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The Pore Structure of Hydrated Cementitious Compounds of Different Chemical Composition
Author(s) -
BENTUR AR
Publication year - 1980
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1980.tb10196.x
Subject(s) - portland cement , porosimetry , cementitious , porosity , shrinkage , materials science , cement , mesoporous material , composite material , mineralogy , chemical composition , adsorption , chemical engineering , chemistry , porous medium , organic chemistry , engineering , catalysis
The pore structure ofβ‐C 2 S, C 3 S, and portland cement pastes was investigated using mercury porosimetry and H 2 O and N 2 adsorption. The β‐C 2 S had more total macro‐ and mesoporosities than C 3 S and portland cement pastes of a similar degree of hydration. C 3 S and portland cement pastes had similar total porosities but differed in the porosity size distribution. In the mesopore range, the various test methods gave different results. These differences are discussed on the basis of the various models proposed for cement paste. It is shown that shrinkage could be correlated with the volume of pores <0.03 μm, but not with total porosity.