Simplified Methodology for Fatigue Analysis of Reinforced Asphalt Systems

Author:

Orešković Marko1,Bohuš Štepan2,Virgili Amedeo3,Canestrari Francesco3

Affiliation:

1. University of Belgrade Faculty of Civil Engineering: Univerzitet u Beogradu Gradevinski fakultet

2. Saint-Gobain Recherche

3. Universita Politecnica delle Marche

Abstract

Abstract Fatigue analysis has an imporant role in evaluation the durability and performance of ashalt pavements, especially when new or alternative materials are used. Numerous laboratory studies have investigated fatigue performance with aim to estimate field behavior as closer as possible. Therefore, there are currently many different testing methods and data analysis approaches that can be used. One of the most common laboratory test methods is four-point bending beam (4PBB) test, which results are usually analyzed using the so-called traditional approach (where 50% of stiffness reduction is considered as failure criterion) or the energy ratio (ER) approach. However, outcomes from previous studies have shown that these approaches may not be appropriate and reliable if geogrids are used as a reinforcement. As a possible solution, this study proposes a new Simplified Flex Point (SFP) approach that considers the flex point of the strain amplitude curve, measured during 4PBB fatigue tests, to calculate the number of cycles to failure. These three approaches were applied on four sets of double-layered asphalt samples: one unreinforced and three reinforced with geogrids of different strength (50, 100 and 200 kN). The impact of reinforcement on the fatigue life was evaluated by comparing the critical strain values (ε6) of reinforced and unreinforced sets through fatigue resistance improvement factor (FRIF). The research findings showed that the use of geogrids improves fatigue life when the SFP and ER approaches are applied and that the traditional approach might not always be appropriate for assessing the fatigue resistance of reinforced asphalt mixtures.

Publisher

Research Square Platform LLC

Reference49 articles.

1. Koerner RM (2005) Designing with geosynthetics. Pearson Prentice Hall Upper Saddle River, NJ, USA

2. Functions and Applications of Geosynthetics in Roadways;Zornberg JG;Procedia Eng,2017

3. Glass and carbon geogrid reinforcement of asphalt mixtures;Zofka A;Road Mater Pavement Des,2017

4. Evaluation of carbon grid reinforcement in asphalt pavement;Lee SY;Constr Build Mater,2022

5. Evaluating the Fatigue Resistance of the Innovative Modified-Reinforced Composite Asphalt Mixture;Shafabakhsh G;Adv Civ Eng,2020

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3