Comparative study of compression resistance in concrete using construction and demolition waste (CDW) submitted to the effect of freezing and thawing

Authors

DOI:

https://doi.org/10.6008/CBPC2318-3055.2023.001.0002

Keywords:

Concrete, Ice, Thaw, CDW

Abstract

Concrete has the most varied applications, among them, the application on cold chamber floors or locations where the climate is colder, which can cause certain pathologies. The present work aimed to evaluate the strength, durability and workability of concrete with the use of construction and demolition waste (CDW) in its composition, in comparison with the usual concrete. In addition, the objective was to evaluate the same samples in ice and thawing conditions. The study was carried out with a rich mix, using CP V cement and replacing 20% of sand with CDW. Samples were divided into 2 groups: with and without CDW. Within both groups, the specimens were subjected to cycles of freezing and thawing in a freezer at -10°C and placed in a tank with water for thawing. All bodies were exposed to compressive strength tests at the ages of 7, 14, 21 and 28 days. According to the results, it was observed that the samples with CDW in normal cure presented lower averages, in relation to the samples without CDW in its composition. On the other hand, the samples that were submitted to freezing and thawing showed greater resistances than the samples in normal cure, in which the samples without CDW presented the highest resistances. Therefore, it is concluded that both the presence of CDW in the concrete composition and the exposure to freezing and thawing influence the resistance of the materials.

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Author Biographies

Maria Brunna Mikaelly da Silva, Centro Universitário Vale do Ipojuca

Possui ensino médio segundo grau pela Escola de referência em Ensino Médio Deolinda Amaral(2015).

Anderson Laursen, Centro Universitário Vale do Ipojuca

Doutor em Ciências e Engenharia de Materiais pela Universidade Federal de Campina Grande-UFCG com ênfase em processamento de materiais cerâmicos, mestre em Ciências e Engenharia de Materiais pela Universidade Federal de Campina Grande-UFCG com ênfase em processos de soldagem. Especialista em gestão da qualidade, UNISAL (2010). Entre 2007 e 2014 atuou no setor industrial de mineração e beneficiamento de gesso com experiência nas áreas de: gestão da qualidade; pós vendas; planejamento e controle de produção; processos industriais; e assistência técnica aos clientes. Atualmente é docente do Centro Universitário do Vale do Ipojuca UNIFAVIP-YDUQS dos cursos de engenharias. Membro de Núcleos Docente Estruturante e pesquisador nas áreas de materiais e processamento.

 

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Published

2023-06-19

Issue

Vol. 11 No. 1 (2023): Engineering Sciences - Dez 2022, Jan, Fev, Mar, Abr, Mai 2023

Section

Engenharia Civil

License

Copyright (c) 2023 Engineering Sciences

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