Túlio Hallak Panzera
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Featured researches published by Túlio Hallak Panzera.
Journal of Composite Materials | 2013
Leandro José da Silva; Túlio Hallak Panzera; V. R. Velloso; Juan Carlos Campos Rubio; André Luiz Christoforo; Fabrizio Scarpa
The study describes a design of experiment analysis performed on hybrid polymeric composites reinforced with unidirectional banana fibres and silica microparticles. Maleic anhydride was also evaluated as a chemical additive to improve the adhesion between phases. A full factorial design (2231) and the analyses of variance were performed to identify the significance of the microstructure constituents against different mechanical and physical properties in a total population of 120 biocomposites samples. The microstructure parameters considered were fibre volume fraction (30% and 50%), silica addition (0%, 20u2009wt% and 33u2009wt%) and maleic anhydride addition (0% and 2u2009wt%). The mechanical and physical properties of the composite considered as factorial and analyses of variance responses were the apparent density, apparent porosity, water absorption, modulus of elasticity and mechanical strength under tensile and flexural loading. The design of experiment analysis has shown that the volume fraction of the fibres significantly affects all responses, with the composite made from 30% of banana fibres exhibiting superior mechanical strength and modulus of elasticity. While the addition of silica has featured a statistically noticeable contribution to the porosity and the water absorption, the presence of the particles did not provide any significant enhancement to the composites mechanical strength. Maleic anhydride showed a significant contribution to the apparent density, water absorption and flexural modulus, not improving the adhesion between phases, with a consequent decrease of the Young’s modulus and increase of the water absorption within the composites.
Advanced Fibre-Reinforced Polymer (FRP) Composites for Structural Applications | 2013
Túlio Hallak Panzera; André Luis Christoforo; P.H. Ribeiro Borges
Abstract: Portland cement concrete is a brittle material. The main reason for incorporating fibres into a cement matrix is to improve the cracking deformation characteristics, increasing not only the toughness, impact and tensile strength, but also eliminating temperature and shrinkage cracks. Several different types of fibres have been used to reinforce cement-based materials. This chapter briefly discusses the characteristics of fibre-reinforced concrete (FRC), reporting the effect of the fibres on the physico-chemical and mechanical properties. It also presents some of the recent research and future perspectives of FRC.
Journal of Materials in Civil Engineering | 2016
Anine Cristina Detomi; Sergio Luiz Moni Ribeiro Filho; Túlio Hallak Panzera; Marco A. Schiavon; Vania R V Silva; Fabrizio Scarpa
AbstractThis work investigates the mechanical behavior of cementitious composites (mortar) when quartz inclusions are totally or partially replaced with polyethylene terephthalate (PET) particles. A full factorial design is performed to identify the effect of the water/cement ratio and the range of quartz particles size used in the replacement on the different mechanical and physical parameters (bulk density, apparent porosity, water absorption, oxygen permeability, compressive strength, and modulus of elasticity). The results show a general reduction of the mechanical properties when the replacement with quartz particles is put in place. The composites made by replacing the coarse quartz particles showed acceptable mechanical properties for nonstructural civil engineering applications, with a significant amount of PET recycling to be used as aggregates for some specific end-user cases.
Sustainable Cities and Society | 2015
Fábio de Paiva Cota; Caio Cesar Damas Melo; Túlio Hallak Panzera; Aloizio Geraldo Araújo; Paulo Henrique Ribeiro Borges; Fabrizio Scarpa
Polymer Composites | 2018
Luciano Machado Gomes Vieira; Júlio Cesar dos Santos; Túlio Hallak Panzera; André Luiz Christoforo; Valdir Mano; Juan Carlos Campos Rubio; Fabrizio Scarpa
Polymer Testing | 2017
Rubens Bagni Torres; Júlio Cesar dos Santos; Túlio Hallak Panzera; André Luis Christoforo; Paulo Henrique Ribeiro Borges; Fabrizio Scarpa
Composite Structures | 2015
Luís Miguel P. Durão; Túlio Hallak Panzera; Fabrizio Scarpa; Sergio Luiz Moni Ribeiro Filho; Pablo Resende Oliveira
Physica Status Solidi B-basic Solid State Physics | 2016
H. Mohanraj; S. L M Filho Ribeiro; Túlio Hallak Panzera; Fabrizio Scarpa; Ian R Farrow; Roy Jones; Angela M Davies-Smith; Chrystel D L Remillat; Peter Walters; Hua-Xin Peng
Physica Status Solidi B-basic Solid State Physics | 2014
S. L. M. Ribeiro Filho; Thaís A. A. Silva; Lincoln Cardoso Brandão; André Luis Christoforo; Túlio Hallak Panzera; Katarzyna Boba; Fabrizio Scarpa
Construction and Building Materials | 2018
Carolina Coelho Martuscelli; Júlio Cesar dos Santos; Pablo Resende Oliveira; Túlio Hallak Panzera; Maria Teresa Paulino Aguilar; Carlos Thomas Garcia
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Sergio Luiz Moni Ribeiro Filho
Universidade Federal de São João del-Rei
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