Evaluation of efficiency factor of a self-compacting lightweight concrete with rubber and expanded clay contents

Autor(es)

Angelin, Andressa F. ^[1] ; Cecche Lintz, Rosa C. ^[1] ; Osorio, Wislei R. ^[2] ; Gachet, Luisa A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Technol, FT, UNICAMP, Paschoal Marmo St 1888, BR-13484332 Limeira, SP - Brazil

^[2] Univ Estadual Campinas, Sch Appl Sci, Res Grp Mfg Adv Mat CPMMA, UNICAMP, FCA, Pedro Zaccaria St 1300, BR-13484350 Limeira, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CONSTRUCTION AND BUILDING MATERIALS; v. 257, OCT 10 2020.
• Citações Web of Science: 0

Resumo

During the last 10 years, the used of distinct mineral, plasticizing additives, and aggregates into self-compact concrete (SCC) has been widely investigated. A self-compact lightweight concrete (SCLC) is produced using porous aggregates, while a self-compact rubberized concrete (SCRC) includes rubber-based contents into composition. Interesting properties such as high fluidity and cohesion, low density and as mechanical strength are attained. This investigation is focused on the development of a SCLC with expanded clay content, and five distinct mixtures are proposed. Based on the attained efficiency factor results (i.e. compressive strength per specific mass), the mixture for the production of self-compacting lightweight rubberized concrete (SCLRC) is selected. Three different percentages of utilized sand, i.e., of about 5, 10 and 15% (in mass) are replaced with the waste-tire rubber contents. The obtained fresh and hardened properties and a cost analysis are discussed. It is found that both the fresh properties and interfacial transition zone (ITZ) of the concrete matrix are improved. The cohesion between paste and particles is improved, while the rubber content decreases the density. It is induced that a friendly-environmentally aspect associated with economical feasibility is attained. (C) 2020 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 18/14945-0 - Concreto autoadensável leve com argila expandida e poliestireno expandido
• Beneficiário: Luísa Andréia Gachet
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/12076-5 - Estudo da absorção acústica de barreiras de concreto contendo resíduos de borracha e vermiculita
• Beneficiário: Rosa Cristina Cecche Lintz
• Modalidade de apoio: Auxílio à Pesquisa - Regular