Incorporation of PET wastes in rendering mortars based on Portland cement/hydrated lime

Spósito, Felipe A.; Higuti, Ricardo Tokio; Tashima, Mauro M.; Akasaki, Jorge Luís; Melges, José Luiz Pinheiro; Assunção, Camila Cassola; Bortoletto, Marcelo; Silva, Rodrigo G.; Fioriti, César Fabiano

doi:10.1016/j.jobe.2020.101506

Cited by 27 publications

(21 citation statements)

References 27 publications

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“…Ashoor et al presented that rPET was added to asphalt by a percentage of (5–15%) to improve its properties of mechanical and rheological properties [ 236 ]. Sposito et al reported incorporating rPET wastes in rendering mortars based on Portland cement/hydrated lime [ 237 ]. In this case, rPET fibers were proposed to be used as either reinforcement in concretes or cast as blocks, which can be accepted as successful building materials.…”

Section: Reactor Of Recycling Pet and Application Of Rpetmentioning

confidence: 99%

Strategic Possibility Routes of Recycled PET

2021

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The polyethylene terephthalate (PET) application has many challenges and potential due to its sustainability. The conventional PET degradation was developed for several technologies to get higher yield products of ethylene glycol, bis(2-hydroxyethyl terephthalate) and terephthalic acid. The chemical recycling of PET is reviewed, such as pyrolysis, hydrolysis, methanolysis, glycolysis, ionic-liquid, phase-transfer catalysis and combination of glycolysis–hydrolysis, glycolysis–methanolysis and methanolysis–hydrolysis. Furthermore, the reaction kinetics and reaction conditions were investigated both theoretically and experimentally. The recycling of PET is to solve environmental problems and find another source of raw material for petrochemical products and energy.

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Section: Reactor Of Recycling Pet and Application Of Rpetmentioning

confidence: 99%

Strategic Possibility Routes of Recycled PET

2021

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“…Although PET is a recyclable material, most are disposed of in inappropriate places, causing huge losses. This is related to the total cost of the lifecycle, corporate responsibility, as well as the lack of dissemination of public information and the lack of incentives for recycling cooperatives [20,21].…”

Section: Introductionmentioning

confidence: 99%

Application of Plastic Wastes in Construction Materials: A Review Using the Concept of Life-Cycle Assessment in the Context of Recent Research for Future Perspectives

Azevedo²,

et al. 2021

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The urbanization process contributes to the growth of solid waste generation and causes an increase in environmental impacts and failures in the management of solid waste. The number of dumps is a concern due to the limited implementation and safe disposal of this waste. The interest in sustainable techniques has been growing in relation to waste management, which is largely absorbed by the civil construction sector. This work aimed to review plastic waste, especially polyethylene terephthalate (PET), that can be incorporated with construction materials, such as concrete, mortars, asphalt mixtures, and paving. The use of life-cycle assessment (LCA) is related, as a tool that allows the sustainability of products and processes to be enhanced in the long term. After analyzing the recent literature, it was identified that studies related to plastic wastes in construction materials concentrate sustainability around the alternative destination of waste. Since the plastic waste from different production chains are obtained, it was possible to affirm the need for a broader assessment, such as the LCA, providing greater quantification of data making the alternative processes and products more sustainable. The study contributes to enhance sustainability in alternative building materials through LCA.

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“…Global plastic production is growing rapidly and by 2030 the world may produce about 619 million tons of plastic per year [ 6 ]. A study by Spósito et al [ 7 ] emphasizes that post-consumer polyethylene terephthalate (PET) products have generated a growing interest regarding their recycling potential and their negative impacts on the environment, such as pollution and long degradation time. According to WWF [ 8 ], phasing out single-use plastics has the potential to reduce plastic demand by up to 40% by the year 2030.…”

Section: Introductionmentioning

confidence: 99%

“…The growing demand for sustainable products has encouraged several studies that search for alternative techniques regarding the reuse of waste in construction materials, such as mortars with sugarcane bagasse [ 10 ], cement pastes with açai fiber [ 11 , 12 ], blast furnace slag [ 13 , 14 ], construction and demolition waste [ 15 ], ceramic materials with rice ash water treatment plant sludge [ 16 ], pulp and paper industry sludge [ 17 ], construction and demolition waste [ 18 ], and agricultural waste [ 19 ], as well as concrete with plastic waste [ 20 ]. Therefore, research also highlights the reuse of plastic waste in construction materials [ 19 , 20 ] such as paving [ 21 ], mortar [ 7 ], concrete [ 19 , 20 , 22 , 23 ], fired clay blocks, and bricks [ 24 ], as well as unfired blocks and bricks [ 25 , 26 ], thus showing PET ( Figure 1 a) as an addition in the production of these materials.…”

Section: Introductionmentioning

confidence: 99%

“…In this sense, the use of plastic waste can also be considered in studies such as [ 7 ], which showed that hydrated mortars produced with PET bottle waste replaced the fine aggregate in the mixture and suffered changes in properties in their fresh and hardened states. Reference [ 21 ] investigated the effects of PET waste on hardened properties in high strength concrete and the investigation showed the interference of high temperatures on concrete properties, in this case, the occurrence of material fragmentation and the release of greenhouse gases.…”

Section: Introductionmentioning

confidence: 99%

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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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Incorporation of PET wastes in rendering mortars based on Portland cement/hydrated lime

Cited by 27 publications

References 27 publications

Strategic Possibility Routes of Recycled PET

Strategic Possibility Routes of Recycled PET

Application of Plastic Wastes in Construction Materials: A Review Using the Concept of Life-Cycle Assessment in the Context of Recent Research for Future Perspectives

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

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