Durability Evaluation Study for Crumb Rubber–Asphalt Pavement

Wang, Xuancang; Fan, Zhenyang; Li, Li; Wang, Hongyao; Huang, Minghui

doi:10.3390/app9163434

Cited by 19 publications

(7 citation statements)

References 46 publications

(45 reference statements)

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“…In this evaluation, as expected, the LEA sample with a TSR value of 0.62 showed high moisture sensitivity. Te low moisture resistance of this sample is due to the low viscosity of the asphalt binder, low quality of aggregate coating, and as a result, easier penetration of water due to the presence of many pores left in the bituminous coating because of the creation of water vapor during mixing [38]. By adding CR to LEA samples, the moisture resistance increased signifcantly, so that the application of 10% additive resulted in a 27% increase in TSR value in the LEA10 sample compared to the LEA sample without additive.…”

Section: Resultsmentioning

confidence: 99%

Effect of Crumb Rubber on the Moisture and Rutting Behavior of Low-Energy Asphalt and Determining the Best Flow Number Model

Moghimi

Shafabakhsh

Divandari

2023

Advances in Materials Science and Engineering

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The advancement of technology and the increasing growth of environmental threats have led experts in the field of transportation to find alternatives for hot mix asphalts (HMAs). One of these alternatives is low-energy asphalt (LEA) mixtures. LEA mixture consists of hot asphalt binder and coarse aggregates and wet sand, which, having a lower mixing temperature, has caused a significant reduction in energy consumption and pollutants emitted from asphalt binder. According to previous studies, the influence of crumb rubber (CR) on the rutting and moisture performances of LEAs has not been investigated so far. In this regard, due to the softness of this type of asphalt mixture and its weakness against rutting and moisture, in this study, as an innovation, CR was used to modify LEA mixtures in three weight percentages of 10, 15, and 20. Considering the high moisture sensitivity of LEA mixtures due to the presence of water, the ability of CR to overcome this weakness and its potential to be replaced with antistriping additives were also investigated using the indirect tensile strength (ITS) test. In addition, in order to evaluate the rutting resistance, LEA mixtures were subjected to the dynamic creep test at a temperature of 54.4°C and at two stress levels of 270 and 310 kPa. According to ITS test results, it was found that although the modified LEA mixtures with 10 and 15% CR met the minimum requirement, the tensile strength ratio (TSR) value recorded for mentioned mixtures was still lower than that for HMA. Therefore, it is recommended to use antistripping additives in the use of LEA-containing CR, especially in areas with a high probability of moisture damage. The results of creep curves and flow numbers (FNs) extracted from four different models of three-stage, Fnest, Francken, and stepwise showed that although the LEA sample without additive had lower rutting resistance than HMA, the modification of this mixture to 15% CR significantly increased the rutting resistance. Moreover, considering the variety of variables in the process of making LEA compared to HMA, the comparison of FN determination models and the introduction of the most stable model were conducted in this research. According to the laboratory and statistical analysis results, it was found that the Francken model had less sensitivity to the variables, so it is suggested to determine FN for LEA mixtures.

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Section: Resultsmentioning

confidence: 99%

Effect of Crumb Rubber on the Moisture and Rutting Behavior of Low-Energy Asphalt and Determining the Best Flow Number Model

Moghimi

Shafabakhsh

Divandari

2023

Advances in Materials Science and Engineering

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“…Metode durability index (DI) dikembangkan dengan perendaman air suhu 60 o C hingga 14 hari [20]. Evaluasi adhesi antara crumb rubber dan aspal digunakan untuk uji keawetan campuran aspal crumb rubber [21].…”

Section: Keawetan Bahan Perkerasan Jalanunclassified

Implementation of Palm Oil Waste Nano Technology to Increase the Durability of Road Pavement Materials: Proposed Research Roadmap

Sunarjono¹,

Ngafwan²

2022

UJE

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Many road pavements using asphalt mixtures in Indonesia are found to be not durable, especially heavy traffic roads. Even road damage often occurs early before the service life is reached. Many efforts have been made to improve the strength and durability of the mixture, but have not been effectively. For example, the use of fillers can increase the strength and durability of the mixture significantly, but its performance at low temperatures has an impact on the risk of hardening and cracking. The research objective is to propose the idea of implementing nanotechnology for palm oil waste materials to increase the durability of road pavement materials based on the research roadmap developed. The method used is through five approaches, namely: (i) review of research results on the durability of road pavement materials, (ii) review of research results on the implementation of nanotechnology in road pavement materials, (iii) research gaps, (iv) research ideas, and, (v) proposed research roadmap. A research roadmap for the implementation of nanotechnology to improve the durability of road pavement materials has been prepared. The substance of the research roadmap proposes three ideas, namely maximizing the function of nanomaterials as: (i) anti-aging agent, (ii) protecting water infiltration into the body of the asphalt mixture, and (iii) bonding agent between asphalt-aggregate.

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“…• Cryogenic grinding: In this process, the hammer mill is used to break the rubber into fine pieces with a small surface area after it has been frozen to make it more brittle by liquid nitrogen (Neto et al, 2006). Image of rubber crumbs taken with an electron microscope at different magnifications (100, 500, and 2000 times magnification) shown in the Figure (Wang et al, 2019). Furthermore, mixing ground tire rubber in asphalt pavements can be accomplished in two ways:…”

Section: Overview Of Asphalt Rubber (Ar)mentioning

confidence: 99%

Performance evaluation of Asphalt Rubber Gap-graded mixture

Alhelyani

Zhang

2021

Nat. App. Sci. Int. J.

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One of the most successful means of improving paving performance is by the use of Crump Rubber (CR). Increased demand for Asphalt Rubber Gap-graded (AR-Gap) mixtures as a pavement material has resulted from improvements in the basic asphalt binder as well as environmental advantages and improved performance in recent years. A number of agencies and researchers conducted AR-Gap mix studies to evaluate the design and performance of AR-Gap mixtures. In this study, the most recent research and practices in the design of AR-Gap mixtures were reviewed, and the performance characteristics of these mixtures were also summarized. In addition, the positive effect of adding ground rubber on the performance of the mixtures, including the effect on fatigue cracking, drainage, moisture susceptibility and permanent deformation is also reviewed. In conclusion, future aims in the building of AR-Gap pavement and performance potential were discussed, which will assist it in becoming a viable long-term pavement choice in the future. Based on the results of the evaluation process, it was discovered that there is still potential to improve the current design state of AR-Gap mixtures as well as the effect of rubber inserts in improving the performance of the mix.

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Durability Evaluation Study for Crumb Rubber–Asphalt Pavement

Cited by 19 publications

References 46 publications

Effect of Crumb Rubber on the Moisture and Rutting Behavior of Low-Energy Asphalt and Determining the Best Flow Number Model

Effect of Crumb Rubber on the Moisture and Rutting Behavior of Low-Energy Asphalt and Determining the Best Flow Number Model

Implementation of Palm Oil Waste Nano Technology to Increase the Durability of Road Pavement Materials: Proposed Research Roadmap

Performance evaluation of Asphalt Rubber Gap-graded mixture

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