Water sorption characteristics of GRP composite : effect of outdoor weathering

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AuthorSearch for:
TypeArticle
Journal titlePolymer Composites
ISSN0272-8397
Volume2
Issue1
Pages1317; # of pages: 5
Subjectpolymeric materials; glass fibres; water absorption; weathering; physical changes; Fibre-reinforced polymers (FRP); materiau polymerique; fibre de verre; absorption d' eau; action des intemperies; alteration physique
AbstractThe complete sorption-desorption equilibrium isotherms determined at 23 degrees C indicate that glass fiber- reinforced polymer (GRP) sheets weathered outdoors for 3 years absorb larger amounts of water vapor than the non- weathered sheets. Sorption and desorption kinetic results at 23 degrees C and two levels of relative pressure (p/p[ 0] = 0.80 and p/p[0] = 0.975) show that the weathered sheets absorb water vapor at considerably higher rates than the non- weathered sheets. Larger amounts of sorbed water, and faster sorption and desorption will result in respectively greater magnitudes and higher rates of dimensional changes ( swelling and shrinking). This accelerates the overall effects of environmentally exerted stress-fatigue on the GRP composite.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-955
NRC number19018
93
NPARC number20331363
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Record identifier02696f78-cec6-41c1-8a4d-fee1f1f98056
Record created2012-07-18
Record modified2016-05-09
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