Extrudability of cement-based composites reinforced with curaua (Ananas erectifolius) or polypropylene fibers

Autor(es)

Teixeira, R. S. ^[1] ; Santos, S. F. ^[2] ; Christoforo, A. L. ^[3] ; Savastano, Jr., H. ^[4] ; Lahr, F. A. R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Struct Engn, Sao Carlos, SP - Brazil

^[2] Sao Paulo State Univ, Sch Engn, Dept Mat & Technol, UNESP, Guaratingueta, SP - Brazil

^[3] Fed Univ Sao Carlos UFSCAR, Dept Civil Engn, Sao Carlos, SP - Brazil

^[4] Univ Sao Paulo, Dept Biosyst Engn, Pirassununga, SP - Brazil

• Tipo de documento: Artigo de Revisão
• Fonte: CONSTRUCTION AND BUILDING MATERIALS; v. 205, p. 97-110, APR 30 2019.
• Citações Web of Science: 1

Resumo

The aim of this research was to evaluate the influence of the curaua or polypropylene fibers on rheological properties of fresh cementitious paste. The variables were the percentage of fiber content 1 wt% or 2 wt% and the length of the curaua or polypropylene fibers: 6 or 10 mm, but it was also prepared paste without fibers as reference. Squeeze flow and ram extrusion tests were carried out to analyze the flow of the pastes. The hardened paste was evaluated by X-ray microtomography to observe the orientation of the fibers inside the paste. Curaud fiber led to higher force of extrusion and lower displacement of the fresh cement paste at the squeeze flow test and increased the pressure at the ram extrusion test in relation to polypropylene fibers, independently of the content and length. However, length of the same fiber presented higher influence on mixture flow than fiber content. (C) 2019 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 13/03823-8 - Parâmetros reológicos do processo e sua influência sobre o desempenho de fibrocimento extrudados
• Beneficiário: Holmer Savastano Junior
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/51467-3 - Agroindustrial wastes and their potential use as appropriate materials for housing and infraestructure (Agrowaste)
• Beneficiário: Holmer Savastano Junior
• Modalidade de apoio: Auxílio à Pesquisa - Temático