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The suitability of solvent exchange techniques for studying the pore structure of hardened cement paste
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1989
Year
Materials SciencePore Size DistributionChemical EngineeringPore StructureEngineeringOrganic SolventsMethanol SoakingCorrosionCementationCementitious MaterialsPorosityAnalytical ChemistrySolvent Exchange TechniquesChemistryHardened Cement PasteSorel CementCement-based Construction MaterialChromatography
An examination was made of the interaction between three organic solvents (methanol, propan-2-ol and ethanol) and samples of calcium hydroxide and of hardened cement paste. The techniques used were thermogravimetric analysis, X-ray diffraction, infra-red spectroscopy and mercury intrusion porosimetry. Although there was evidence of a reaction between the solvents (particularly methanol) and cement paste during thermal analysis, there was no indication of a reaction at room temperature. The pore size distribution of vacuum-dried cement samples was unaffected by methanol soaking, and it is concluded that solvent exchange techniques are suitable for the preparation of samples for pore structure determinations.