Variability of the mechanical properties of Reclaimed Asphalt Pavement (RAP) obtained from different sources

Montañez, Juliana; Caro, Silvia; Carrizosa, Daniel R.; Calvo, Alejandro; Sanchez, X

doi:10.1016/j.conbuildmat.2019.116968

Cited by 42 publications

(18 citation statements)

References 13 publications

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“…Tremendous studies have been conducted to investigate the effect of RAP on the performance of asphalt mixtures, especially on cracking resistance. Zhou's research [12] pointed out that the use of RAP increased the cumulative rate of fatigue damage, subsequently resulting in shortened fatigue life of asphalt mixtures, which has been proved by some other investigations [13,14]. The use of RAP also further diminished the low-temperature property of asphalt mixtures, and commonly made the mixtures prone to thermal cracking [9,15], especially in cold regions.…”

Section: Introductionmentioning

confidence: 95%

Performance Characterization of Hot Mix Asphalt with High RAP Content and Basalt Fiber

Zhang

et al. 2020

Materials

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Incorporating reclaimed asphalt pavement (RAP) into asphalt mixtures achieves astonishingly environmental and economic benefits. However, there is hesitation to use higher RAP content due to the concern regarding the deterioration in pavement performance, especially the cracking resistance. Basalt fiber has been considered an effective additive to reinforce the performance of asphalt mixtures and, subsequently, the reinforcement effect is also expected for high-RAP content mixtures. Therefore, this study investigated the effect of basalt fiber on the pavement performance of asphalt mixtures with 0%, 30%, 40%, and 50% RAP contents against high-temperature performance, moisture susceptibility, low-temperature and intermediate-temperature cracking resistance, based on the wheel-tracking test, the uniaxial penetration test, the freeze-thaw splitting test, the low-temperature bending beam test, the semicircular bend fracture test and the indirect tensile asphalt cracking test, respectively. In addition, a performance-space diagram was developed to determine the mixture performance shift caused by basalt fiber. The results showed that adding basalt fiber compensated for the detrimental effect caused by RAP, leading to significant enhancement in moisture susceptibility and low- and intermediate-temperature cracking resistance of mixtures with high RAP content, along with the enhancement in high-temperature performance, indicating that basalt fiber can contribute to the use of high RAP content.

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Section: Introductionmentioning

confidence: 95%

Performance Characterization of Hot Mix Asphalt with High RAP Content and Basalt Fiber

Zhang

et al. 2020

Materials

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“…Many studies have been conducted on the variability and differences in the properties of asphalt-binders and the relation with HMA field performance has been studied by many researchers [2,4,5,27]. However, the literature reviewed is limited with respect to studies on the impacts of different sources and suppliers on the ductility and ER properties of asphalt-binders.…”

Section: Literature Reviewmentioning

confidence: 99%

Statistical Evaluation of the Material‐Source Effect on the Ductility and Elastic Recovery (ER) of Plant‐Mix Extracted Asphalt‐Binders

Walubita

Martínez-Arguelles

Chunduri

et al. 2020

Advances in Civil Engineering

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This study was conducted to quantitatively and statistically evaluate the effects of material source on the ductility of asphalt-binders, measured in terms of the elastic recovery (ER) property. The ER data used in the study were excerpted from the Texas flexible pavements and overlays database, namely, the Texas Data Storage System (DSS), covering plant-mix extracted PG XX-22 asphalt-binders (i.e., rolling thin film oven (RTFO) residues) from 20 different sources and measured using the Ductilometer test at 10°C. The findings of the study indicated that material source has an impact on the ER property of asphalt-binders. Statistically significant differences were observed among some sources and suppliers that reported the same low-temperature asphalt-binder type/grade (i.e., PG XX-22). Overall, the study contributes to enriching the literature on the material-source effects on asphalt-binders’ ER properties, consistency, variability, and data quality. In particular, the study highlights the sensitivity nature of the asphalt-binder ER parameter to material-source effects.

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“…Many studies (mostly on original unaged ABs) have been carried out on the variability and differences in the rheological properties of different ABs in relation to their ultimate effects on the properties and behavior of HMA mixes [ 11 , 13 , 15 , 17 ]. However, based on the literature reviewed, there are limited efforts on the influence of the sources and providers on the rheological properties of ABs, particularly on plant-mix recovered ABs and RTFO residues (i.e., AB subjected to short-term aging).…”

Section: Literature Reviewmentioning

confidence: 99%

“…This test essentially compares if the differences in the means (Avg) of each source-pair are greater than the expected standard error from all the other pairs for the PG 76-22 AB sources. One advantage of the Tukey Post Hoc Test over ANOVA analysis is that it greatly reduces Type I errors (i.e., rejection of a true null hypothesis) [ 17 ]. A “True-False” methodology was proposed to denote that the differences in the rheological properties under evaluation between each pair of the AB source were high enough to be considered statistically different.…”

Section: Statistical Analyses and Material-source Effectsmentioning

confidence: 99%

Statistical Evaluation of the Material-Source Effects on the DSR Rheological Properties of Plant-Mix Extracted Asphalt-Binders

et al. 2021

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The work presented in this paper was carried out to statistically evaluate and quantify the material-source effect on the asphalt-binder’s rheological properties using Analysis of Variance (ANOVA) and Tukey’s Honestly Significant Difference (Tukey´s HSD) test. The study focused on the Asphalt-Binders’ high-temperature rheological properties, namely, the G*, δ, G*/Sin(δ) and G*/(1 − (1/Tan(δ)Sin(δ))) parameters, measured using the Dynamic Shear Rheometer (DSR) device. The DSR data analyzed in the study were extracted from the Texas flexible pavements and overlays database, namely, the Texas Data Storage System (DSS), covering two Asphalt-Binders (ABs), performance grade (PG) 64-22 and PG 76-22 plant-mix extracted ABs that were treated as rolling thin film oven (RTFO) residue, and sourced from 14 different suppliers. The study findings substantiate that material-source has an effect on the high-temperature rheological properties of ABs. Additionally, it was also concluded that in as much as performance superiority and costs are crucial issues in deciding the AB source/provider, consistency and quality aspects cannot be disregarded. Therefore, material-source effects should be inclusively evaluated from both performance (rheological properties) and quality (consistence) standpoints as well as cost considerations when choosing a supplier. In general, the study contributes to the state-of-the-art enrichment on aspects of material-source effects on RTFO residue ABs’ high-temperature rheological properties, consistency, variability, and data quality.

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Variability of the mechanical properties of Reclaimed Asphalt Pavement (RAP) obtained from different sources

Cited by 42 publications

References 13 publications

Performance Characterization of Hot Mix Asphalt with High RAP Content and Basalt Fiber

Performance Characterization of Hot Mix Asphalt with High RAP Content and Basalt Fiber

Statistical Evaluation of the Material‐Source Effect on the Ductility and Elastic Recovery (ER) of Plant‐Mix Extracted Asphalt‐Binders

Statistical Evaluation of the Material-Source Effects on the DSR Rheological Properties of Plant-Mix Extracted Asphalt-Binders

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