The effect of desiccation on the porosity and pore structure of freeze dried hardened portland cement and slag-blended pastes

Mercury porosimetry studies of hardened cement pastes of Portland cement and blast furnace slag blended cements have been conducted after freeze drying cured samples. The samples have been aged after freeze drying in a desiccating atmosphere so as to evaluate the effect of aging on the pore structur...

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Bibliographic Details
Published in:Cement and concrete research 1986, Vol.16 (1), p.74-78
Main Authors: Kumar, Amitabha, Roy, Della M.
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Cement concrete constituents
Cements
Exact sciences and technology
Materials
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Summary:Mercury porosimetry studies of hardened cement pastes of Portland cement and blast furnace slag blended cements have been conducted after freeze drying cured samples. The samples have been aged after freeze drying in a desiccating atmosphere so as to evaluate the effect of aging on the pore structure of freeze dried hardened Portland cement paste prepared with and without admixtures. Results indicate that after 24 hours of freeze drying the hardened paste shows negligible change in porosity and pore structure with aging in a desiccating atmosphere.
ISSN:0008-8846
1873-3948
DOI:10.1016/0008-8846(86)90070-0