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 |