Frost action in cement in the presence of de-icers

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Journal titleCement and Concrete Research
Pages351356; # of pages: 6
Subjecteffects of frost; cement; frost preventing agents; Concrete; action du gel; ciment; antigelif
AbstractCement samples impregnated with water and with 5, 9, 13, 18 and 26 per cent NaC1 solutions have been subjected to temperature cycles between +5 and -70 degrees C and changes in their dimensions and heat content determined. The results are consistent with the theory proposed by the author for frost action in the absence of chemicals and with the findings of a study of phase transitions of NaC1 solutions adsorbed in porous glass. These observations can be explained by the fact that solution contained in the pores, when cooled below the bulk freezing point, remains in a liquid-like state. This condition gives rise to instability, which is eliminated by mass transfer. If the process cannot proceed at a required rate, mechanical damage occurs. The well-known aggravating effect of dissolved chemicals is due, primarily, to the increased degree of saturation they promote.
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AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number15232
NPARC number20374470
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Record identifier5817f9d2-15a6-426c-83ee-fe804caef59e
Record created2012-07-23
Record modified2016-05-09
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