Estimating asphalt binder fatigue at multiple temperatures using a simplified pseudo-strain energy analysis approach in the LAS test

Chen, Hui; Zhang, Yuan; Bahia, Hussain U.

doi:10.1016/j.conbuildmat.2020.120911

Cited by 36 publications

(16 citation statements)

References 10 publications

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“…Studies have stated that the fatigue cracking factor is inaccurate to describe fatigue resistance of asphalt [ 43 , 44 ]. Therefore, LAS test at 25 °C under 5% maximum strain was applied, and the fatigue performance parameter N f was obtained to represent the fatigue life of asphalt.…”

Section: Resultsmentioning

confidence: 99%

Effect of Carbon Black on Rutting and Fatigue Performance of Asphalt

Zhong

Fan

et al. 2021

Materials

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As an additive to improve the performance of asphalt binder, tire pyrolysis carbon black is gradually being used in road engineering, but the effect of carbon black (CB) with different particle sizes on asphalt modification remains to be further studied. In this study, three kinds of particle sizes and three kinds of contents of CB were used to modify asphalt, and different tests were conducted to research the high temperature performance and fatigue resistance of carbon black modified asphalt binder. It is found that the addition of CB can enhance the rutting resistance and medium temperature fatigue performance of virgin asphalt binder in general. However, for CB of 270 μm and 2.6 μm, its addition under certain contents lead to the decrease of high temperature performance and fatigue performance of the asphalt binder. For aged asphalt, the addition of CB decreases the rutting resistance and improves the fatigue resistance. The recommended content and particle size of CB are 2% and 2.6 μm. This study refines the complex effects of CB on asphalt properties, providing a reference for determining the size and content of CB in asphalt modification.

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Section: Resultsmentioning

confidence: 99%

Effect of Carbon Black on Rutting and Fatigue Performance of Asphalt

Zhong

Fan

et al. 2021

Materials

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“…Tests were conducted using the Discovery Hybrid Rheometer (HR-2, TA Instruments, New Castle, USA) at temperature of 20 °C, frequency of 10 Hz, and strain range from 0% to 30% (3100 loading cycles). The rupture criterion was defined as a 35% reduction in the |G*|·sin δ value of the intact material, as recommended by Chen, Zhang, and Bahia [ 50 ] and Chen and Bahia [ 51 ], thus obtaining the fatigue law (Nf = A(γ max ) B ) of asphalt matrices (reference and nanomodified). Samples were tested in duplicate, with a geometry of 8 mm in diameter and gap of 2 mm in height.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of the Rheological Behavior and the Development of Performance Equations of Asphalt Composites Produced with Titanium Dioxide and Zinc Oxide Nanoparticles

et al. 2023

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This research evaluated the rheological behavior of conventional asphalt binders modified with TiO2 and ZnO nanoparticles and proposed mathematical equations for performance prediction. First, composites were evaluated at high temperatures to investigate the Performance Grade (PG), non-recoverable creep compliance, and Aging Index (AI). Subsequently, the fatigue damage tolerance was determined at a temperature of 20 °C through the Linear Amplitude Sweep (LAS) test. At high temperatures, for both nanoparticles, stiffness gain was observed as the nanomaterial content increased, evidenced by the increase in the dynamic shear modulus. This resulted in an increase in the Performance Grade and reduction in non-recoverable creep compliance, leading to greater resistance to permanent deformations. Furthermore, it was found that nanoparticles were able to reduce the effects of oxidation of the asphalt matrix, corroborated by the reduction of the Aging Index (AI). Regarding the fatigue damage tolerance, for both nanoparticles, an increase in performance was observed at low deformation amplitudes and a decrease at high deformation amplitudes. Finally, the analysis of each rheological parameter allowed to define the mathematical equations capable of predicting the performance of conventional asphalt binders when modified with nano-TiO2 or nano-ZnO.

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“…The test temperature condition was 20 °C, 25 °C, and 30 °C respectively. The loading frequency changes logarithmically and varies in the range of 0.1–100 rad/s [ 26 , 38 ]. Then, the strain-controlled loading mode was used to carry out the LAS test, the amplitude range increases linearly from 0.1% to 30%.…”

Section: Methodsmentioning

confidence: 99%

“…The test results of LAS were analyzed using the S-VECD model, with Wang et al [ 32 ], Chen et al [ 38 ] and other researchers’ study as a reference for S-VECD model and its application in asphalt materials. The key formulas of this method are as follows.…”

Section: Methodsmentioning

confidence: 99%

Investigation on Preparation and Properties of Crack Sealants Based on CNTs/SBS Composite-Modified Asphalt

et al. 2021

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Crack is the main distress of asphalt pavement. Sealant is one of the most commonly used crack repair materials, and its performance is the key to affect the service life of asphalt pavements. In order to find an efficient modifier and optimize the performances of crack sealants. In this paper, carbon nanotubes (CNTs) and styrene-butadiene-styrene (SBS) were used as modifiers to prepare CNTs/SBS composite-modified asphalt crack sealant. The properties of the sealant were tested to evaluate its suitability for crack repair, which included the viscosity, softening point, resilience recovery, cone penetration, flow value, penetration, aging resistance, and fatigue resistance. The results showed that the conventional properties of the sealants meet the requirements of the specification. In addition, after heating aging, the elastic recovery rate of the sealant containing more CNTs decreased only slightly. The sealant containing 1 wt% CNTs exhibited a higher viscosity, fatigue resistance, thermal aging resistance.

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Estimating asphalt binder fatigue at multiple temperatures using a simplified pseudo-strain energy analysis approach in the LAS test

Cited by 36 publications

References 10 publications

Effect of Carbon Black on Rutting and Fatigue Performance of Asphalt

Effect of Carbon Black on Rutting and Fatigue Performance of Asphalt

Evaluation of the Rheological Behavior and the Development of Performance Equations of Asphalt Composites Produced with Titanium Dioxide and Zinc Oxide Nanoparticles

Investigation on Preparation and Properties of Crack Sealants Based on CNTs/SBS Composite-Modified Asphalt

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