Selected Properties of Self-Compacting Concrete with Recycled PET Aggregate

In this paper, the issue of self-compacting concrete (SCC) with the addition of polyethylene terephthalate (PET) recycled aggregate is addressed. The PET utilized was a waste fraction in the PET-bottle-recycling process. The implementation of waste in concrete mixes has a positive impact on their en...

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Bibliographic Details
Published in:Materials 2022-03, Vol.15 (7), p.2566
Main Authors: Jaskowska-Lemańska, Justyna, Kucharska, Milena, Matuszak, Jakub, Nowak, Paweł, Łukaszczyk, Wojciech
Format: Article
Language:English
Subjects:
Aggregates
Carbon dioxide
Cement
Compressive strength
Concrete construction
Concrete mixing
Construction industry
Consumption
Emissions
Environmental impact
Investigations
Mechanical properties
Modulus of elasticity
Natural resources
Nondestructive testing
Parameters
Poisson's ratio
Polyethylene terephthalate
Production increases
Quality assessment
Recycling
Self-compacting concrete
Tensile strength
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Summary:In this paper, the issue of self-compacting concrete (SCC) with the addition of polyethylene terephthalate (PET) recycled aggregate is addressed. The PET utilized was a waste fraction in the PET-bottle-recycling process. The implementation of waste in concrete mixes has a positive impact on their environmental and social profile; however, technical requirements are not necessarily met. In this investigation, PET was used as a substitute for fine aggregate in quantities ranging from 0 to 20% in increments of 5%. Both the flow properties of SCC mixes and the hardened SCC properties (compressive strength, splitting tensile strength, modulus of elasticity, and Poisson ratio) were investigated. Additionally, non-destructive tests (ultrasound and sclerometric) were performed to determine the correlation curves. The research revealed that both the flow properties and the parameters of the hardened concrete deteriorated with the PET content. Concrete with 20% PET replacement did not meet the self-compacting requirements and its compressive strength decreased by almost 50%. However, it was noted that replacing fine aggregate with PET aggregate in the amount of 5% did not significantly alter the concrete parameters and could be an attractive alternative to traditional concretes. Based on non-destructive testing, correlation curves were constructed that could be applicable to the future quality assessment of self-compacting concretes with recycled PET aggregate.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15072566