Use of expanded polystyrene from disposable food pack as a modifier for bitumen in hot mix asphalt

Akilu, K.; Olowosulu, Adekunle Taiwo

doi:10.4314/njt.v39i4.7

Cited by 9 publications

(8 citation statements)

References 7 publications

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“…This could be responsible for the decrease in penetration with the increase in the melted EPS content in the bitumen. This result agrees with the observations of [14,15,18] in which the penetration also decreased with the addition of EPS plastic wastes in ground form.…”

Section: Marshal Test Characteristicssupporting

confidence: 93%

“…Murana et al [18], used disposable food pack, a form of polystyrene to modify bitumen in hot mix asphalt and observed that with the increase in percentage by weight of the disposable food pack in bitumen there was a decrease in the penetration, ductility, flow and specific gravity while there was an increase in softening point and stability value. An optimum disposable food pack content of 6.7% by weight of the optimum bitumen content was obtained in the study.…”

Section: Introductionmentioning

confidence: 99%

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Development of Melted Expanded Polystyrene as Βitumen Modifier for Pavement Construction

ORIAJE¹,

DAHUNSI²,

ADEYEMO³

2023

JESR

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This study was designed to investigate the Performance of melted Expanded Polystrene (EPS) wastes on the quality of bitumen used in asphaltic concrete. The EPS materials were ground and then melted (200-400 oC) to form a slurry. Specific gravity of the EPS and chemical composition were determined by AAS analyses. The melted EPS was used as a modifier in mix proportions of 0, 2.5, 5, 7.5 and 10% by weight of bitumen. The 5% unmodified bitumen content obtained from the Marshall mix design was used to prepare asphalt concrete samples with 0 to 10% contents of melted EPS. The products were tested for Marshall stability, specific gravity, penetration, softening point, ductility, loss on heating, viscosity, flash and fire points and the melting point tests using standard methods. The ground EPS was uniform and well-graded (4.750-0.010 mm) with a specific gravity of 0.012, having a styrene structure with methanol on the ring. The specimen prepared with the specified mix proportion of EPS produced results that ranged between 5598.71-16937.70 N for Marshal stability; 2.02-3.54 for specific gravity; 129-152 mm for penetration; 42.80-47.50 oC for softening point; 75.00-32.90 cm for ductility; 0-3.48% for loss on heating; 208-2204 sec.STV for viscosity; 243.3-269.0 oC for flash point; 196.1-211.0 oC for melting point. The results also showed that with correlation coefficients ranging from r = 0.658-0.999, there is a strong positive correlation between the improvement exhibited in the specimen tested properties and melted EPS used in bitumen. At the 5% bitumen with 5% EPS by weight of asphalt concrete, the results of stability, flow and optimum bitumen content satisfied the British Standard Specification framework for polymer-modified bitumen and it is therefore suitable for flexible pavement construction.

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Section: Marshal Test Characteristicssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Development of Melted Expanded Polystyrene as Βitumen Modifier for Pavement Construction

ORIAJE¹,

DAHUNSI²,

ADEYEMO³

2023

JESR

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“…Besides, they have reported an increase in stiffness of the bitumen with waste PS according to penetration and softening point results. The raise in the stiffness is also supported by other studies [19][20][21]. Although several studies have been carried out on EPS modification of asphalt binder, no single study exists that uses statistical evaluation methods.…”

Section: Introductionmentioning

confidence: 53%

“…The waste EPS was added into the bowl, which contains 150°C hot bitumen, at certain percentages of bitumen weight ( 2%, 4%, 6%, and 8%). These ratios were selected based on previous studies where additive ratios are below 10% [16,[19][20][21]. Then, EPS and the bitumen mixed homogeneously.…”

Section: Methodsmentioning

confidence: 99%

Modification of Asphalt Binder with Waste Expanded Polystyrene (EPS) Foam

Yıldız

Kınacı

Atakan

2021

Celal Bayar Üniversitesi Fen Bilimleri Dergisi

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Waste polymers are widely used in asphalt modification, especially, in order to reduce their detrimental effect on the environment. This study discusses the usability of waste expanded polystyrene (EPS) foam in asphalt modification. In this respect, the EPS foam, which produces waste in both production and use stages, was mixed with bitumen by weight at the ratios of 2%, 4%, 6%, and 8%, and dry modification method was employed. The penetration, ductility, softening point, flash point, and specific gravity values of virgin bitumen were compared with waste EPS foam modified bitumen. The comparison was made by both graphical and statistical methods. A strong correlation between the physical properties of modified asphalt and the ratio of EPS foam was observed. A drop was observed in penetration and ductility values. Besides, it was found by statistical analyses that 2% of the increase in the additive ratio is not sufficient to make a significant difference in the physical properties of bitumen, therefore, the increase should be at least 4%. Overall, it is concluded that EPS foam additive can be used in bitumen modification for hot regions where low penetration is required.

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“…It was concluded that the PS-modified binder could perform satisfactorily in hot weather and could be applied on playground surfaces, parking lots, and sidewalk pavements. Recycled polystyrene from waste disposable food packs (DFP) as a bitumen modifier for hot mix asphalt was investigated by Murana et al [18]. DFP obtained from household waste was mixed into the bitumen in proportions of 2%, 4%, 6%, 8%, and 10%.…”

Section: Introductionmentioning

confidence: 99%

Properties of PS-modified asphaltic concrete containing waste RHA and de-silted sand

Ewa,

Etika,

Egbe

2024

Eng. Res. Express

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This research assessed the impact of incorporating waste Polystyrene (PS) at replacement levels ranging from 5% to 50% in bitumen binder modification for sustainable asphalt. Rice husk ash (RHA) and de-silted sand served as filler and fine aggregate, respectively, with crushed granite acting as coarse aggregate. Various tests, encompassing penetration, viscosity, flash point, fire point, specific gravity, ductility, and the Marshall stability test, were conducted on the asphalt binder. In the case of the modified binder, the penetration, ductility, viscosity, and specific gravity exhibited a decline with increasing PS content, while the flash and fire points experienced an upward trend. The stability assessment revealed that at a 10% PS content, the asphalt exhibited suitable characteristics for heavy traffic (wearing course), with stability, flow, density, air void, void in mineral aggregates (VMA), and Void filled with bitumen (VFB) values of 6825N, 3.33mm, 2.362g/cm3, 4.52%, 18.21%, and 75.18%, respectively. Within the 15%-45% PS content range, the modified asphalt met the criteria for medium traffic (binder course). FTIR and SEM analyses confirmed the successful synthesis of PS-modified asphalt, demonstrating the encapsulation of PS microspheres on the binder's surface, forming a composite network structure in the asphalt. Consequently, it was concluded that this investigated modified asphalt derived from waste materials could be effectively utilized in constructing asphaltic pavement courses. These findings suggest the potential for the developed modified asphalt to serve as an economical road surfacing material, concurrently addressing pollution and environmental concerns associated with waste.

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Use of expanded polystyrene from disposable food pack as a modifier for bitumen in hot mix asphalt

Cited by 9 publications

References 7 publications

Development of Melted Expanded Polystyrene as Βitumen Modifier for Pavement Construction

Development of Melted Expanded Polystyrene as Βitumen Modifier for Pavement Construction

Modification of Asphalt Binder with Waste Expanded Polystyrene (EPS) Foam

Properties of PS-modified asphaltic concrete containing waste RHA and de-silted sand

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