Study of the Interaction Between Oligomerised Recycled Poly(ethylene terephtalate) and Concrete Waste

Cestari, Sibele Piedade; Albitres, Gerson Alberto Valencia; Pires, Homero Modesto; Freitas, Daniela de França da Silva; Mendes, Luís Claudio

doi:10.1007/s10924-019-01569-x

Cited by 11 publications

(4 citation statements)

References 29 publications

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“…However, in the case of raw material powder passed with 100 mm sieve, it was reported that quantity required to experiment was difficult to prepare and it takes time to be milled. For composite material using waste concrete powder, the mortar, 14 cementitious composite, 15 polymer composite 49,50 and natural rubber composite 51 have been reported. These waste concrete powders were prepared by dust collection system of demolish structure or mechanical grinding, and they have not been classed for recycled coarse aggregate and recycled fine aggregate.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the recycled fine aggregate is an industrial waste, it could be expected to have a raw material cost advantage in comparison to the glass, carbon, bamboo fiber. In addition, Cestari et al did not investigate the mechanical properties of polymer composite using recycled fine aggregate powder 49,50 Therefore, it appears that recycled fine aggregate powders (RFAP) is not currently being used as plastic reinforcement particles.…”

Section: Introductionmentioning

confidence: 99%

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Effective utilization of recycled fine aggregate powder as reinforcement particles in polyethylene composite

Kanda

Abass

2020

Polymers and Polymer Composites

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Effective waste concrete recycling is desirable from the viewpoints of environmental protection and extending the working lives of waste concrete final disposal sites. Recycled fine aggregate powders (RFAP) were obtained by milling waste concrete, and in this paper, we attempted to use RFAP as reinforcement particles in a polyethylene (PE) composite material. The PE powder and RFAP were blended together, and composites were fabricated using compression molding. Our results showed that the flexural strength and flexural modulus of the created composites improved with increased RFAP content. The RFAP dispersion state was honeycomb-like in the composite material, and from inspecting the specimen side view after three-point bending tests, it was apparent that crack propagation proceeded into the RFAP part of the composite, between PE particles. We then performed elastic stress analysis on the composites, in order to define the RFAP reinforcing behavior, using finite element analysis based on the homogenization method. As a result, it was revealed that the Mises stress decreased with increased RFAP content, confirming that there is a potential role for RFAP as reinforcement particles in PE-based composites.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effective utilization of recycled fine aggregate powder as reinforcement particles in polyethylene composite

Kanda

Abass

2020

Polymers and Polymer Composites

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“…Table 1 summarises the given acronyms for the materials. Based on former developments (8)(9)(10)(11), other wastestream materials were selected to produce composites that resembled the aspect of traditional materials like concrete, clay and wood. The non-plastic waste-stream materials were red mud (kindly donated by Alteo Group), concrete waste and hemp fibre (both provided by the Concrete Laboratory of QUB).…”

Section: Methodsmentioning

confidence: 99%

Rotational-Moulded Building Blocks for the Circular Economy

Cestari

Martin

Hanna

et al. 2021

MSF

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Throughout the combination of unique approaches on innovative polymer composites and rotational moulding plastics processing technique, we developed a building block using a mix of recycled and virgin plastic. This block was a technical case study from a multidisciplinary approach - comprising materials science, polymers processing and design - to reinsert recycled plastics in the Circular Economy. The aim was to produce a three-dimensional interlockable block, combining unique design and unconventional materials to create an emblematic building element. We investigated the composition and availability of local plastic waste, as well as other waste-stream materials – concrete waste, red mud, hemp fibre, sugarcane bagasse. We prepared a range of composites and blends to test their prospective aspect and processability. To simulate the end-result of a rotationally-moulded part, we prepared samples of the blends in an oven. The thermal analysis showed that all materials were thermally stable at the processing temperature of the virgin polymer in rotomoulding, around 200 °C. There were an evident LLDPE continuous-phase and a recyclate dispersed-phase. We also explored the aesthetic effect of scattering particles of colour in the mixes. The impact test showed better results for the polyethylene-based recyclates if compared to polypropylene and poly (ethylene terephthalate) ones. We concluded that waste materials could be revalued into something practical and reproducible, produced by rotational moulding plastics processing. And we developed a viable and innovative potential product for the Circular Economy, requiring minimal fixing and no further external finishing.

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“…4,5 Furthermore, Minagawa et al reported that recycling concrete as a roadbed material decreases the quality of the concrete. 5 Therefore, alternatively, waste concrete has been effectively used in compression molds 4 ; preparation of botanical concrete by compression molding of natural fiber and waste concrete 5,12 ; development of adsorbent materials for CO 2 removal 1,13 ; fabrication of glass ceramics 14 and ceramics 15,16 ; synthesis of zeolites [17][18][19] ; development of fillers or reinforcement materials for polymer composites [20][21][22] ; and preparation of geopolymer concrete mixes. 23,24 Typically, clay is used as a filler in polymer composites.…”

Section: Introductionmentioning

confidence: 99%

Compression molding of polypropylene‐ and polyethylene‐based composite materials using siliceous waste concrete powder

Kanda

2024

Polymer Composites

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This study investigated the applicability of siliceous waste concrete powder (WCP‐S) as a reinforcing particle in plastic composite materials for effectively utilizing waste concrete. WCP‐S was obtained by milling waste concrete. Two types of resin materials, polypropylene (PP) and polyethylene (PE), were used as the matrix of the composite material. Composite materials were fabricated via compression molding, and the effect of the WCP‐S content on the mechanical properties of the composite materials was investigated. The flexural strength of the PP‐based material decreased with increasing WCP‐S content, whereas the flexural modulus increased. This result suggests insufficient interfacial adhesion between the matrix resin and WCP‐S in the plastic region with high flexural load. To improve this interfacial adhesion, we investigated the mechanical properties of the PE‐based composite material. The flexural strength remained almost constant on increasing the WCP‐S content in the PE‐based composite material, whereas the flexural strength increased. Therefore, WCP‐S is a promising reinforcement particle with an improved flexural modulus for PP or PE resins.Highlights Plastic composite material was fabricated using WCP‐S. The flexural strength of PP‐based composite material decreased. The flexural strength of PE‐based composite material remained almost constant. Flexural modulus increased the PP‐ and PE‐based composite material. WCP‐S is a promising reinforcement particle for PP/PE resins.

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Study of the Interaction Between Oligomerised Recycled Poly(ethylene terephtalate) and Concrete Waste

Cited by 11 publications

References 29 publications

Effective utilization of recycled fine aggregate powder as reinforcement particles in polyethylene composite

Effective utilization of recycled fine aggregate powder as reinforcement particles in polyethylene composite

Rotational-Moulded Building Blocks for the Circular Economy

Compression molding of polypropylene‐ and polyethylene‐based composite materials using siliceous waste concrete powder

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