Recycling micro polypropylene in modified hot asphalt mixture

Buruiană, Daniela Laura; Georgescu, Puiu Lucian; Carp, Gabriel Bogdan; Ghisman, Viorica

doi:10.1038/s41598-023-30857-9

Cited by 7 publications

(4 citation statements)

References 9 publications

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“…The formulation of hot bituminous asphalt type AB 31.5 containing 0.3% surgical masks as used in Sample 2 was the subject of the patent filed in 2021 [33]. The samples used for Marshall tests have a cylindrical shape with a diameter of 10 cm and a height of 6.3 cm.…”

Section: Bituminous Asphalt Paving Sample Preparationmentioning

confidence: 99%

“…Currently, the primary recycling methods for disposable medical mask waste encompass high-temperature incineration, landfill decomposition, and chemical and mechanical recycling [12,13]. Surgical masks are obtained using different polymers and inorganic additives, and usually, there is no available detailed information on their composition [14], but the chemical composition of most disposable face masks is polypropylene, polyethylene, and polyurethane [15]. The high-temperature incineration method causes a variety of toxic byproducts that cause serious environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

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Advanced Recycling of Modified EDPM Rubber in Bituminous Asphalt Paving

Buruiana,

Georgescu,

Carp

et al. 2024

Buildings

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One of the environmental problems worldwide is the enormous number of surgical masks used during the COVID-19 pandemic due to the measures imposed by the World Health Organization on the mandatory use of masks in public spaces. The current study is a potential circular economy approach to recycling the surgical masks discarded into the environment during the COVID-19 pandemic for use in bituminous asphalt pavement. FTIR analysis showed that the surgical masks used were made from ethylene propylene diene monomer (EPDM) rubber modified with polypropylene. The effects of the addition of surgical masks in bituminous asphalt on the performance of the base course were demonstrated in this study. The morphology and elemental composition of the bituminous asphalt pavement samples with two ratios of surgical mask composition were investigated by SEM-EDX and the performance of the modified bituminous asphalt pavement was determined by Marshall stability, flow rate, solid–liquid ratio, apparent density, and water absorption. The study refers to the technological innovation of using surgical masks in the formulation of AB 31.5 bituminous asphalt base course, which brings tremendous benefits to the environment by reducing the damage caused by the COVID-19 pandemic.

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Section: Bituminous Asphalt Paving Sample Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advanced Recycling of Modified EDPM Rubber in Bituminous Asphalt Paving

Buruiana,

Georgescu,

Carp

et al. 2024

Buildings

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“…Some laboratory-scale studies look for alternative reuse of plastic materials in the construction sector. For example, PET bottles could be used as concrete additives ( Baciu et al, 2022 ) while polypropylene could be used in asphalt mixtures ( Buruiana et al, 2023 ). The recycling of HDPE for industrial-scale applications is required to improve the diversion rate of this plastic waste flow from landfills in Romania ( Teuşdea et al, 2020 ).…”

Section: Macroplastic Pollution In Terrestrial and Aquatic Environmentsmentioning

confidence: 99%

Macro and microplastic pollution in Romania: addressing knowledge gaps and potential solutions under the circular economy framework

Mihai,

Ulman,

Pop

2024

PeerJ

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Background This review reveals the role of linear economy prevalence and mismanagement practices in plastic pollution of aquatic and terrestrial environments and related knowledge gaps in Romania while outlining downstream and upstream solutions to reduce plastic pollution and adopt circular economy strategies. Thus, the major aim of this study is the investigation of the stage of scientific knowledge concerning all these demands in the Romanian context. Methodology This work integrates two main approaches: (i) a bibliometric analysis fed by Web of Science and Scopus databases to reveal the current coverage of peer-reviewed literature related to plastic waste in Romania and (ii) a subject-based review to underline the main themes related to plastic waste management, plastic pollution, and mitigating options in Romania in line with circular economy principles. Results Reducing plastic pollution requires scientific knowledge, multi-sectoral cooperation, and societal awareness. Following this, the topics of plastic waste and plastic pollution appeared to be under-investigated in the literature considering Romania as a case study and concentrated around the 2020 year, emphasizing, in this way, the trendiness of plastic waste concerns and their management in the current research landscape. Our analysis points out that: (i) Romania is facing massive plastic pollution requiring solid improvements in waste management performances; (ii) few peer-reviewed research studies are performed in Romania for both macro and microplastic concerns with unknown pollution levels in most of its geographical regions; (iii) the plastic waste management is still understudied here, while waste statistics are poorly available at local levels; (iv) the perspectives of circular economy transition are still limited, feeding the plastic pollution in the coming years. Conclusions Several knowledge gaps are identified and must be covered by future research such as (i) adjusting mismanaged plastic waste levels to regional waste management performances and determining littering rates in urban and rural areas to improve the plastic pollution modeling inputs; (ii) examining plastic pollution associated with landfill sites and waste imports; (iii) assessing the sectoral contributions to macro and microplastic pollution of aquatic environments related to municipalities, tourist destinations, agriculture, etc.; (iv) determining retention levels of plastic in river basins and role of riparian vegetation; (v) analyzing microplastics presence in all types of freshwater environments and interlinkage between macroplastic fragmentation and microplastic; (vi) assessing the plastic loads of transboundary rivers related to mismanagement practices; (vii) determining concentrations of microplastics in air, soil, and other land use ecosystems.

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“…A lack of construction quality control of asphalt layers will often lead to rework, waste materials, and increased cost [1][2][3][4][5]. This is not conducive to the realization of energy saving and emission reduction.…”

Section: Introductionmentioning

confidence: 99%

Construction Quality Control for Rutting Resistance of Asphalt Pavement Using BIM Technology

Zhao,

Ren,

Zhang

et al. 2024

Buildings

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During the course of building asphalt pavement, a lack of quality control will lead to the abandonment of the asphalt mixtures. One of the most common problems with asphalt pavement is rutting. Improving the construction’s quality is an important measure to reduce rutting. The purpose is to ensure the high-temperature durability of asphalt mixtures during the construction workflow to reduce the waste of asphalt mixtures, as well as to provide a methodology for the current monitoring of the quality based on the building information modeling (BIM). Rutting resistance was appraised utilizing the static uniaxial creep examination. Oblique photography technology was used to obtain terrain data. The software of Revit 2016 was used to build the spatial model of highways and bridges. The results show that the size distribution of particles, the asphalt proportion, and the forming specimen’s temperature are the vital elements influencing the high-temperature behavior. The gradation was identified as the most important factor. The second was the asphalt binder content. Gradation variation should be given more consideration during paving using asphalt mixtures. Furthermore, the developed BIM platform can also monitor rutting resistance to reduce rework during construction.

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Recycling micro polypropylene in modified hot asphalt mixture

Cited by 7 publications

References 9 publications

Advanced Recycling of Modified EDPM Rubber in Bituminous Asphalt Paving

Advanced Recycling of Modified EDPM Rubber in Bituminous Asphalt Paving

Macro and microplastic pollution in Romania: addressing knowledge gaps and potential solutions under the circular economy framework

Construction Quality Control for Rutting Resistance of Asphalt Pavement Using BIM Technology

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