Laboratory investigation of rutting performance of warm mix asphalt containing high content of reclaimed asphalt pavement

Behbahani, Hamid; Ayazi, Mohamad Javad; Moniri, Ali

doi:10.1080/10916466.2017.1316738

Cited by 47 publications

(7 citation statements)

References 13 publications

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“…Recently, numerous studies have been conducted on warm mix asphalt technologies wherein the utilization of various forms of additives. For instance, Nano-technology ZycoTherm was proposed as a silanebased anti-striping agent, which has the potential to minimize temperatures without negatively affecting the compaction at low-temperature levels [20]. Ziari et al, [21] studied the features of ZycoTherm-modified binders through physical and rheological assessments of asphalt.…”

Section: Introductionmentioning

confidence: 99%

Rheological Performance of ZycoTherm/Nano-Silica Composite Modified Binders at High and Low Temperatures

Ali‬

ALOTHMAN

Gökçekuş

2023

Turkish Journal of Civil Engineering

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This study aims to investigate the impact of control and warm mix binders modified with Nano-Silica on the asphalt binder functioning to resist rutting endurance and low-temperature cracking. According to asphalt binder weight, the percentages of Nano-Silica employed in this research were 2%, 4%, and 6%. The control and modified binders were evaluated by performing conventional and rheological tests. The rheological properties were examined by master curves, isochronal plots, multiple stress creep recovery (MSCR), Superpave rutting parameter, and bending beam rheometer. The outcomes implied that the performance of the asphalt binder (with or without ZycoTherm) improved when Nano-Silica was added concerning (G*/sin δ) parameter. The MSCR test demonstrated that the recovery (R %) of the control and warm mix binders improved whereas the non-recoverable creep compliance (Jnr) dropped, implying that Nano-Silica boosted the rutting potential. Moreover, it was observed at different temperatures that the values for the complex shear modulus raised when the phase angle values were reduced. Furthermore, at low temperatures, it is presumed that the performance of Nano-Silica modified asphalt binders will have minimal performance as opposed to the binders prepared with ZycoTherm, which prevents low-temperature cracking.

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Section: Introductionmentioning

confidence: 99%

Rheological Performance of ZycoTherm/Nano-Silica Composite Modified Binders at High and Low Temperatures

Ali‬

ALOTHMAN

Gökçekuş

2023

Turkish Journal of Civil Engineering

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“…Similarly, regarding the rutting resistance of asphalt mixtures, rut depth is a parameter that is used for evaluating this performance. Accordingly, rutting has been investigated in various studies with tests including wheel tracking and asphalt pavement analyzer tests [14][15][16][17][18][19]. These laboratory tests generally showed that increasing the RAP content in mixtures increased the stiffness of mixtures and improved their rutting resistance but clearly did not specify the effects of the mixture components on the behavior of RAP mixes.…”

Section: Introductionmentioning

confidence: 99%

A New Ensemble Prediction Method for Reclaimed Asphalt Pavement (RAP) Mixtures Containing Different Constituents

et al. 2023

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Fatigue and rutting are two common damage types in asphalt pavements. Reclaimed asphalt pavement (RAP), as a sustainable approach in the pavement industry, deals with the foregoing damage. Fatigue and rutting characteristics of asphalt pavement are generally assessed using laboratory tests, taking a long time and consuming significant amounts of raw material. This study aims to propose a novel approach for predicting fatigue and rutting performance of RAP mixtures. A new ensemble prediction method, named COA-KNN, is introduced by combining the coyote optimization algorithm and K-nearest neighbor to increase the accuracy of fatigue and rutting prediction. In order to evaluate the accuracy, the proposed method was compared against robust prediction methods, including random forest (RF), gradient boosting (GB), decision tree regression (DT), and multiple linear regression (MLR). Afterward, the influence of each variable on the mentioned damages is examined, and the variables are ranked based on their relative influence on the mentioned damages. The results suggest that COA-KNN outperformed other prediction techniques when comparing different performance indicators. Total binder content in asphalt mixes and the PG span of the virgin binder added to the recycled asphalt mixture had the highest relative influence on fatigue and rutting performance, respectively.

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“…Moisture has a higher chance of penetrating RAP-containing mixes and destroying the binder's cohesion and adherence to aggregates more quickly. As a result, evaluating the performance of WMA mixes including RAP in the presence of moisture is essential [11][12][13]. Polymer matrix composites can use basalt fibre instead of glass fibre as a potential polymer reinforcing material.…”

Section: Introductionmentioning

confidence: 99%

The study on potential use of RAP in WMA pavement layers with the inclusion of Basalt Fibers for the effect of mechanical and moisture Performance

Mamatha¹,

Adepu²

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Pavement engineers are facing difficulties for optimizing the use of natural resources and minimizing the consumption fuel involved in the manufacturing process of Hot Mix Asphalt (HMA). As a matter of fact the preparation of HMA involves in the release of harmful gases and to prevent, researches are working towards improving the environmental effects. Warm mix asphalt (WMA) is one of the solutions to increase the pavement performance with a concern to environmental effects that has gained a lot of popularity. In the present study, laboratory investigations were carried for the evaluation of laboratory prepared WMA mixes containing Reclaimed Asphalt Pavements (RAP) and with the inclusion of fiber at different proportion. This method of mix modification will not only lower the energy consumption but also reduce the release of harmful gases as observed in HMA mix proportions. Nevertheless the above mix combinations are intended to achieve sustainable pavement construction practices. The purpose of this research is to look into the effect of using RAP in modified mixes on mechanical and durability proportions in order to evaluate the effect of partial replacement of BC grade-2 WMA mixtures.. In this work, the effectiveness of basalt fibre modified bitumen mixtures was also examined using fibre in various amounts. Compaction test on binder modification, moisture damage, indirect tensile strength tests, and Marshall test effects on RAP, WMA mixes were used to assess the performance of binder modification, RAP, and fibre modified mixes. The laboratory test results indicated that the asphaltene proportions were shown better results at 3%WMA binder prepared with sasobit, a wax compound. The WMA asphalt mix prepared with RAP at 20% and with 0.6% of basalt fiber has provided better performance compared with the WMA mixes alone. This will certainly minimize the environmental effects through energy reduction and improved mechanical properties along with the durability performance.

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Laboratory investigation of rutting performance of warm mix asphalt containing high content of reclaimed asphalt pavement

Cited by 47 publications

References 13 publications

Rheological Performance of ZycoTherm/Nano-Silica Composite Modified Binders at High and Low Temperatures

Rheological Performance of ZycoTherm/Nano-Silica Composite Modified Binders at High and Low Temperatures

A New Ensemble Prediction Method for Reclaimed Asphalt Pavement (RAP) Mixtures Containing Different Constituents

The study on potential use of RAP in WMA pavement layers with the inclusion of Basalt Fibers for the effect of mechanical and moisture Performance

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