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dc.contributor.author Guimarães, André Tavares da Cunha
dc.contributor.author Almenar, Guillem de Vera
dc.contributor.author Rodrigues, Felipe Trez
dc.contributor.author Gil, Carlos Antón
dc.contributor.author Climent, Miguel Angel
dc.date.accessioned 2015-07-03T20:15:55Z
dc.date.available 2015-07-03T20:15:55Z
dc.date.issued 2012
dc.identifier.citation GUIMARÂES, André Tavares da Cunha et al. Comparison between dcrit considering the abrupt variation and inflexion in the concrete mercury intrusion porosimetry curve. Experimental Techniques, 2012. Disponível em: <http://onlinelibrary.wiley.com/doi/10.1111/ext.12002/epdf>. Acesso em: 03 jul. 2015. pt_BR
dc.identifier.uri http://repositorio.furg.br/handle/1/5097
dc.description.abstract Mercury intrusion porosimetry (MIP) has been widely used to evaluate the quality of concrete through the pore size distribution parameters. Two of these parameters are the critical pore diameter (Dcrit) and the percentage of the most interconnected net of pores compared to the total volume of pores. Some researchers consider Dcrit as the diameter obtained from the inflexion point of the cumulative mercury intrusion curve while others consider Dcrit as the diameter obtained from the point of abrupt variation in the same curve. This study aims to analyze two groups of concretes of varying w/c ratios, one cast with pozzolanic cement and another with high initial strength cement, in order to determine which of these diameters feature a better correlation with the quality parameters of the concretes. The concrete quality parameters used for the evaluations were (1) the w/c ratios and (2) chloride diffusion coefficients measured at approximately 90 days. MIP cumulative distributions of the same concretes were also measured at about 90 days, and Dcrit values were determined (1) from the point of abrupt variation and alternatively, (2) from the inflexion point of each of these plots. It was found that Dcrit values measured from the point of abrupt variation were useful indicators of the quality of the concrete, but the Dcrit values based on the inflexion points were not. Hence, it is recommended that Dcrit and the percentage of the most interconnected volume of pores should be obtained considering the point of abrupt variation of the cumulative curve of pore size distribution. pt_BR
dc.language.iso eng pt_BR
dc.rights open access pt_BR
dc.title Comparison between dcrit considering the abrupt variation and inflexion in the concrete mercury intrusion porosimetry curve pt_BR
dc.type article pt_BR
dc.identifier.doi 10.1111/ext.12002 pt_BR


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