Comparative evaluation of fatigue resistance of warm fine aggregate asphalt mixtures

Sadeq, Mohammed; Al-Khalid, Hussain; Masad, Eyad; Şirin, Okan

doi:10.1016/j.conbuildmat.2016.01.045

Cited by 24 publications

(6 citation statements)

References 12 publications

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“…Compared with the fracture tests for asphalt mixture samples [12] [13], the tests for asphalt mortar samples have some advantages, such as material saving, lower test variability, and easier sample preparation [14]. The mix design of mortar varies in terms of Nominal Maximum Aggregate Size (NMAS), asphalt content and air void distribution based on different hypotheses.…”

Section: Introductionmentioning

confidence: 99%

Feasibility and performance of the Semi-circular Bending test in evaluating the low-temperature performance of asphalt mortar

Yang

Jiang

Leng

et al. 2021

Construction and Building Materials

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Section: Introductionmentioning

confidence: 99%

Feasibility and performance of the Semi-circular Bending test in evaluating the low-temperature performance of asphalt mortar

Yang

Jiang

Leng

et al. 2021

Construction and Building Materials

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“…In order to achieve this, a three-point bending test (Figure 3) was performed with DMA Discovery HR 30™ equipment from TA Instruments™ (New Castle, DE, USA) on the prismatic specimens previously referred to. The use of this type of configuration instead of the most commonly used torsional one [12,17,18] allows bringing the material characterization closer to the methods commonly used in fatigue characterization at the level of mixtures such as UGR-FACT [29], 3-point fatigue test [30], and 4 point-bending test [31], among others. This new test allows the assessment of ductility, stiffness, and the fatigue response of the mortar, enhancing the comprehension about the influence of the finest fraction of aggregates and mastic components on the mechanical resistance of the material [19].…”

Section: Testing Planmentioning

confidence: 99%

“…are carried out at different frequencies and temperatures to characterise the viscoelastic properties of the material, its recovery capacity, and fatigue resistance [15]. According to their results, the analysis of asphalt mortars has been shown to be a viable method since it deals with the problem of the heterogeneous composition of asphalt mixtures through the characterization of a more homogeneous material (i.e., FAM) [16,17]. This makes it possible to examine the precise influence of different fillers or even polymermodified binders, since it enables the analysis of the maximum specific surface of asphalt mixtures.…”

Section: Introductionmentioning

confidence: 99%

Influence of Type of Filler and Bitumen on the Mechanical Performance of Asphalt Mortars

et al. 2022

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This article presents a new methodology of analysis based on a fast-running experimental procedure to characterise the mechanical response of asphalt mortars in terms of stiffness, ductility, and fatigue resistance. This was achieved using the DMA (Dynamic Mechanical Analyser) three-point bending configuration. The study was carried out by considering the employment of different types of fillers such cement and CaCO3 and different types of binders such as conventional asphalt binder (B35/50) or modifided polymer-modified bitumen (PMB 25/55–65). From the results of this study, the filler was found to have a greater influence on the stiffness and ductility of the asphalt material, while bitumen had a higher effect on the fatigue life of the asphalt mortar. Fatigue life was observed to increase with the use of a polymer-modified binder, while a lower degree of permanent deformation and higher bearing capacity achieved by the use of cement instead of calcium carbonate as active fillers.

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“…Similar to the asphalt binder and asphalt mixture, the complex shear modulus G* is the ratio of stress and strain applied to asphalt mortar under dynamic load conditions. According to the size of asphalt mortar, the G* index value of asphalt mortar can be accurately obtained through a frequency scanning test conducted by dynamic shear rheometer (DSR) [13]. In the literature, a 0.01% strain is recommended as the linear viscoelastic boundary limit of asphalt mortar.…”

Section: Introductionmentioning

confidence: 99%

Correlation between the Rheological Properties of Asphalt Mortar and the High-Temperature Performance of Asphalt Mixture

Shi

et al. 2023

Coatings

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The performance of an asphalt mixture is significantly affected by the properties of its asphalt mortar, which consists of an asphalt binder, mineral fillers, fine aggregates and air voids. The aim of this work was to evaluate the correlations between the high-temperature performance of an asphalt mixture and the rheological properties of its corresponding asphalt mortar. The multisequence repeated loading (MSRL) test was used to estimate the high-temperature performance of the asphalt mixture. Six different gradations, AC-13, SMA-13, SUP-13, AC-20, SUP-20 and AC-25, and two styrene–butadiene–styrene (SBS)-modified asphalt binders were considered and used to prepare the asphalt mixture specimens. The gradations and asphalt types of asphalt mortars were consistent with their asphalt mixtures. A modified multiple-stress creep–recovery (MSCR) test was proposed for evaluating the rheological properties of asphalt mortar with a dynamic shear rheometer (DSR). Based on the basic form of the Hirsh model, a multiple regression model was established, and its coefficient of determination (R-square) was 0.96. The rheological response of the asphalt mortar presented great correlation with the high-temperature behaviour of the asphalt mixture. In addition, the MSCR indicators (nonrecoverable compliance and percent recovery) obtained at 12.8 kPa creep stress represented the rheological status of asphalt mortar in asphalt mixture well. Therefore, the mechanical behaviours of asphalt mixture at high temperature could be accurately predicted by the MSCR indicators of asphalt mortar and its coarse aggregate parameters.

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Comparative evaluation of fatigue resistance of warm fine aggregate asphalt mixtures

Cited by 24 publications

References 12 publications

Feasibility and performance of the Semi-circular Bending test in evaluating the low-temperature performance of asphalt mortar

Feasibility and performance of the Semi-circular Bending test in evaluating the low-temperature performance of asphalt mortar

Influence of Type of Filler and Bitumen on the Mechanical Performance of Asphalt Mortars

Correlation between the Rheological Properties of Asphalt Mortar and the High-Temperature Performance of Asphalt Mixture

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