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Paper
Title

Assessment of Effect of Interlayer Interface and Type of Behavior of Materials on Lifetime of Flexible Pavements Using Mechanistic-Empirical Method

دومین کنفرانس بین المللی تحقیقات در عمران،معماری و شهرسازی و محیط زیست پایدار
Year: 1395
Publish place:
COI: CAUEM02_015
Language: EnglishView: 583
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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:

In analyzing multilayer systems, percentage of connection and continuity of different pavement layers is highly important. Flexible pavement layers are made of various materials and thicknesses due to economic considerations. In this paper, using Kenlayer by analyzing of the linear and nonlinear behavior of the base, sub-base, and subgrade layers, with an asphalt layer with invariant viscoelastic behavior to examine sensitivity of pavement design results in three pavement behavior models with interlayer interfaces in the following 4 states in terms of pavement lifetime and its damaging factors: a) full friction; b) lack of friction on the border between the asphalt and base layers; c) base/sub-base; d) base/sub-base/subgrade. Results revealed the direct effect of material behavior and interlayer interface on pavement lifetime. Therefore, by fully understanding the behavior of materials it is possible to design the most optimum interlayer interface. This method is economically effective. The highest concurrent positive effects of two factors belonged to Model 1 (grained) and Model 2 (fine-grained) in the order mentioned. The minimum negative effect also belonged to Model 2 (grained/ state c) and Model 3 (fine-grained/state d). In all of the designed behavioral models, group b led to a severe decline in pavement lifetime and caused failure

Keywords:

Paper COI Code

This Paper COI Code is CAUEM02_015. 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/529064/

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Salehipour Bavarsad, Niloufar and Hayati, Parham and Shabani, Shahin,1395,Assessment of Effect of Interlayer Interface and Type of Behavior of Materials on Lifetime of Flexible Pavements Using Mechanistic-Empirical Method,دومین کنفرانس بین المللی تحقیقات در عمران،معماری و شهرسازی و محیط زیست پایدار,https://civilica.com/doc/529064

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  • _ Michigan Department of Transportation (2015), Michigan DOT User Guide ...
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