Título: | EXPERIMENTAL RESULTS OF FRACTURE PARAMETERS FOR HIGH PERFORMANCE CONCRETE | ||||||||||||||||
Autor: |
VERONICA DE SOUZA CALAND |
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Colaborador(es): |
MARTA DE SOUZA LIMA VELASCO - Orientador RICARDO AMORIM EINSFELD - Coorientador |
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Catalogação: | 04/OUT/2001 | Língua(s): | PORTUGUESE - BRAZIL |
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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. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=1995&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=1995&idi=2 [es] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=1995&idi=4 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.1995 | ||||||||||||||||
Resumo: | |||||||||||||||||
The increasing use of high performance concrete in civil
construction demands better knowledge of the behavior of
this material and the review of possible changes in the
design of structural elements, like the size effect. The
concepts of the theory of fracture mechanics for the
analysis of structures started to be used in recent days.
The fracture energy became an inherent property of the
material, and it is basic for the control of the
nominal flexural strength and the modulus of rupture.
The main purposes of this dissertation are to achieve
experimentally the fracture parameters for high performance
concrete by performing stable tests, and to carry out a
comparison with numerical and experimental results found in
literature. The methodology used for determining of these
parameters is introduced in the work.Stable three-point
bend tests were conducted in notched beams made with
unreinforced concrete. These tests comply with the
specifications given by the RILEM 50- FMC committee. The
beams were cast at PUC-Rio Structural Laboratory and the
tests were conducted at the Technology Institute (ITUC) of
this University. The tests were performed using crack mouth
opening displacement control in a closed-loop servohydraulic
Instron machine model 8502. The experiments involved the
testing of 75 singlenotched beams with four different sizes
with depths varying from 38 mm to 304 mm. The
thickness of the beams was kept constant and equal to 38
mm. The concrete had a watercement ratio varying from 0.37
to 0.25 and compressive strength between 70 MPa and 90
MPa.
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