ارزیابی مشخصات برشی نوسانی بین روکش و روسازی قدیمی

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانش آموخته دکتری، دانشکده مهندسی عمران دانشگاه صنعتی امیرکبیر، تهران

2 استاد، دانشکده مهندسی عمران دانشگاه صنعتی امیرکبیر، تهران

3 استاد، دانشکده مهندسی عمران، دانشگاه صنعتی امیرکبیر، تهران

چکیده

یکی از مهمترین خواص بین لایه های روکش و روسازی قدیمی که می تواند عملکرد روکش را به طور کامل تحت الشعاع قرار دهد مقاومت برشی بین لایه ها است. آزمایشهای زیادی برای اندازه گیری این مقاومت ابداع شده اند اما آزمایش استانداردی برای اندازه گیری این مقاوت برشی وجود ندارد. یکی از واقع بینانه ترین روشها برای ارزیابی خواص برشی بین لایه های روسازی ارزیابی مقدار سختی برشی و همچنین افت مقدار سختی برشی بین لایه ­های روسازی تحت بارگذاری نوسانی است. در این پژوهش آزمایش ابداعی در دانشگاه صنعتی امیرکبیر که توسط دستگاهی موسوم به AUT-SLT انجام می­گیرد مورد ارزیابی آماری جهت سنجش تکرار پذیری نتایج و همچنین مورد مقایسه با نتایج ارائه شده با تحقیقات پیشین قرار گرفت. نتایج آزمونهای آماری بیانگر تکرار پذیری و همچنین مشابهت فرم نمودار حاصل با نمودارهای حاصل از تحقیقات پیشین می باشد.
 

کلیدواژه‌ها


عنوان مقاله [English]

Evaluation Of The Shear Bonding Characteristics Between Overlay And Old Asphalt Layer

نویسندگان [English]

  • A. Noory 1
  • F. MoghadasNejad 2
  • A. Khodaii 3
1 Ph.D. Grad. , Department of Civil Engineering, Amirkabir University of Technology, Tehran, Iran
2 Professor, Department of Civil Engineering, Amirkabir University of Technology, Tehran, Iran
3 Professor, Department of Civil Engineering, Amirkabir University of Technology, Tehran, Iran
چکیده [English]

One of the most influential properties of a pavement, which can completely change the coating performance, is the shear bonding of the layers. Many experiments have been conducted to measure this resistance, but there is no standard test for measuring this shear strength. One of the most realistic methods for evaluating the shear properties between the pavement layers is the evaluation of the shear stiffness, as well as the loss of the shear stiffness between the pavement layers under cyclic loading. In this research, a pilot experiment in the Amirkabir University of Technology, conducted using a machine called AUT-SLT. The repeatability of the results was statistically evaluated and also compared with the results presented in previous research. The results of statistical tests indicate the repeatability and also the similarity of the diagram form with the previous research charts. Accordingly, the AUT-SLT test can be used as a repeatable and reliable test to find the shear stiffness values ​​in geosynthetic reinforced pavement samples.
 
 
 

کلیدواژه‌ها [English]

  • Shear Bonding
  • Shear stiffness
  • cyclic
  • Asphalt Overlay
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