Paper Title:
Quantitative Characterization of Effective Porosity in Cement-Based Composite Materials
  Abstract

The method of the second intrusion mercury in MIP was used to investigate the pore characteristics of hardened cement paste with w/c ratio 0.23, 0.35 and 0.53, respectively, in order to research the quantitative relationship between transport properties and pore characteristics in cement-based composite materials. The results show the second intrusion mercury could well determine the effective pore structure parameters, and effective porosity accounts for 25% to 50% of total porosity in cement paste. At the same time, the existence of the first and second peak in pore size distribution curves is confirmed by MIP, such as, the first peak in hardened cement paste with water to cement ratio 0.53 is very distinct, however, with the decrease of water to cement ratio, the first peak gradually disappears. The pore diameter corresponding to the first and second peak is critical pore diameter of capillary pore and gel pore, respectively.

  Info
Periodical
Advanced Materials Research (Volumes 163-167)
Edited by
Lijuan Li
Pages
3174-3179
DOI
10.4028/www.scientific.net/AMR.163-167.3174
Citation
G. W. Sun, J. Y. Jiang, Y. S. Zhang, C. H. Wang, "Quantitative Characterization of Effective Porosity in Cement-Based Composite Materials", Advanced Materials Research, Vols. 163-167, pp. 3174-3179, 2011
Online since
December 2010
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$32.00
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