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Master's Dissertation
DOI
https://doi.org/10.11606/D.18.2016.tde-24102016-111618
Document
Author
Full name
Reginaldo Araujo Devito
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2003
Supervisor
Committee
Vecchia, Francisco Arthur da Silva (President)
Ferreira, Osny Pellegrino
Savastano Júnior, Holmer
Title in Portuguese
Estudos físicos e mecânicos de telhas de cimento de escória de alto-forno reforçado com fibras celulósicas residuais
Keywords in Portuguese
Escória de alto-forno
Fibras vegetais residuais
Reciclagem
Telha
Abstract in Portuguese
A presente pesquisa tem como objetivo desenvolver um novo elemento de cobertura, compatível com o meio ambiente: telhas de cimento alternativo reforçado com fibras celulósicas. Para tanto, foram utilizadas matérias-primas consideradas resíduos industriais (cimento de escória de alto-forno e rejeito de polpa de celulose de eucalipto) para obtenção de pastas cimentícias reforçadas. Os compósitos foram produzidos por dispersão prévia das fibras em água, mistura do compósito em argamassadeira convencional, adensamento por vibração, moldagem em fôrmas, seguida de cura úmida. Foram moldadas placas planas de diferentes formulações de matrizes cimentícias, com as matérias-primas alternativas disponíveis. Com base nos melhores resultados dessa fase preliminar, foram produzidas duas séries de telhas tipo romana "capa canal". Foram avaliados o desempenho físico-mecânico, os custos de produção e o comportamento térmico das telhas. Os resultados revelaram a potencialidade dos compósitos obtidos na produção de fibrocimentos alternativos, por meio de técnicas simples e de baixo consumo de energia, direcionados à autoconstrução urbana e rural de baixo custo.
Title in English
Physical and mechanical studies of roofing tiles made of blast furnace slag cement reinforced with residual cellulose fibers
Keywords in English
Blast furnace slag cement
Recycling
Residual vegetable fibers
Roofing tiles
Abstract in English
The objective of this study was to develop a new roofing material that would be compatible with the environment: roofing tiles made of alternative cement reinforced with cellulose fibers. Industrial waste materials were used as raw materials (blast furnace slag cement and waste eucalyptus cellulose pulp) to obtain reinforced cement pastes. The composites were produced by previously dispersing the fibers in water, mixing the composite in a conventional cement-mixer, compaction by vibration, shaping them in molds, followed by moist curing. Flat sheets were molded using different formulations of cement matrixes with the alternative raw materials avaiable. Based on the best results from this preliminary phase, two series of Roman tiles for roofing were produced. The physical and mechanical performance, the cost of production, and the thermal behavior of the tiles were evaluated. The results revealed the potential of composites made of alternative fiber-cements, using simple techniques and with low energy consumption, in urban and rural areas for low-cost self-construction.
 
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Publishing Date
2016-10-24
 
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