Post-fire mechanical performance of concrete made with selected plastic waste aggregates

Correia, João R.; Lima, José Pinto de; Brito, Jorge de

doi:10.1016/j.cemconcomp.2014.07.004

Cited by 76 publications

(20 citation statements)

References 39 publications

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“…In the earlier reported studies, PET waste inclusion have resulted in deterioration of mechanical properties of concrete [27][28][29][30][31]. However, the performance of concrete with PET waste during ISO 834 exposure shown a comparable response but the temperature during heating was higher for CBC with PET waste than the concrete due to porous network formation [32]. The usage of PET residual has resulted in lesser deterioration in compressive strength and residual compressive strength in comparison to PET waste due to ISO 834 heat exposed [32].…”

Section: °Cmentioning

confidence: 95%

“…However, the performance of concrete with PET waste during ISO 834 exposure shown a comparable response but the temperature during heating was higher for CBC with PET waste than the concrete due to porous network formation [32]. The usage of PET residual has resulted in lesser deterioration in compressive strength and residual compressive strength in comparison to PET waste due to ISO 834 heat exposed [32]. Figure 17 shows the SEM images of fractured CBC with brick powder.…”

Section: °Cmentioning

confidence: 99%

“…The first objective of the present study is to assess and support the use of waste and harmful materials as fillers for improving the post-fire residual performance of standard concrete. Some studies of literature [26][27][28][29][30][31] are dedicated to the assessment of specific properties and effects of concrete-based solutions inclusive of PET residuals, with some efforts for the expected post-fire performance [32]. However, the cited documents are often related to standard methods and procedures, that often do not reproduce a real boundary condition for the tested materials.…”

Section: Introductionmentioning

confidence: 99%

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Study on the Compressive Behaviour of Sustainable Cement-Based Composites Under 1-Hour Direct Flame Exposure

Vedrtnam¹,

Bedon²,

Barluenga³

2020

Preprint

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Fire is a significant threat to human life and civil infrastructures. Builders and architects are hankering for safer and sustainable alternatives of concrete that do not compromise with their design intent or fire safety requirements. The aim of the present work is to improve the residual compressive performance of concrete in the post-fire exposure, by incorporating by-products from urban residues. Based on sustainability and circular economy motivations, the attention is focused on rubber tire fly ash, aged brick powder, and plastic (PET) bottle residuals used as partial sand replacement. The selected by-products from urban residues are used for the preparation of Cement-Based Composites (CBCs) in two different proportions (10 % and 15 %). The thermal CBC behaviour is thus investigated under realistic fire scenarios (i.e., Direct Flame (DF) for 1 hour (1h)), by following the ISO 834 standard provisions, but necessarily resulting in non-uniform thermal exposure for the cubic specimens. The actual thermal exposure is further explored with a Finite Element (FE) model, giving evidence of thermal boundaries effects. The post-fire residual compressive strength of heated concrete and CBC samples is hence experimentally derived, and compared to unheated specimens in ambient conditions. From the experimental study, the enhanced post-fire performance of CBCs with PET bottle residual is generally found superior to other CBCs or concrete. The structure-property relation is also established, with the support of Scanning Electron Microscopy (SEM) micrographs. Based on existing empirical models of literature for the prediction of the compressive or residual compressive strength of standard concrete, newly developed empirical relations for both concrete and CBCs are assessed.

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Section: °Cmentioning

confidence: 95%

Section: °Cmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study on the Compressive Behaviour of Sustainable Cement-Based Composites Under 1-Hour Direct Flame Exposure

Vedrtnam¹,

Bedon²,

Barluenga³

2020

Preprint

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“…There more scientific works (Correia et al, 2014;Ruiz -Herrero et al, 2016;Silva et al, 2013;Yang et al, 2015) where is recommended to use plastic waste as concrete aggregates, however it is missing more detailed data about different plastic waste influence on concrete properties.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Suitability to Use Plastic Waste in Concrete Production

Skominas

Zvinakevičius

Gurskis

et al. 2018

Proccedings of International Scientific Conference "RURAL DEVELOPMENT 2017"

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Nowadays one of the main tasks of environmental protection is the management and recycling of plastic waste. Plastic occupy the major part of all public waste and with this material is polluted all earth. In natural condition plastic decompose in 400 or even in 500 years. Therefore, it is important to solve this problem reusing plastic waste. One of the possible areas is construction industry. In the present paper were estimated how plastic waste impact the properties of concrete. During the research the part of coarse aggregates were changed with polyethylene (PE) pellets and cut polypropylene (PP) particles. The change of fresh concrete density, workability and hardened concrete density, compression strength, water absorbability were evaluated. The results show, that plastic waste has a positive effect on fresh concrete properties: the concrete become more workable and lighter. Unfortunately, on the main hardened concrete properties the increase plastic waste amount has the negative effect: the compression strength was decreasing and the water absorbability was increasing. However, generalizing all results, can be stated, that keeping the same level of concrete workability there are possibilities to reduce water and cement ratio and it will give strength loss and water absorbability growth compensation.

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“…The major advantage of using waste PET bottles as aggregates is the reduction of the self-weight of the concrete because of its low unit weight [5]. Several experimental studies have addressed the technical viability of incorporating waste PET aggregate in concrete, investigating the effects of such incorporation on the mechanical and durability properties of concrete [6][7][8][9][10][11] However limited studies have been carried out for the effect of elevated temperature on concrete containing replacement of natural aggregates by waste PET aggregate [12,13].…”

Section: Introductionmentioning

confidence: 99%

The effect of elevated temperature on the lightweight concrete containing waste PET aggregate

Akçaözoğlu

2018

IJBTE

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In this study, the effect of waste PET as lightweight aggregate (WPLA) replacement with conventional aggregate on the some physical and mechanical properties and residual compressive strength of concrete was investigated. For this purpose, five different mixtures were prepared (the reference mixture and four WPLA mixtures including 30%, 40%, 50% and 60% waste PET aggregate by volume). The fresh and dry unit weights, compressive strengths, flexural-tensile strengths, water absorption and porosity ratios of the mixtures were measured. In addition the specimens exposed to elevated temperatures at 150, 300 and 450 °C and the residual compressive strengths were measured. Test results indicated that the unit weight, compressive strength and flexural-tensile strength of the specimens decreased as the amount of WPLA increased in concrete. After exposing to elevated temperature, WPLA mixtures retained their structural integrity and compressive strengths at 150 °C and 300 °C. However there was a significant decrease in the residual compressive strength values of WPLA mixtures at 450 °C.

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Post-fire mechanical performance of concrete made with selected plastic waste aggregates

Cited by 76 publications

References 39 publications

Study on the Compressive Behaviour of Sustainable Cement-Based Composites Under 1-Hour Direct Flame Exposure

Study on the Compressive Behaviour of Sustainable Cement-Based Composites Under 1-Hour Direct Flame Exposure

Evaluation of Suitability to Use Plastic Waste in Concrete Production

The effect of elevated temperature on the lightweight concrete containing waste PET aggregate

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