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Pore Structure Damage in Blended Cements Caused by Mercury Intrusion
Author(s) -
FELDMAN R. F.
Publication year - 1984
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.1151-2916.1984.tb19142.x
Subject(s) - cement , gas pycnometer , porosity , materials science , mercury (programming language) , fly ash , portland cement , ground granulated blast furnace slag , composite material , mercury intrusion porosimetry , intrusion , mineralogy , porous medium , geology , geochemistry , computer science , programming language
Hydrated blast furnace slag and fly‐ash cement blends have been shown to be very impermeable. Porosity measurements of these materials by methanol and helium pycnometry have been less than the values obtained by Hg intrusion to 410 MPa. Results of the three techniques for hydrated portland cement were the same. A technique was used in which mercury could be removed by distillation after Hg intrusion, and intrusion was then repeated. This was performed on several cements and cement blends. Pore‐size distribution for the hydrated cement changed marginally but both blended materials changed markedly, displaying a coarser pore distribution. It was concluded that the latter bodies are composed of relatively large, but discontinuous pores, into which Hg enters by breaking through the pore structure.