Development of a Predictive System for Estimating Fatigue Life of Asphalt Mixtures Using the Indirect Tensile Test

2012 ◽  
Vol 138 (12) ◽  
pp. 1530-1540 ◽  
Author(s):  
Jaeseung Kim ◽  
Chulseung Koh
2015 ◽  
Vol 19 (2) ◽  
pp. 89
Author(s):  
Carlos Hernando Higuera Sandoval ◽  
Xiomara Vanessa Camargo Amaya ◽  
Edwin Alexander Suárez Molano

This article presents the results of the analysis of the effect of aging on the properties of asphalt and asphalt mixtures. The objective of this study was to compare the properties of the original asphalt and aged asphalt and the dynamic modulus of asphalt mixtures. The long-term aging was simulated by using Pressure Asphalt Vessel (PAV). Marshall and RAMCODES methodologies were used to determine the formula of work; values of dynamic modulus of designed mixtures were obtained by the indirect tensile test, using the Nottingham Asphalt Tester (NAT). The results showed an increase in the rigidity of the aged asphalt. Also, an increase of the stability and a decreased flow in the mixtures made with this type of binder was found. The dynamic modulus values of the mixtures containing aged asphalt showed an increase up to three times compared with those elaborated with original asphalt mixtures.


2011 ◽  
Vol 39 (4) ◽  
pp. 102484
Author(s):  
M. R. Mitchell ◽  
R. E. Link ◽  
Xinjun Li ◽  
Mihai O. Marasteanu ◽  
Joseph F. Labuz ◽  
...  

TRANSPORTES ◽  
2008 ◽  
Vol 16 (1) ◽  
Author(s):  
Lélio Antônio Teixeira Brito ◽  
Jorge Augusto Pereira Ceratti ◽  
Daniel Ramos Victorino

<p>Os ensaios de compressão diametral são amplamente usados no Brasil para determinação das propriedades mecânicas de misturas asfálticas, tanto através de ensaios monotônicos para determinação da resistência à tração, quanto sob carregamentos cíclicos para determinação do módulo de resiliência e da vida de fadiga. Este trabalho teve como objetivo mostrar que com instrumentação adequada destes ensaios, indicadores adicionais àqueles usualmente determinados podem ser obtidos. A energia mobilizada durante o ensaio de resistência à tração, bem como o monitoramento da rigidez ao longo do ensaio de fadiga e a defasagem medida entre o pulso de carga e o deslocamento no ensaio de módulo de resiliência, mostram-se promissores para este propósito.</p><p><em><strong>Abstract</strong> Indirect tensile test (IDT) are broadly used in Brazil for the assessment of mechanical properties of asphalt mixes, not only under monotonic loading to determine the tensile strength, but also under cyclic loading to determine resilient modulus and fatigue life. This study tries to demonstrate that with adequate instrumentation of these tests, additional indicators to those usually determined are possible to be obtained. The mobilized energy during the IDT test, as well as the monitoring of the stiffness during the fatigue test and the phase lag measured between load and displacement pulses in the resilient modulus test are promising for this purpose. </em></p>


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