Chemical and physical properties of poly (lactic) acid modified bitumen

Jailani, N.M. Abdul Khader; Ibrahim, Ahmad Nazrul Hakimi; Rahim, Abdur; Hassan, Norhidayah Abdul; Yusoff, Nur Izzi Md.

doi:10.1016/j.asej.2021.03.004

Cited by 14 publications

(5 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When analyzing 1 H NMR spectra of bitumen samples, scientists [13] divided the signals into two regions: 0.8-1.4 ppm in the region for protons of aliphatic alkanes, and the region 1.7-3.5 ppm is a proton of alkenes, alkynes. Based on the 1 H NMR spectra of samples of the original and modified bitumen (Fig.…”

Section: Discussion Of the Results Of Studying The Composition And Pr...mentioning

confidence: 99%

“…It is known [13] that one of the most promising and widely used methods for processing polymers and their wastes is the production of modifying additives for bituminous binders. In this regard, this study explores the potential of PET waste as a BND 70/100 bitumen modifier.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The results of the 1 H NMR spectrum of the initial bitumen show that it contains several chemical shift signals from 0.83 to 2.55 ppm. These signals can be divided into aliphatic proton signals from alkanes (0.8 to 1.4 ppm) and protons of alkenes, alkynes, or aliphatic compounds with a carbonyl group such as a ketone, aldehyde, ester, and carboxyl group (1.5 to 2.5 ppm) [13]. The presence of a chemical shift at ~7 ppm corresponds to the proton of the aromatic group [16].…”

Section: The Aim and Objectives Of The Studymentioning

confidence: 99%

See 2 more Smart Citations

The use of polyethylene terephthalate waste as modifiers for bitumen systems

Aitkaliyeva

Yelubay

Yerzhanova

et al. 2022

EEJET

View full text Add to dashboard Cite

This study examined the suitability of polyethylene terephtal (PET) waste to provide an alternative modification to bitumen and reduce waste accumulation. The chemical structure and physical properties were evaluated for modified bitumen with different PET flakes content from 2 to 10 %. The effect of PET waste content on bituminous systems was analyzed using IR and 1H NMR spectroscopy, differential thermal (DTA) and thermogravimetric (TGA) analyses. The study of change in the microstructure as a result of bitumen modification was carried out using atomic force microscopy (AFM). Regularities of changes in the structural-group composition of bituminous binders after their modification with PET waste have been established. It is noted that the chemical interaction of the base bitumen with PET flakes occurs due to the formation of associative bonds between the oxygen-containing components of the modifier and bitumen. The influence of the modifier on the physical and mechanical properties was evaluated using standard methods (penetration, extensibility and softening point). Based on the physical and mechanical properties of bitumen, such as needle penetration depth (penetration), ductility and softening point, it was found that the optimal dosage of PET waste in terms of asphalt binder characteristics is 3 %. It has been established that PET waste and original bitumen interact both at the chemical and physical levels and can be considered as a suitable alternative for changing the properties of bituminous binders. Thus, the obtained samples of modified bituminous binders have improved physical and mechanical properties, which makes it possible to produce high-strength asphalt concrete pavements based on them.

show abstract

Section: Discussion Of the Results Of Studying The Composition And Pr...mentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: The Aim and Objectives Of The Studymentioning

confidence: 99%

See 1 more Smart Citation

The use of polyethylene terephthalate waste as modifiers for bitumen systems

Aitkaliyeva

Yelubay

Yerzhanova

et al. 2022

EEJET

View full text Add to dashboard Cite

show abstract

“…Existing studies have mainly focused on the perspective that "the molecular weight of different components in asphalt is different", and characterized the changes in asphalt or detected the content of polymer organic modifier in asphalt by comparing the change in asphalt MSD. In addition, some scholars have used GPC to detect asphalt due to its high sensitivity [25,26].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Aging on the Molecular Distribution of Crumb Rubber Modified Asphalt Based on the Gel Permeation Chromatography Test

Wang

Chen

Wang³

et al. 2023

Buildings

View full text Add to dashboard Cite

Asphalt aging is one of the main causes of asphalt pavement cracking, loosening and other issues. On a macro level, the asphalt hardens and becomes more brittle, while on a micro level, the chemical composition and molecular weight distribution change. This is a very complicated physicochemical process. Gel permeation chromatography (GPC) is a powerful technical tool for understanding the mechanism of asphalt aging and expressing the asphalt aging process. GPC can be used to measure the distribution and content of each component in the asphalt aging process. The mechanism of action of crumb rubber modified asphalt has not been fully elucidated due to its complex composition. This study investigated the molecular weight of crumb rubber modified asphalt before and after aging, and filtered asphalt based on gel permeation chromatography. The results indicated that crumb rubber itself experiences severe degradation following PAV aging and that a significant number of macromolecular materials are incorporated into the asphalt phase, causing changes in key parameters. The average molecular weight (Mw) and dispersion (D) of crumb rubber modified asphalt are directly related. At the same time, the Mw of crumb rubber modified asphalt has a positive correlation with LMS content, while SMS content has a negative correlation with Mw. The increase in crumb rubber content has a positive impact on the material interaction, and the molecular weight distribution of crumb rubber modified asphalt is affected by the reaction degree of the crumb rubber in asphalt. The complex physical and chemical reaction of crumb rubber in asphalt has a direct impact on the external macro rheological properties of asphalt.

show abstract

“…For example, the use of acrylonitrile butadiene styrene (ABS) plastic, known for its toughness and impact resistance, in asphalt mixtures can potentially enhance road durability in high-traffic areas [ 31 , 32 ]. Furthermore, research into utilizing polylactic acid (PLA), a biodegradable plastic, suggests that it could be used to increase the environmental sustainability of road infrastructures [ 33 ].…”

Section: Introductionmentioning

confidence: 99%

Infrastructure in the Age of Pandemics: Utilizing Polypropylene-Based Mask Waste for Durable and Sustainable Road Pavements

Nciri,

Kim

2023

Polymers

View full text Add to dashboard Cite

When navigating the environmental exigencies precipitated by global pandemics, the escalation of mask waste presents a multifaceted dilemma. In this avant-garde research, we unveil a novel approach: harnessing the sterilized shredded mask residues (SMRs), predominantly composed of 100 wt. % polypropylene, as pioneering modifiers for asphalt. Distinct proportions of SMR (e.g., 3, 6, and 9 wt. %) were judiciously integrated with fresh–virgin base AP-5 asphalt and subjected to an extensive suite of state-of-the-art examinations, encompassing thin-layer chromatography-flame ionization detection (TLC-FID), Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and specific rheological metrics. The TLC-FID diagnostic trajectories highlighted the nuanced rejuvenating influence of SMR on the binder, a facet reinforced by a pronounced elevation in the thermodynamic stability index (IC). The FT-IR spectra elucidated SMR’s preeminent role as a filler, negating notions of chemical reactivity. The TGA analyses unveiled an elevated thermal onset of degradation, signposting enhanced thermal resilience, whereas the DSC readings illuminated a superior thermal comportment at lower extremities. The SEM evaluations rendered a clearer panorama: there was heightened textural perturbation at escalated SMR incorporations, yet the 3 wt. % concoction showcased an optimal, coherent microtexture symbiosis with asphalt. The rheological scrutinies revealed a systematic trajectory: a diminishing penetration and ductility countered by ascending softening points and viscosity metrics. The coup de maître stemmed from the DSR analyses, unequivocally validating SMR’s unparalleled prowess in curtailing rutting distress. This seminal inquiry not only posits a blueprint for refined pavement longevity but also champions a sustainable countermeasure to pandemic-propelled waste, epitomizing the confluence of environmental prudence an d infrastructural fortitude.

show abstract

Chemical and physical properties of poly (lactic) acid modified bitumen

Cited by 14 publications

References 49 publications

The use of polyethylene terephthalate waste as modifiers for bitumen systems

The use of polyethylene terephthalate waste as modifiers for bitumen systems

The Effect of Aging on the Molecular Distribution of Crumb Rubber Modified Asphalt Based on the Gel Permeation Chromatography Test

Infrastructure in the Age of Pandemics: Utilizing Polypropylene-Based Mask Waste for Durable and Sustainable Road Pavements

Contact Info

Product

Resources

About