Leaching and mechanical performance of rubberized warm mix asphalt modified through the chemical treatment of hazardous waste materials

Mahpour, Alireza; Alipour, Shaghayegh; Khodadadi, Mojtaba; Khodaii, Ali; Absi, Joseph

doi:10.1016/j.conbuildmat.2022.130184

Cited by 8 publications

(3 citation statements)

References 57 publications

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“…The regeneration process for short-term aged crumb rubber modified asphalt (CRMA) involves reversing the aging effects, while the regeneration of long-term aged CRMA involves repairing internal structural damage, enhancing integrity, and improving thermal stability. It reveals that regeneration alleviates the selfaggregation of asphaltene in aged CRMA and improves the ordering of the colloidal structure [20]. Results of the leaching assessment indicate that the long-term environmental impact of hazardous materials of warm mix asphalt (WMA) is negligible [21].…”

Section: Literature Reviewmentioning

confidence: 99%

Effect on stability of asphalt using COVID-19 single use face mask and saline tube waste

2023

IJATEE

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Highway infrastructures play an important part in local and international studies of emerging metropolitan cities because of their direct and indirect impact on urban expansion, environmental issues, and socioeconomic challenges.Transverse and longitudinal fractures, potholes, and subgrade deformation in flexible pavement result from the higher rate of vehicle addition on the roads to the space of road building. Due to an increase in the number of vehicles on the road, flexible pavements have developed cracks and deformations below the subgrade [1]. *Author for correspondence Different types of waste plastic bottles and optimizing the percentage of additive for improved performance of the asphalt [2].The effects of waste polymer modification on the performance and sustainability of asphalt mixtures. Their findings indicated improved resistance to fatigue cracking and reduced environmental impacts, particularly in terms of energy consumption and carbon emissions [3]. Incorporating disposable medical masks (DMM) enhanced the high and lowtemperature performance of the asphalt, leading to improved complex modulus, rotational viscosity, and tensile elongation. Furthermore, the addition of DMM fibers improved the moisture susceptibility, rutting resistance, and cracking resistance of the asphalt

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Section: Literature Reviewmentioning

confidence: 99%

Effect on stability of asphalt using COVID-19 single use face mask and saline tube waste

2023

IJATEE

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“…Reports indicate that more than 208 million tons of waste cooking oil (WCO) and 400 million tons of waste engine oil (WEO) are produced annually, of which only 40% are recycled [9,[19][20][21][22]. Improper disposal of these materials causes environmental pollution; one liter of WEO can contaminate one million liters of fresh water [19,23].…”

Section: Introductionmentioning

confidence: 99%

Carbon Sequestration via Bituminous Composites Containing Recycled High-Density Polyethylene

Sadeghi,

Goli,

Fini

2024

J. Compos. Sci.

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This paper presents an innovative bituminous composite containing recycled high-density polyethylene (HDPE) as a means of carbon sequestration. To prepare the composite, rejuvenators and recycled HDPE were introduced to reclaimed asphalt pavement (RAP), separately and in combination. To evaluate efficacy of rejuvenators, this study used the following three rejuvenators: waste engine oil (WEO), oleic acid (OA), and vacuum bottom (VB). The performance of the bituminous composite containing HDPE and rejuvenators was evaluated using the indirect tensile fatigue test, the rutting resistance test, the resilient modulus test, and the semi-circular bending test. Results showed that applying a combination of rejuvenators and recycled HDPE improved the resistance to fatigue, rutting, and cracking. Particularly, in terms of improving resistance to cracking, OA proved to be the most effective rejuvenator, followed by WEO and VB. In all bituminous composites studied here, the hybrid application of HDPE and rejuvenator proved to be more effective than the rejuvenator or HDPE alone.

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“…Moreover, the asphalt agglomeration phenomenon also often occurs, affecting the rheological properties of the asphalt, causing it to be no longer suitable for improving the anti-stripping performance in a large number of asphalt mixtures. In addition, other researchers have found that polymers, such as polyethylene [ 9 ] and polyvinyl chloride [ 10 ], may also be beneficial in improving the water resistance of asphalt mixtures. However, they have not been used as the main means to improve the moisture susceptibility of asphalt because of their weak anti-stripping performance and the effect on the other properties of asphalt binders.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Physicochemical Properties of Asphalt Modified by Different Anti-Stripping Agents and Their Moisture Susceptibility with Aggregates

Chen

et al. 2023

Materials

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Erosion and the stripping effect of moisture on asphalt mixtures is one of the main reasons for the shortened service life of asphalt pavements. The common mean of preventing asphalt pavements from being damaged by moisture is adding anti-stripping agents (ASAs) to asphalt mixtures. However, the effect regularity and mechanism of anti-stripping agents on the physicochemical properties of asphalt is not exactly defined. This study compared the physical properties of ASA-modified asphalt (AMAs) to determine the optimal dosage and investigated the rheological and adhesion properties. Based on the roller bottle method and water immersion method, the moisture susceptibility of AMAs with three particle sizes was investigated. The results showed that the modification of asphalt using anti-stripping agents was a physical modification. At the optimum dosage of anti-stripping agents (0.3%), the basic physical properties of AMA1 were the most desirable. ASA2 increased the resistance of asphalt for deformation at high temperature by 46%, and AMA3 had the best low-temperature performance. ASAs enhanced the dispersed and polar components in the asphalt binder, improving the adhesion energy of asphalt. AMA3 had the strongest adhesion to the aggregate, with an increase in adhesion work by 2.8 times and a 45% of increase in ER value. This was attributed to ASA3 containing with a large number of metal cations and polar functional groups. It was shown that ASAs provided the most improvement in the anti-stripping performance of asphalt mixtures with 9.5–13.2 mm particles. The amide ASA, phosphate ASA and aliphatic amine ASA improved the water damage resistance of asphalt by 65%, 45% and 78%, respectively. This study can help engineers realize the effects of different types of ASAs on the physicochemical properties of asphalt and select the most suitable type of ASAs according to the service requirements.

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Leaching and mechanical performance of rubberized warm mix asphalt modified through the chemical treatment of hazardous waste materials

Cited by 8 publications

References 57 publications

Effect on stability of asphalt using COVID-19 single use face mask and saline tube waste

Effect on stability of asphalt using COVID-19 single use face mask and saline tube waste

Carbon Sequestration via Bituminous Composites Containing Recycled High-Density Polyethylene

Experimental Study on the Physicochemical Properties of Asphalt Modified by Different Anti-Stripping Agents and Their Moisture Susceptibility with Aggregates

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