?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F20957%2F&rft.title=Investigation+on+Properties+of+Cementitious+Materials+Reinforced+by+Graphene&rft.creator=Fan%2C+Zhou&rft.description=Graphene+nanoplatelet+has+been+found+to+be+able+to+improve+the+mechanical+and+electrical+properties+of+concrete+so+that+it+can+make+the+concrete+to+be+a+%22smart+material%22.+However%2C+its+effects+on+some+other+properties+of+graphene+additive+concrete%2C+e.g.%2C+frost+and+corrosion+resistance%2C+remain+unknown.+Therefore%2C+it+cannot+be+directly+applied+in+the+construction+practice+without+further+investigation.+The+purpose+of+this+research+is+to+study+the+frost+resistance+and+corrosion+resistance+of+graphene+additive+mortar+as+well+as+the+corresponding+compressive+strength+enhancement+induced+by+the+addition+of+graphene.+Here+the+tests+are+performed+on+5+groups+of+mortar+specimens+with+the+same+mix+proportion.+One+group+of+them+were+cast+by+normal+mortar%2C+while+each+of+the+other+four+groups+was+enriched+by+an+equal+amount+of+C+grade+graphene+particles+(GC)%2C+C+grade+oxidative+graphene+particles+(GOC)%2C+M+grade+graphene+particles+(GM)+and+M+grade+oxidative+graphene+particles+(GOM)%2C+respectively.+The+dimension+of+the+C+grade+graphene+nanoplatelets+is+smaller+than+that+of+M+grade+graphene+nanosheets.+After+28+days+curing%2C+compressive+strength+test%2C+Young's+modulus+and+Poisson+ratio+measurement+test%2C+water+absorption+test%2C+300+cycles+freezing+and+thawing+test+and+5-month+corrosion+test+were+performed.+The+results+exhibit+that+the+performance+of+the+GOM+group+is+the+best+among+all+of+the+experimental+groups.+The+enhancement+of+the+compressive+strength+of+the+GOM+group+is+13.2%25+compared+to+the+normal+mortar.+The+corrosion+and+frost+resistance+of+cement+are+both+slightly+improved+by+adding+the+M+grade+oxidative+graphene+particles.+In+order+to+study+the+corresponding+mechanism+from+the+microstructure+of+concrete%2C+atomic+force+microscopy%2C+Raman+spectroscopy+and+scanning+electron+microscopy+were+implemented+in+this+research.+The+results+of+this+study+indicate+that+the+oxidative+graphene+nanoplatelets+can+effectively+reduce+the+porosity+of+the+cementitious+material+and+therefore+increase+its+strength+as+well+as+the+corrosion+and+the+frost+resistance.&rft.date=2014-06-16&rft.type=University+of+Pittsburgh+ETD&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F20957%2F1%2FInvestigation_on_Properties_of_Cementitious_Materials_Reinforced_by_Graphene_R.pdf&rft.identifier=++Fan%2C+Zhou++(2014)+Investigation+on+Properties+of+Cementitious+Materials+Reinforced+by+Graphene.++Master's+Thesis%2C+University+of+Pittsburgh.++++(Unpublished)++