Mechanical properties of polymer impregnated cement systems and the effect of moisture on their dimensional stability

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DOIResolve DOI: http://doi.org/10.1016/0008-8846(84)90003-6
AuthorSearch for: ; Search for:
TypeArticle
Journal titleCement and Concrete Research
ISSN0008-8846
Volume14
IssueSeptember 6
Pages78592; # of pages: 694
Subjectimpregnation; mechanical properties; cement; dimensional stability; porosity; polymerization; portland cement - silica mixtures; cement paste; methyl methacrylate monomer (mma); young's modulus; microhardness; water vapour permeation; Concrete; impregnation; propriete mecanique; ciment; stabilite dimensionnelle; porosite; polymerisation
AbstractCement matrices were prepared by autoclaving portland cement- silica mixtures having various percentages by weight of silica, with water-to-cement ratios of from 0.22 to 0.45. Normal cement paste samples were also made for comparison. Samples were heated to 100 degrees C in vacuum for 24 h before impregnation with methyl methacrylate monomer (MMA), which was then polymerized; impregnation was repeated for complete impregnation. Young's modulus and microhardness were measured as a function of volume fraction of PMMA and results compared with those obtained from similar samples conditioned to 11% RH. Autoclaved impregnated and unimpregnated specimens and room-temperature-cured cement paste specimens at both conditions were exposed to 100% RH and their length changes measured for up to four years. Permeation to water vapour in the impregnated specimens, although decreased, still occurs and impregnation increased long-term expansion on exposure. Expansion on exposure to 100% RH is much larger for D-dried than for 11% RH- conditioned matrices; the latter produced stronger bodies on impregnation.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-1256
NRC number24092
3337
NPARC number20375979
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Record identifier7babbc0e-b24d-4ced-b166-d3d3ff026f2e
Record created2012-07-23
Record modified2016-05-09
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