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dc.contributor.authorSouza Filho, Aloysiopor
dc.contributor.authorParveen, Shamapor
dc.contributor.authorRana, Sohelpor
dc.contributor.authorVanderlei, Romelpor
dc.contributor.authorFangueiro, Raúlpor
dc.description.abstractThis paper reports new hierarchical cementitious composites developed using microcrystalline cellulose (MCC), sisal fibers and cetyltrimethylammonium bromide (CTAB) as the dispersing agent. MCC was dispersed in water without and with CTAB at different concentrations using ultrasonication and the optimum CTAB concentration for achieving homogeneous and stable MCC suspensions was found to be 40%. Hierarchical composites were fabricated using MCC (0.1–1.5 wt% of cement), sisal fibers (20 mm, 0.25% and 0.50 wt% of cement), 40% CTAB and tri-butyl phosphate as the defoaming agent. Mechanical strengths of composites improved significantly at 0.1 wt% MCC, which along with 0.5% sisal fibers improved compressive and flexural strengths by ~ 24% and ~ 18%, respectively. The hybrid reinforcement exhibited a synergistic effect on the fracture behavior of composites improving the fracture energy up to 40%. Hierarchical composites also showed improved fiber-matrix bonding, lower porosity and water absorption, superior hydration, carbonation resistance and durability up to 90 ageing cyclespor
dc.description.sponsorshipThe authors gratefully acknowledge the funding by Arauca´ria Foundation to Support Scientific and Technological Development of the State of Parana´ under grants CP20/2013, Department of Civil Engineering of Apucarana Campus—Federal University of Technology—Parana´ (UTFPR), State University of Maringa´ (UEM)—Brazil, Fibernamics, Fibrous Materials Research Group and University of Minho—Guimarães, Portugal, Project UID/ CTM/00264/2019 of 2C2T—Centro de Ciência e Tecnologia Têxtil, funded by National Founds through FCT/MCTES and University Beira Interior—Covilhã, Portugal.por
dc.relationinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FCTM%2F00264%2F2019/PTpor
dc.subjectFiber/matrix bondpor
dc.subjectMechanical propertiespor
dc.subjectReinforced cement/plasterpor
dc.titleMicro-structure and mechanical properties of microcrystalline cellulose-sisal fiber reinforced cementitious composites developed using cetyltrimethylammonium bromide as the dispersing agentpor
dc.subject.wosScience & Technologypor
Appears in Collections:DET/2C2T - Artigos em revistas internacionais com arbitragem científica

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8_2021_Microstructure-and-mechanical-properties-of-microcrystalline-cellulosesisal-fiber-reinforced-cementitious-composites-developed-using-cetyltrimethylammonium-bromide-as-the-dispersing-agentCellulose.pdfMicro-structure and mechanical properties of microcrystalline cellulose-sisal fiber reinforced cementitious composites developed using cetyltrimethylammonium bromide as the dispersing agent3,88 MBAdobe PDFView/Open

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