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A platform for research: civil engineering, architecture and urbanism
Plastic bag waste modified bitumen a possible solution to the Algerian road pavements
Many Algerian road and highway pavements suffer from severe premature degradations that appear in the first years of their in-service life because of the insufficient performance of the asphalt pavement materials. This study examines the suitability of using plastic bag waste as a bitumen modifier in order to improve the behaviour of asphalt mixes. This paper analyses the effect of adding plastic bag waste; low density polyethylene (LDPE), to a conventional 40/50 graded bitumen. Basic rheological parameters such as penetration, softening point, ageing (RTFOT) and storage stability were used to determine the plastic addition resulting changes on the modified bitumen, expressed relatively to the pure bitumen basis. FTIR spectroscopy was also used to study the chemical functionalities present in the modified bitumen. It was observed that the penetrability of the waste plastic modified bitumen (WPmB) decreases and its softening point increases. Consequently, its thermal susceptibility and its aging rate decrease. Performances of the WPmB were then determined on an asphalt concrete mix (AC) in terms of mix compaction behaviour, stiffness modulus and water resistance ameliorations. Results obtained show that adding plastic waste to the pure bitumen allows reducing void content of the mix and increasing substantially its stiffness modulus and water resistance.
Plastic bag waste modified bitumen a possible solution to the Algerian road pavements
Many Algerian road and highway pavements suffer from severe premature degradations that appear in the first years of their in-service life because of the insufficient performance of the asphalt pavement materials. This study examines the suitability of using plastic bag waste as a bitumen modifier in order to improve the behaviour of asphalt mixes. This paper analyses the effect of adding plastic bag waste; low density polyethylene (LDPE), to a conventional 40/50 graded bitumen. Basic rheological parameters such as penetration, softening point, ageing (RTFOT) and storage stability were used to determine the plastic addition resulting changes on the modified bitumen, expressed relatively to the pure bitumen basis. FTIR spectroscopy was also used to study the chemical functionalities present in the modified bitumen. It was observed that the penetrability of the waste plastic modified bitumen (WPmB) decreases and its softening point increases. Consequently, its thermal susceptibility and its aging rate decrease. Performances of the WPmB were then determined on an asphalt concrete mix (AC) in terms of mix compaction behaviour, stiffness modulus and water resistance ameliorations. Results obtained show that adding plastic waste to the pure bitumen allows reducing void content of the mix and increasing substantially its stiffness modulus and water resistance.
Plastic bag waste modified bitumen a possible solution to the Algerian road pavements
Nouali, Mohammed (author) / Derriche, Zohra (author) / Ghorbel, Elhem (author) / Chuanqiang, Li (author)
Road Materials and Pavement Design ; 21 ; 1713-1725
2020-08-17
13 pages
Article (Journal)
Electronic Resource
Unknown
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