Effects of plastic waste on the heat-induced spalling performance and mechanical properties of high strength concrete Rohden, Abrahão Bernardo, Camilo, Jessica Regina, Amaral, Rafaela Cristina, Oliari Garcez, Estela and Garcez, Mônica Regina 2020, Effects of plastic waste on the heat-induced spalling performance and mechanical properties of high strength concrete, Materials, vol. 13, no. 15, pp. 1-17, doi: 10.3390/ma13153262. Attached Files Name Description MIMEType Size Downloads Title Effects of plastic waste on the heat-induced spalling performance and mechanical properties of high strength concrete Author(s) Rohden, Abrahão Bernardo Camilo, Jessica Regina Amaral, Rafaela Cristina Oliari Garcez, Estela orcid.org/0000-0002-9586-472X Garcez, Mônica Regina Journal name Materials Volume number 13 Issue number 15 Article ID 3262 Start page 1 End page 17 Total pages 17 Publisher MDPI Place of publication Basel, Switzerland Publication date 2020 ISSN 1996-1944 Keyword(s) plastic waste high strength concrete spalling residual mechanical properties Summary This paper investigates a potential application of hard-to-recycle plastic waste as polymeric addition in high strength concrete, with a focus on the potential to mitigate heat-induced concrete spalling and the consequent effects on the mechanical properties. The waste corresponds to soft and hard plastic, including household polymers vastly disposed of in landfills, although technically recyclable. Mechanical and physical properties, cracking, mass loss, and the occurrence of spalling were assessed in high strength concrete samples produced with either plastic waste or polypropylene fibers after 2-h exposure to 600 °C. The analysis was supported by Scanning Electron Microscopy and X-Ray Computed Tomography images. The plastic waste is composed of different polymers with a thermal degradation between 250 to 500 °C. Polypropylene (PP) fibers and plastic waste dispersed in concrete have proved to play an essential role in mitigating heat-induced concrete spalling, contributing to the release of internal pressure after the polymer melting. The different morphology of plastic waste and polypropylene fibers leads to distinct mechanisms of action. While the vapor pressure dissipation network originated by polypropylene fibers is related to the formation of continuous channels, the plastic waste seems to cause discontinuous reservoirs and fewer damages into the concrete matrix. The incorporation of plastic waste improved heat-induced concrete spalling performance. While 6 kg/m3 of plastic increased the mechanical performance after exposure to high temperature, the incorporation of 3 kg/m3 resulted in mechanical properties comparable to the reference concrete. Language eng DOI 10.3390/ma13153262 Indigenous content off Field of Research 03 Chemical Sciences 09 Engineering HERDC Research category C1 Refereed article in a scholarly journal Free to Read? Yes Persistent URL http://hdl.handle.net/10536/DRO/DU:30140425 Document type: Journal Article Collections: Faculty of Science, Engineering and Built Environment School of Engineering Open Access Collection Related Links Link Description Link to full-text (open access)     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au. Versions Version Filter Type Fri, 24 Jul 2020, 10:40:46 EST Sat, 25 Jul 2020, 05:00:18 EST Sat, 25 Jul 2020, 06:04:33 EST Mon, 27 Jul 2020, 08:38:28 EST Tue, 28 Jul 2020, 06:06:14 EST Wed, 29 Jul 2020, 13:18:12 EST Thu, 20 Aug 2020, 16:37:13 EST Thu, 20 Aug 2020, 16:40:02 EST Thu, 20 Aug 2020, 16:40:53 EST Sat, 05 Sep 2020, 02:41:11 EST Sat, 05 Sep 2020, 02:42:55 EST Filtered Full Citation counts:   Cited 0 times in TR Web of Science Cited 0 times in Scopus Search Google Scholar Access Statistics: 46 Abstract Views, 2 File Downloads  -  Detailed Statistics Created: Fri, 24 Jul 2020, 10:40:46 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.