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Paper
Title

Concurrent Assessment of Linear and Nonlinear Behavior of Sub-Base and Base Layers on Flexible Pavements with Mechanistic-Empirical Method

دومین کنفرانس بین المللی تحقیقات در عمران،معماری و شهرسازی و محیط زیست پایدار
Year: 1395
Publish place:
COI: CAUEM02_014
Language: EnglishView: 586
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Authors

Niloufar Salehipour Bavarsad - M.S. in Road and Transportation Engineering, Payameh Nour University,Tehran, Ira
Parham Hayati - Ph.D. in Road and Transportation Engineering, Iran University of Science and Technology(IUST), Tehran, Iran
Shahin Shabani - Assistant Professor, Faculty Member of Payameh Nour University, Tehran, Ira

Abstract:

A flexible pavement should be designed based on an understanding of behavioral characteristics of materials used in different layers of the pavement. The performance and strength of materials in the sub-base and base layers in transferring traffic load directly depends on the behavior of their materials. In this paper, using Kenlayer, by analyzing the linear and nonlinear behavior of the sub-base and base layers, which were constructed on a compacted subgrade soil layer with invariant linear behavior and a viscoelastic asphalt layer, sensitivity of pavement design results was examined in the following three models in terms of pavement lifetime, damaging factors, and effects of layer thickness and material type (granular/fine-grained) to economies the plan: a sub-base layer with linear behavior and a base layer with nonlinear behavior (model 1); a subbase layer with nonlinear behavior and a base layer with linear behavior (mode 2); both layers with nonlinear behavior (model 3). The longest pavement lifetime was 24.24 years, which belonged to Model 2, while the shortest pavement lifetime was 5.1 years, which belonged to Model 3. Depending on the arrangement of material behavior and layer thickness, the pavement damaging factor varies between ratio of damage with horizontal tensile strain bottom the asphalt layer and vertical compressive strain top the subgrade soil. By a change in thickness of layers different results are obtained from models. With an increase in the sub-base thickness in Model 1 and Model 3, and a decrease in the base and sub-base thicknesses in Model 2 it is possible to improve the lifetime and costs of the plan. However, use of fine-grained materials in Model 3 has no effects.

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Paper COI Code

This Paper COI Code is CAUEM02_014. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/529063/

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If you want to refer to this Paper in your research work, you can simply use the following phrase in the resources section:
Salehipour Bavarsad, Niloufar and Hayati, Parham and Shabani, Shahin,1395,Concurrent Assessment of Linear and Nonlinear Behavior of Sub-Base and Base Layers on Flexible Pavements with Mechanistic-Empirical Method,دومین کنفرانس بین المللی تحقیقات در عمران،معماری و شهرسازی و محیط زیست پایدار,https://civilica.com/doc/529063

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لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :

  • - Ameri, M. et al(2009), Development of m ech ani ...
  • _ Bhutta, S.A (1998), M echan istic-Empirical Pavement Design Procedure ...
  • -Gedafa, Daba S. (2006), Comparison of Flexible pavement performance using ...
  • _ Huang, Y.H (2004), Kenpave: A computer package for pavement ...
  • - Huang. Y.H (2010) , Kenpave software. ...
  • -Junior, F.E. et al (2005), Viscoelastic And Elastic Structural Analysis ...
  • -Kelly, P.(20 13), Solid Mechanics Lecture Notes, The University of ...
  • _ Michigan Department of Transportation (2015), Michigan DOT User Guide ...
  • -Muniandy, R. et al .(2013) , Comparison of Flexible Pavement ...
  • - Nidhi, M. et al (2013), Applications of Layered Theory ...
  • _ Yazdani Mahmood, Valizadeh (2015). An Overview of the Basic ...
  • - Zhang, L. et al (2015), Viscoelastic Model of Asphalt ...

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