced. also rut depth, fracture energy density, marshall stability,indirect tensile strength have been improved excellently.
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کلیدواژه
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Fatigue life ,carbon nano-tube ,experiment of flexural beam ,rate of damage propagation
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آدرس
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iran university of science and technology, Professor, Department of Civil Engineering, Iran University of Science and Technology, Tehran, Iran , ایران, iran university of science and technology, MSc Grad , Department of Civil Engineering, Iran University of Science and Technology, Tehran, Iran , ایران, iran university of science and technology, Ph D Candidate, Department of Civil Engineering, Iran University of Science and Technology, Tehran, Iran , ایران, iran university of science and technology, MSc Grad , Department of Civil Engineering, Iran University of Science and Technology, Tehran, Iran , ایران
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Authors
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