Lightweight PET based composite aggregates in Portland cement materials - Microstructure and physicochemical performance

Górak, Piotr; Postawa, P.; Trusilewicz, Lidia Natalia; Łagosz, Artur

doi:10.1016/j.jobe.2020.101882

Cited by 13 publications

(4 citation statements)

References 31 publications

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“…Considering that PET is a material that does not absorb water, it is believed that it contributed to the bricks not presenting high water absorption. This was confirmed by Górak et al [ 53 ] in studies of the effect of incorporating PET waste into cementitious composites, which indicated that the particle size of the waste has a significant effect on water absorption in relation to its porosity [ 54 , 55 , 56 , 57 ].…”

Section: Resultsmentioning

confidence: 56%

Technological Characterization of PET—Polyethylene Terephthalate—Added Soil-Cement Bricks

Silva

Cecchin

Azevedo³

et al. 2021

Materials

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The ever-growing consumption and improper disposal of non-biodegradable plastic wastes is bringing worrisome perspectives on the lack of suitable environmentally correct solutions. Consequently, an increasing interest in the circular economy and sustainable techniques is being raised regarding the management of these wastes. The present work proposes an eco-friendly solution for the huge amount of discarded polyethylene terephthalate (PET) wastes by addition into soil-cement bricks. Room temperature molded 300 × 150 × 70 mm bricks were fabricated with mixtures of clay soil and ordinary Portland cement added with up to 30 wt.% of PET waste particles. Granulometric analysis of soil indicated it as sandy and adequate for brick fabrication. As for the PET particles, they can be considered non-plastic and sandy. The Atterberg consistency limits indicated that addition of 20 wt.% PET waste gives the highest plasticity limit of 17.3%; moreover, with PET waste addition there was an increase in the optimum moisture content for the compaction and decrease in specific weight. Standard tests showed an increase in compressive strength from 0.83 MPa for the plain soil-cement to 1.80 MPa for the 20 wt.% PET-added bricks. As for water absorption, all bricks displayed values between 15% and 16% that attended the standards and might be considered an alternative for non-structural applications, such as wall closures in building construction.

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Section: Resultsmentioning

confidence: 56%

Technological Characterization of PET—Polyethylene Terephthalate—Added Soil-Cement Bricks

Silva

Cecchin

Azevedo³

et al. 2021

Materials

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“…(2021), ao avaliarem a influência da incorporação de PET em tijolos de solo-cimento, notaram que o acréscimo deste resíduo não alterava estatisticamente a absorção de água dos tijolos testados. Górak et al (2021) explicam que os resíduos podem gerar efeitos diferentes diante das diversas características de um material cimentício por causa do tamanho das partículas e da porosidade desses resíduos. Sendo assim, é possível notar que o resíduo de filtro de cigarro tem capacidade de absorver água e influenciar nos resultados de teor de absorção de água dos corpos de prova preparados.…”

Section: Caracterização De Corpos De Prova Solo-cimento Incorporados ...unclassified

Caracterização De Corpos De Prova Solo-Cimento Incorporados Com Polietileno Tereftalato (Pet) E Filtros De Cigarros

Morande,

Silva,

Silva

et al. 2024

Rev. Foco

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A extração de recursos naturais, dentre eles: solo, areia e água, para a produção de materiais de construção pode levar a problemas ambientais, como, assoreamento de rios, erosão de solos, etc. Somando-se a isso há o descarte de grandes quantidades de resíduos, como as garrafas PET. Outro fator impactante é a incineração de resíduos, neste caso, a incineração de cigarros apreendidos pela Polícia Rodoviária Federal. Diante da necessidade de se produzir materiais de construção, de forma menos impactante e passíveis da incorporação de resíduos, esta pesquisa teve como objetivo produzir corpos de prova solo-cimento com substituição do solo, em até 10% em massa, por resíduos de PET e filtros de cigarros. Os corpos de prova foram caracterizados quanto ao teor de absorção de água, resistência à compressão simples e os parâmetros avaliados ficaram dentro dos limites estabelecidos pela norma vigente (NBR 8491/2012). Observou-se aumento de cerca de 2% na absorção de água nos corpos de prova com 10% de resíduos, porém, sem ultrapassar o limite estabelecido pela norma. Sendo assim, conclui-se que o material preparado apresenta características similares à de um tijolo solo-cimento convencional.

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“…This excessive amount may have reduced the bonding 0.0% properties of the composite, resulting in a decrease in the friction angle and, consequently, a reduction in the shear strength of the composite [18]. Another factor to consider is the smooth surface of the PET plastic waste flakes, which may have hindered their interaction with the sand particles during compaction [19].…”

Section: Shear Strength Analysismentioning

confidence: 99%

Utilization of Plastic Waste in Reinforcing Sandy Soil for Sustainable Engineering Applications

Suthar,

Meena,

Kumar

2024

JES

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Large quantities of polyethylene terephthalate (PET) plastic are discarded into the environment during production, application, and disposal. Although current clean-up strategies aim to mitigate the adverse impacts of PET pollution, efforts struggle to keep up with the escalating amount of PET waste. This accumulation of PET waste poses significant threats to ecosystems worldwide. One recycling method for PET plastic waste involves its utilization in soil reinforcement applications within civil engineering. By incorporating PET plastic waste to reinforce poor-quality sands, sustainable construction practices can be promoted in civil engineering infrastructures, addressing multiple aspects of sustainability, including engineering, economic, social, and environmental considerations. The experimental work conducted in this research involved sieve analysis, proctor compaction test, California Bearing Ratio (CBR) test, and direct shear box test. The sand was reinforced with varying percentages of PET plastic waste flakes, namely 5, 10, and 15 %, with respect to the weight of the soil sample taken for the test, and laboratory tests were performed on the samples. Including PET plastic flakes enhanced various soil properties, such as shear strength and friction angle. It also improved the CBR value of the composite, making it suitable for pavement construction. The reduction in dry density further supports the application of the composite in lightweight structures. In conclusion, the geotechnical material obtained from the soil-PET plastic waste composite can be utilized in various geotechnical projects, including landfills and slope stabilization.

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Lightweight PET based composite aggregates in Portland cement materials - Microstructure and physicochemical performance

Cited by 13 publications

References 31 publications

Technological Characterization of PET—Polyethylene Terephthalate—Added Soil-Cement Bricks

Technological Characterization of PET—Polyethylene Terephthalate—Added Soil-Cement Bricks

Caracterização De Corpos De Prova Solo-Cimento Incorporados Com Polietileno Tereftalato (Pet) E Filtros De Cigarros

Utilization of Plastic Waste in Reinforcing Sandy Soil for Sustainable Engineering Applications

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