Logo PUC-Rio Logo Maxwell
ETDs @PUC-Rio
Estatística
Título: FRACTURE BEHAVIOR OF CEMENTITIOUS MATRIX COMPOSITES REINFORCED BY BAMBOO PULP
Autor: JANAINA BRESCANSIN
Colaborador(es): FATHI AREF IBRAHIM DARWISH - Orientador
KHOSROW GHAVAMI - Coorientador
Catalogação: 15/JUL/2003 Língua(s): PORTUGUESE - BRAZIL
Tipo: TEXT Subtipo: THESIS
Notas: [pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio.
[en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio.
Referência(s): [pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=3720&idi=1
[en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=3720&idi=2
DOI: https://doi.org/10.17771/PUCRio.acad.3720
Resumo:
As handling and manipulation of asbestos pose grave health hazards, its use in civil construction has been drastically dwindling and will in fact be completely prohibited, in a few years, in developed countries. With the need arising to find an adequate substitute, vegetable fibers and cellulosic pulps have been considered to be viable alternatives. Taking into account the fact that the process for pulp production entails the removal of impurities, such as lignin and hemicellulose, cellulosic pulps seem to be the ideal substitute to asbestos, as their use does not necessitate modifications in the cementitious matrix. Accordingly, the purpose of this work is to experimentally determine basic mechanical characteristics and pertinent fracture parameters of bamboo pulp reinforced cement. Refined and non-refined pulps were used in the proportions of 8 and 14 percent of the weight of dry cement. These percentages were adopted as they imply, according to literature, in optimizing the energy absorbed by the composite in bend loading. Evaluation of the mechanical behavior of the composites considered in this work was realized by means of compression and impact testing. Three point bend tests were also carried out using unnotched as well as notched specimens of different notch root radii. Mechanical properties such as modulus of elasticity, compressive, impact and bend strengths, and J integral at maximum load are presented and discussed in terms of pertinent microstructural and fractographic aspects of test specimens.
Descrição: Arquivo:   
COVER, ACKNOWLEDGEMENTS, RESUMO, ABSTRACT, SUMMARY AND LISTS PDF    
CHAPTER 1 PDF    
CHAPTER 2 PDF    
CHAPTER 3 PDF    
CHAPTER 4 PDF    
CHAPTER 5 PDF    
REFERENCES PDF