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      A new dynamic apparatus for asphalt mix fatigue and stiffness modulus: development, validation and numerical simulations

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          Abstract

          ABSTRACT The main aim of this paper is to describe the development and validation of a new test apparatus for measuring complex stiffness modulus and fatigue of asphalt mix, so-called FADECOM. Both evaluations are executed with cyclic loading and continuous modes, in order to demonstrate the effectiveness of test results when applied to asphalt pavement design solutions. Results obtained with the new apparatus are compared to existing methods designed on the same mechanical principles, and which are already calibrated and taken as international standardized references. Methods presented in this paper are based on Discrete Fourier Transform (DFT) analysis of data recorded by the test apparatus; a parametric code which executes the analysis was implemented in C++. Interlaboratory comparisons of test results with FADECOM indicate random deviations of approximately 3 microstrains (x 10-6 µdef) for determination of fatigue strain at 106 cycles, and less than 10% relative difference for complex stiffness modulus. Agreement with FADECOM demonstrates direct applicability of the new method for obtaining accurate data for dynamic numerical simulations comprising asphalt pavement design.

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          Most cited references38

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          Fatigue resistance and cracking mechanism of concrete pavements reinforced with recycled steel fibres recovered from post-consumer tyres

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            Stiffness testing for bituminous mixtures

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              Characterizing fatigue behavior of asphalt mixtures utilizing loaded wheel tester

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                Author and article information

                Journal
                rmat
                Matéria (Rio de Janeiro)
                Matéria (Rio J.)
                Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro; em cooperação com a Associação Brasileira do Hidrogênio, ABH2 (Rio de Janeiro, RJ, Brazil )
                1517-7076
                2022
                : 27
                : 1
                : e13130
                Affiliations
                [04] Santos São Paulo orgnamePetrobrás orgdiv1Departamento de Engenharia de Produção Brasil
                [02] Bouguenais Cedex orgnameUniversité Gustave Eiffel France
                [01] Joinville Santa Catarina orgnameUniversidade Federal de Santa Catarina orgdiv1Departamento de Engenharias da Mobilidade Brazil
                [03] Santa Barbara orgnameUniversity of California orgdiv1Department of Physics United States
                Article
                S1517-70762022000100304 S1517-7076(22)02700100304
                10.1590/s1517-707620220001.1330
                36953c0d-bd3d-4957-9e1c-9360592bd523

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 12 February 2020
                : 10 May 2021
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 38, Pages: 0
                Product

                SciELO Brazil

                Categories
                Articles

                Rheological-mechanical performance evaluation,Complex modulus,Fatigue,Asphalt mix,Pavement design

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