Quantification of recycled rubber content of end-of-life tyres in asphalt bitumen by total-reflection X-ray fluorescence spectrometry

Fernández-Ruiz, Ramón; Redrejo, M.J.; Pérez-Aparicio, Roberto; Saiz-Rodríguez, Leticia

doi:10.1016/j.sab.2020.105803

Cited by 7 publications

(3 citation statements)

References 22 publications

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“…The obtained recyclate can be used as a filler in cross-linked polymeric matrices [ 13 , 14 , 15 , 16 ]. The application of rubberized asphalt to construct pavements or the use of GTR as a modifier to the concrete are additional methods of recycled tire use [ 17 , 18 , 19 , 20 ]. There are also attempts to use rubber powder in additive technologies.…”

Section: Introductionmentioning

confidence: 99%

Processing and Mechanical Properties of Highly Filled PP/GTR Compounds

et al. 2022

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Ground rubber from automobile tires is very difficult to recycle due to the cross-linking of the macromolecules and thus the lack of thermoplastic properties. The research consisted of assessing the processing possibility via the injection of highly filled PP/GTR compounds modified with 1.5 wt.% 2.5-dimethyl-2.5-di-(tert-butylperoxy)-hexane. GTR dosing ranged from 30 wt.% up to 90 wt.%. The evaluation of the processing properties of the obtained materials was carried out on the basis of the melt flow index test results and the signals recorded during processing by the injection molding by temperature and pressure sensors placed in the mold. The influence of the applied modifier on the changes in the mechanical properties of PP/GTR was determined with hardness, impact and static tensile tests. Moreover, thermal properties were obtained by the differential scanning calorimetry method. It has been found that it is possible to efficiently process compounds with high GTR content using injection molding. The presence of the filler allows to significantly reduce the cooling time in the injection mold and thus the time of the production cycle. It has been confirmed that 2.5-dimethyl-2.5-di-(tert-butylperoxy)-hexane modifies the rheological properties of PP and thus the PP/GTR composition. The lower viscosity of the matrix results in a more accurate bonding with the developed surface of the GTR grains, which results in better mechanical properties of the rubber-filled polypropylene.

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Section: Introductionmentioning

confidence: 99%

Processing and Mechanical Properties of Highly Filled PP/GTR Compounds

et al. 2022

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“…In some applications dealing with the analysis of solid samples by XRF, the use of more complex sample treatments, similar to those involved in atomic spectroscopic techniques, is required. Commonly, wet ashing, involving digestion with strong acids, is used to destroy the organic matter and dissolve the analytes in a wide variety of environmental solid matrices before the XRF analysis (Fernández-Ruiz et al, 2020).…”

Section: Most Commonly Used Sample Preparation Strategiesmentioning

confidence: 99%

X-ray fluorescence spectrometry for environmental analysis: Basic principles, instrumentation, applications and recent trends

2022

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“…They are a source of material and energy resources as well in numerous market niches. Innovative solutions consisting of using these materials in diverse recycling applications like in polymer composites [ 5 ], concrete [ 6 , 7 ], asphalt [ 8 , 9 ] or as suitable media for biological growth and biofilm development in wastewater treatment systems [ 10 ] have been already reported in the literature. However, it is necessary to perform a deep investigation to establish new solutions to add value to these products.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Sustainable Brake Pads with Recycled End-of-Life Tire Rubber Particles

et al. 2021

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Sustainable composite brake pads were processed by employing recycled end-of-life tire (ELT) rubber particles obtained by means of cryogenic grinding and ambient grinding. The effect of the grinding mechanism and concentration of ELT rubber particles was then reported. From the friction result test, better behavior in terms of coefficient of friction (COF) was obtained when 3% of ELT rubber particles were introduced into the composite. It was demonstrated that the size of the particles is not as determinant as the friction mechanism in the wear properties of the sustainable brake pads. Whereas, while increasing the ELT rubber particle size acts as detrimental to the COF either in the ambient or cryogenic grinding, at high friction distances, the better adhesion of the particles because of the rough surface of the particles subjected to ambient grinding enhances the long-life behavior of the composite brake pads.

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Quantification of recycled rubber content of end-of-life tyres in asphalt bitumen by total-reflection X-ray fluorescence spectrometry

Cited by 7 publications

References 22 publications

Processing and Mechanical Properties of Highly Filled PP/GTR Compounds

Processing and Mechanical Properties of Highly Filled PP/GTR Compounds

X-ray fluorescence spectrometry for environmental analysis: Basic principles, instrumentation, applications and recent trends

Preparation and Properties of Sustainable Brake Pads with Recycled End-of-Life Tire Rubber Particles

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