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A platform for research: civil engineering, architecture and urbanism
Ice formation in hardened cement paste, Part II — drying and resaturation on room temperature cured pastes
AbstractIce formation in partly dried and resaturated room temperature cured mature Portland cement paste has been measured. The measurements were carried out continuously in the temperature range from +20° C to −60° C.The results demonstrate that the drying-resaturation treatment increases the volume of large pores and the continuity of the pore system. The increase in the volume of large pores occurs at the expense of small pores and necks in the pore system.As the relative water vapor pressure at which drying takes place is decreased to 0.58, the number of continuous large pores is increased. Drying at lower relative water vapor pressures does not further increase the effect.The present findings point out the importance of the moisture history of concrete before testing such properties as water permeability and frost resistance.
Ice formation in hardened cement paste, Part II — drying and resaturation on room temperature cured pastes
AbstractIce formation in partly dried and resaturated room temperature cured mature Portland cement paste has been measured. The measurements were carried out continuously in the temperature range from +20° C to −60° C.The results demonstrate that the drying-resaturation treatment increases the volume of large pores and the continuity of the pore system. The increase in the volume of large pores occurs at the expense of small pores and necks in the pore system.As the relative water vapor pressure at which drying takes place is decreased to 0.58, the number of continuous large pores is increased. Drying at lower relative water vapor pressures does not further increase the effect.The present findings point out the importance of the moisture history of concrete before testing such properties as water permeability and frost resistance.
Ice formation in hardened cement paste, Part II — drying and resaturation on room temperature cured pastes
Bager, Dirch H. (author) / Sellevold, Erik J. (author)
Cement and Concrete Research ; 16 ; 835-844
1986-06-26
10 pages
Article (Journal)
Electronic Resource
English
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