New methodology to estimate the fatigue behavior of bituminous mixtures using a strain sweep test

Nieto, Ramón Botella; Jiménez, Félix Edmundo Pérez; Recasens, José Rodrigo Miró; Reguero, Adriana Haydée Martínez

doi:10.1016/j.conbuildmat.2016.12.190

Cited by 7 publications

(2 citation statements)

References 25 publications

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“…A review of the existing literature indicated that research into the stability of riparian revetment adopting vegetated bituminous mixtures is mostly limited to static loading conditions [ 23 , 24 , 25 , 26 , 27 ]. Existing review-based studies [ 28 ] have not sufficiently addressed the dynamic features of bituminous mixtures, especially under cyclic loading [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics and Failure Mechanism of Vegetated Revetment under Cyclic Loading

et al. 2019

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This research is focused on the dynamic behavior and failure mechanisms of an ecologically vegetated bituminous mixture applied in a riverbank revetment model. The dynamic bearing capacity of the vegetated riparian slope was evaluated. The dynamic soil pressure distribution and deformation were analyzed, followed by 3D elastic–plastic finite element modeling. Experimental results showed that the cumulative vertical settlement increased rapidly with the loading time. Vegetation added into bituminous mixtures was found to be effective in inhibiting the development of the vertical displacement of sand. The research described in this paper provides a theoretical basis and guidelines for the protection of riverbank slopes.

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Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics and Failure Mechanism of Vegetated Revetment under Cyclic Loading

et al. 2019

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“…It provides the maximum strain amplitude the material can sustain without permanent change to its properties, and the maximum strain amplitude it can endure under cyclic conditions before failing completely. These two strain values may be used to sketch an approximation of the fatigue law of the material [22]. The fatigue laws obtained through this procedure were compared with those obtained by applying the classical method based on time sweep tests, showing a good agreement between them [23,24].…”

Section: Introductionmentioning

confidence: 99%

Self-heating and other reversible phenomena in cyclic testing of bituminous materials

Nieto

Pérez-Jiménez

Riahi

et al. 2017

Construction and Building Materials

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This paper's objective is to evaluate the reversible phenomena that take place when asphalt materials are subjected to cyclic loads, i.e., self-heating and thixotropy. A strain sweep test was adapted to capture the stiffness variation of binders with the change in strain amplitude. The evolution of the internal temperature of the binder during the test was measured. Results show that the temperature can increase very significantly during cyclic testing and can account for a great part of all stiffness reduction captured during the test at different strain amplitudes. These results led to the conclusion that internal heating should be very important in asphalt mixtures as well. For that reason two types of time sweep tests were performed on the same mixture, with the introduction of rest periods in one of them long enough to let the inside temperature of the material lower after cycling. The results showed that the specimen that was allowed to cool down did not experience any loss of stiffness, while the specimen submitted to the conventional time sweep test failed in a few cycles. These results show the importance of the sequencing of loading and discourage the application of the Miner's law to estimate pavement life.Peer ReviewedPostprint (author's final draft

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DUSST: Development of a new stress sweep fatigue test for asphalt mixtures

Valdés-Vidal

Nieto

Pérez-Jiménez

et al. 2018

Construction and Building Materials

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Fatigue cracking is one of the main damage mechanisms that take place in asphalt pavements. However, its evaluation during the design stages of the asphalt mixtures is not usually considered due to the complexity of the tests required, their high costs and the long time needed to perform them. As a consequence, several research teams have been working on developing new test procedures to reduce the time and costs related to the fatigue characterization of asphalt mixtures. In this context, this paper presents the development of a new test procedure that consists of cyclic uniaxial tension-compression test in which the stress applied increases every 5,000 cycles. This way it is possible to evaluate the response of the mixture under cyclic loading at different stress levels in one test, and the failure of the mixture takes place in a shorter period of time than that required by the classical time sweep fatigue tests. This paper presents the results obtained in the application of this new methodology to a mixture frequently used in Chilean pavement structures (type IV-A-12 by Chilean standards) with three different asphalt binders, a conventional binder (CA-24), a high modulus binder (CA-HM) and a polymer-modified binder (CA-PM). Also, three different types of aggregates, obtained by two different shredding processes, were evaluated. The results achieved in the development of this Direct Uniaxial Stress Sweep Test (DUSST) show that it is a practical method with great potential. It allows fatigue behavior of asphalt mixtures at a shorter time to be characterized by means of important parameters, such as initial strain, failure strain, complex modulus and dissipated energy. In addition, a good sensitivity of the DUSST main parameters to variables evaluated was obtained.

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New methodology to estimate the fatigue behavior of bituminous mixtures using a strain sweep test

Cited by 7 publications

References 25 publications

Dynamic Characteristics and Failure Mechanism of Vegetated Revetment under Cyclic Loading

Dynamic Characteristics and Failure Mechanism of Vegetated Revetment under Cyclic Loading

Self-heating and other reversible phenomena in cyclic testing of bituminous materials

DUSST: Development of a new stress sweep fatigue test for asphalt mixtures

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