Effect of Used Motor Oil on the Macro and Micromechanical Properties of Crumb Rubber Modified Asphalt

Abdelrahman, Magdy; Ragab, Mohyeldin

doi:10.4172/2252-5211.1000180

Cited by 5 publications

(13 citation statements)

References 15 publications

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“…On the other hand, the liquid phase would be employed in the fractional and molecular investigation. Earlier work dealing with physical testing of the liquid phase has been already addressed by this research group [14]. The liquid phase of CRMA was extracted by removing the nondissolved CRM particles from the CRMA matrix.…”

Section: Extraction Of Liquid Phasementioning

confidence: 99%

Investigation of the Physical and Molecular Properties of Asphalt Binders Processed with Used Motor Oils

Ragab

Abdelrahman

2015

Journal of Materials

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In this work we investigated the performance aspects of addition of used motor oils (UMO) to neat and crumb rubber modified asphalts (CRMA) and related that to the change of molecular size distribution of modified asphalt's fractions; asphaltenes, saturates, naphthene aromatics, and polar aromatics. Based on the results of temperature sweep viscoelastic tests, addition of crumb rubber modifier (CRM) alone or with UMO results in the formation of internal network within the modified asphalt. Based on the results of short and long term aged asphalts, the utilization of combination of UMO and CRM enhanced the aging behavior of asphalt. Bending beam rheometer was utilized to investigate the low temperature behavior of UMO modified asphalts. Based on those tests, the utilization of the UMO and CRM enhanced the low temperature properties of asphalts. Based on the results of the asphalt separation tests and the Gel Permeation Chromatography (GPC) analysis, it was found that saturates and naphthene aromatics are the two asphalt fractions that have similar molecular size fractions as those of UMO. However, UMO only shifts the molecular sizes of saturates after interaction with asphalt. Results also show that polar aromatics pose higher molecular size structures than UMO.

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Section: Extraction Of Liquid Phasementioning

confidence: 99%

Investigation of the Physical and Molecular Properties of Asphalt Binders Processed with Used Motor Oils

Ragab

Abdelrahman

2015

Journal of Materials

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“…It has been recommended that UMO percentage should be less than 3% in combination with at least 10% CRM [1,2], with mixing at 190 • C at 30 Hz for 120 min interaction time; these interaction conditions were able to form an internal 3D network structure and a plateau region in temperature sweep viscoelastic curves was found [1,2]. Both macro and micromechanical properties were enhanced [1]. Therefore, 2.5% UMO and 10 or 15% CRM percentages were selected in this work to be added to asphalt binder.…”

Section: Raw Materialsmentioning

confidence: 99%

“…Abdelrahman et al [1] investigated the effect of adding UMO on the macro (|G*| and δ) and micromechanical properties (hardness and elastic modulus) of neat and crumb rubber modified asphalt (CRMA) binders. It was found that using UMO deteriorated the properties of the neat asphalt binders [1,2]. Furthermore, it was noticed that asphalt binders modified with crumb rubber (CRM) only enhanced rutting resistance, increasing the value of (|G*|/sinδ).…”

Section: Introductionmentioning

confidence: 99%

“…UMO was determined to have a similar molecular size distribution of saturates and naphthene aromatics [2]. Both CRM and UMO played an essential role in the modification of asphalt binders' properties since both enhanced the resistance to aging and the performance grade (PG) low temperature by approximately one grade from −22 to −28 • C [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…The excessive softening of UMO-modified asphalt binder is not required since it would in turn increase rutting depth [7][8][9]. Consequently, using UMO only up to a certain percentage is recommended, with a suggestion of less than 3% by weight of asphalt binder [1,2].…”

Section: Introductionmentioning

confidence: 99%

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Balancing the Performance and Environmental Concerns of Used Motor Oil as Rejuvenator in Asphalt Mixes

et al. 2019

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Road deterioration inspires researchers to enhance the properties of asphalt binder for better performing mixes. Recycled tire rubber, or crumb rubber modifier (CRM), and used motor oil (UMO) are two modifiers that enhance asphalt binder performance through two different mechanisms. CRM affects high-temperature properties while UMO modifies low-temperature properties. Potential environmental concerns arising from the use of UMO have been raised in the literature. In this paper, the two recycled materials were investigated for their ability to complement each other. Both performance benefits of using both materials and the environmental concerns of using UMO were studied. Four CRM asphalt binders were investigated: two with UMO and two without UMO. Environmental impacts were evaluated using gas chromatography to check air emissions for benzene, toluene, ethyl-benzene, and xylenes (BTEX). The potential for toxic leaching of elements from modified hot mix asphalt (HMA) were checked using the US Environmental Protection Agency (EPA) Toxicity Characteristic Leaching Protocol (TCLP). For asphalt binders modified by CRM-UMO combinations, CRM decreased the amounts of released BTEX components, presumably by absorbing UMO and slowing the release of BTEX. Leaching results concluded that UMO mixtures showed a notable percentage of sulfur (S) as compared to non-UMO mixes. All these leachate components were under EPA limits.

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Study on waste engine oil and waste cooking oil on performance improvement of aged asphalt and application in reclaimed asphalt mixture

Zhang

Feng

et al. 2021

Construction and Building Materials

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Effect of Used Motor Oil on the Macro and Micromechanical Properties of Crumb Rubber Modified Asphalt

Cited by 5 publications

References 15 publications

Investigation of the Physical and Molecular Properties of Asphalt Binders Processed with Used Motor Oils

Investigation of the Physical and Molecular Properties of Asphalt Binders Processed with Used Motor Oils

Balancing the Performance and Environmental Concerns of Used Motor Oil as Rejuvenator in Asphalt Mixes

Study on waste engine oil and waste cooking oil on performance improvement of aged asphalt and application in reclaimed asphalt mixture

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