Envoltória de resistência do Concreto Compactado com Rolo (CCR), incluindo o efeito escala
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2010-08-31
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Universidade Federal de Goiás
Resumo
The dam construction tecnology with roller compacted concrete has undergone noticeable
improvements in the areas of concrete technology and enforcement procedure. One can cite
the enrichment of roller compacted concrete dam face and the whole sequence leading to
obtaining such enrichment, in a short-term enforcement, by the least cost and with the
guarantee of the security needed, as one of those remarkable improvements. This work,
however, tries to contribute with the theme of the properties of concrete and incorporates
basic issues of materials science to set a failure criterion to the results of combined loadings
tests performed in RCC specimens of varied sizes, made with the same dosage of Junqueira et
al. (2008). The goal is to predict the real strength of the roller compacted concrete dam.
Therefore, tests of diametral compression, uniaxial compression, triaxial compression and
direct shear tests were performed in RCC specimens of different sizes. The results of such
tests were presented using tables and graphs which showed a fall of resistance with increasing
the size of the specimen tested face of such loadings. Finally, the data from all trials of this
work and of Junqueira et al. (2008) were gathered and studied, so as to increase the precision
of the strength envelope of Hoek and Brown set.
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Citação
JUNQUEIRA, Pedro João Barbosa. Envoltória de resistência do Concreto Compactado com Rolo (CCR), incluindo o efeito escala. 2010. 200 f. Dissertação (Mestrado em Geotecnia, Estruturas e Construção Civil) - Universidade Federal de Goiás, Goiânia, 2010.