building material - wikipedia, the free encyclopedia.pdf

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Concrete and metal rebar used to build a floor Building material From Wikipedia, the free encyclopedia Building material is any material which is used for construction purposes. Many naturally occurring substances, such as clay, rocks, sand, and wood, even twigs and leaves, have been used to construct buildings. Apart from naturally occurring materials, many manmade products are in use, some more and some less synthetic. The manufacture of building materials is an established industry in many countries and the use of these materials is typically segmented into specific specialty trades, such as carpentry, insulation, plumbing, and roofing work. They provide the makeup of habitats and structures including homes. [1] Contents 1 The total cost of building materials 1.1 Economic costs 1.2 Ecological costs 1.3 Energy costs 1.4 Social costs 2 Naturally occurring substances 2.1 Brush 2.2 Ice and snow 2.3 Mud and clay 2.3.1 Wetlaid clay walls 2.3.2 Structural clay blocks and bricks 2.4 Sand 2.5 Stone or rock 2.6 Thatch 2.7 Wood and timber 3 Manmade substances 3.1 Fired bricks and clay blocks 3.2 Cement composites 3.3 Concrete 3.4 Fabric 3.5 Foam 3.6 Glass 3.7 Gypcrete 3.8 Metal 3.9 Plastics 3.10 Papers and membranes 3.11 Ceramics 4 Building products 5 Testing and certification 6 See also 7 References 8 External links The total cost of building materials In history there are trends in building materials from being: natural to becoming more manmade and composite; biodegradable to imperishable; indigenous (local) to being transported globally; repairable to disposable; and chosen for increased levels of firesafety. These trends tend to increase the initial and long term economic, ecological, energy, and social costs of building materials. Economic costs The initial economic cost of building materials is the purchase price. This is often what governs decision making about what materials to use. Sometimes people take into consideration the energy savings or durability of the materials and see the value of paying a higher initial cost in return for a lower lifetime cost. For example an asphalt shingle roof costs less than a metal roof to install, but the metal roof will last longer so the lifetime cost is less per year. Risks when considering lifetime cost of a material is if the building is damaged such as by fire or wind, or if the material is not as durable as advertised. The cost of materials should be taken into consideration to bear the risk to buy combustive materials to enlarge the lifetime. It is said that, 'if it must be done, it must be done well'. Ecological costs

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  • 5/23/2015 BuildingmaterialWikipedia,thefreeencyclopedia

    http://en.wikipedia.org/wiki/Building_material 1/7

    Concreteandmetalrebarusedtobuildafloor

    BuildingmaterialFromWikipedia,thefreeencyclopedia

    Buildingmaterialisanymaterialwhichisusedforconstructionpurposes.Manynaturallyoccurringsubstances,suchasclay,rocks,sand,andwood,eventwigsandleaves,havebeenusedtoconstructbuildings.Apartfromnaturallyoccurringmaterials,manymanmadeproductsareinuse,somemoreandsomelesssynthetic.Themanufactureofbuildingmaterialsisanestablishedindustryinmanycountriesandtheuseofthesematerialsistypicallysegmentedintospecificspecialtytrades,suchascarpentry,insulation,plumbing,androofingwork.Theyprovidethemakeupofhabitatsandstructuresincludinghomes.[1]

    Contents

    1Thetotalcostofbuildingmaterials1.1Economiccosts1.2Ecologicalcosts1.3Energycosts1.4Socialcosts

    2Naturallyoccurringsubstances2.1Brush2.2Iceandsnow2.3Mudandclay

    2.3.1Wetlaidclaywalls2.3.2Structuralclayblocksandbricks

    2.4Sand2.5Stoneorrock2.6Thatch2.7Woodandtimber

    3Manmadesubstances3.1Firedbricksandclayblocks3.2Cementcomposites3.3Concrete3.4Fabric3.5Foam3.6Glass3.7Gypcrete3.8Metal3.9Plastics3.10Papersandmembranes3.11Ceramics

    4Buildingproducts5Testingandcertification6Seealso7References8Externallinks

    Thetotalcostofbuildingmaterials

    Inhistorytherearetrendsinbuildingmaterialsfrombeing:naturaltobecomingmoremanmadeandcompositebiodegradabletoimperishableindigenous(local)tobeingtransportedgloballyrepairabletodisposableandchosenforincreasedlevelsoffiresafety.Thesetrendstendtoincreasetheinitialandlongtermeconomic,ecological,energy,andsocialcostsofbuildingmaterials.

    Economiccosts

    Theinitialeconomiccostofbuildingmaterialsisthepurchaseprice.Thisisoftenwhatgovernsdecisionmakingaboutwhatmaterialstouse.Sometimespeopletakeintoconsiderationtheenergysavingsordurabilityofthematerialsandseethevalueofpayingahigherinitialcostinreturnforalowerlifetimecost.Forexampleanasphaltshingleroofcostslessthanametalrooftoinstall,butthemetalroofwilllastlongersothelifetimecostislessperyear.Riskswhenconsideringlifetimecostofamaterialisifthebuildingisdamagedsuchasbyfireorwind,orifthematerialisnotasdurableasadvertised.Thecostofmaterialsshouldbetakenintoconsiderationtobeartherisktobuycombustivematerialstoenlargethelifetime.Itissaidthat,'ifitmustbedone,itmustbedonewell'.

    Ecologicalcosts

  • 5/23/2015 BuildingmaterialWikipedia,thefreeencyclopedia

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    ViewofagroupofMohavesinabrushhut

    SodbuildingsinIceland

    Pollutioncostscanbemacroandmicro.Themacro,environmentalpollutionofextractionindustriesbuildingmaterialsrelyonsuchasmining,petroleum,andloggingproduceenvironmentaldamageattheirsourceandintransportationoftherawmaterials,manufacturing,transportationoftheproducts,retailing,andinstallation.Anexampleofthemicroaspectofpollutionistheoffgassingofthebuildingmaterialsinthebuildingorindoorairpollution.RedListbuildingmaterialsarematerialsfoundtobeharmful.Alsothecarbonfootprint,thetotalsetofgreenhousegasemissionsproducedinthelifeofthematerial.Alifecycleanalysisalsoincludesthereuse,recycling,ordisposalofconstructionwaste.Twoconceptsinbuildingwhichaccountfortheecologicaleconomicsofbuildingmaterialsaregreenbuildingandsustainabledevelopment.

    Energycosts

    Initialenergycostsincludetheamountofenergyconsumedtoproduce,deliverandinstallthematerial.Thelongtermenergycostistheeconomic,ecological,andsocialcostsofcontinuingtoproduceanddeliverenergytothebuildingforitsuse,maintenance,andeventualremoval.Theinitialembodiedenergyofastructureistheenergyconsumedtoextract,manufacture,deliver,install,thematerials.Thelifetimeembodiedenergycontinuestogrowwiththeuse,maintenance,andreuse/recycling/disposalofthebuildingmaterialsthemselvesandhowthematerialsanddesignhelpminimizethelifetimeenergyconsumptionofthestructure.

    Socialcosts

    Socialcostsareinjuryandhealthofthepeopleproducingandtransportingthematerialsandpotentialhealthproblemsofthebuildingoccupantsifthereareproblemswiththebuildingbiology.Globalizationhashadsignificantimpactsonpeoplebothintermsofjobs,skills,andselfsufficiencyarelostwhenmanufacturingfacilitiesareclosedandtheculturalaspectsofwherenewfacilitiesareopened.Aspectsoffairtradeandlaborrightsaresocialcostsofglobalbuildingmaterialmanufacturing.

    Naturallyoccurringsubstances

    Brush

    BrushstructuresarebuiltentirelyfromplantpartsandwereusedinprimitiveculturessuchasNativeAmericans,[2]pygmypeoplesinAfrica[3]Thesearebuiltmostlywithbranches,twigsandleaves,andbark,similartoabeaver'slodge.Thesewerevariouslynamedwikiups,leantos,andsoforth.

    Anextensiononthebrushbuildingideaisthewattleanddaubprocessinwhichclaysoilsordung,usuallycow,areusedtofillinandcoverawovenbrushstructure.Thisgivesthestructuremorethermalmassandstrength.Wattleanddaubisoneoftheoldestbuildingtechniques.[4]Manyoldertimberframebuildingsincorporatewattleanddaubasnonloadbearingwallsbetweenthetimberframes.

    Iceandsnow

    Snowandoccasionallyice,[5]wereusedbytheInuitpeoplesforigloosandsnowisusedtobuiltasheltercalledaquinzhee.Icehasalsobeenusedforicehotelsasatouristattractioninnorthernclimates.[6]

    Mudandclay

    Claybasedbuildingsusuallycomeintwodistincttypes.Onebeingwhenthewallsaremadedirectlywiththemudmixture,andtheotherbeingwallsbuiltbystackingairdriedbuildingblockscalledmudbricks.

    Otherusesofclayinbuildingiscombinedwithstrawstocreatelightclay,wattleanddaub,andmudplaster.

    Wetlaidclaywalls

    Wetlaid,ordamp,wallsaremadebyusingthemudorclaymixturedirectlywithoutformingblocksanddryingthemfirst.Theamountofandtypeofeachmaterialinthemixtureusedleadstodifferentstylesofbuildings.Thedecidingfactorisusuallyconnectedwiththequalityofthesoilbeingused.Largeramountsofclayareusuallyemployedinbuildingwithcob,whilelowclaysoilisusuallyassociatedwithsodhouseorsodroofconstruction.Theothermainingredientsincludemoreorlesssand/gravelandstraw/grasses.Rammedearthisbothanoldandnewertakeoncreatingwalls,oncemadebycompactingclaysoilsbetweenplanksbyhandnowadaysformsandmechanicalpneumaticcompressorsareused.[7]

    Soil,andespeciallyclay,providesgoodthermalmassitisverygoodatkeepingtemperaturesataconstantlevel.Homesbuiltwithearthtendtobenaturallycoolinthesummerheatandwarmincoldweather.Clayholdsheatorcold,releasingitoveraperiodoftimelikestone.Earthenwallschangetemperatureslowly,soartificiallyraisingorloweringthetemperaturecanusemoreresourcesthaninsayawoodbuilthouse,buttheheat/coolnessstayslonger.[7]

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    Todatribehut

    AwoodframedhouseunderconstructioninTexas,UnitedStates

    Peoplebuildingwithmostlydirtandclay,suchascob,sod,andadobe,createdhomesthathavebeenbuiltforcenturiesinwesternandnorthernEurope,Asia,aswellastherestoftheworld,andcontinuetobebuilt,thoughonasmallerscale.Someofthesebuildingshaveremainedhabitableforhundredsofyears.[8][9]

    Structuralclayblocksandbricks

    Mudbricks,alsoknownbytheirSpanishnameadobeareancientbuildingmaterialswithevidencedatingbackthousandsofyearsBC.Compressedearthblocksareamoremoderntypeofbrickusedforbuildingmorefrequentlyinindustrializedsocietysincethebuildingblockscanbemanufacturedoffsiteinacentralizedlocationatabrickworksandtransportedtomultiplebuildinglocations.Theseblockscanalsobemonetizedmoreeasilyandsold.

    Structuralmudbricksarealmostalwaysmadeusingclay,oftenclaysoilandabinderaretheonlyingredientsused,butotheringredientscanincludesand,lime,concrete,stoneandotherbinders.Theformedorcompressedblockisthenairdriedandcanbelaiddryorwithamortarorclayslip.

    Sand

    Sandisusedwithcement,andsometimeslime,tomakemortarformasonryworkandplaster.Sandisalsousedasapartoftheconcretemix.AnimportantlowcostbuildingmaterialincountrieswithhighsandcontentsoilsistheSandcreteblock,whichisweakerbutcheaperthanfiredclaybricks.[10]

    Stoneorrock

    Rockstructureshaveexistedforaslongashistorycanrecall.Itisthelongestlastingbuildingmaterialavailable,andisusuallyreadilyavailable.Therearemanytypesofrockthroughouttheworld,allwithdifferingattributesthatmakethembetterorworseforparticularuses.Rockisaverydensematerialsoitgivesalotofprotectiontooitsmaindrawbackasamaterialisitsweightandawkwardness.Itsenergydensityisalsoconsideredabigdrawback,asstoneishardtokeepwarmwithoutusinglargeamountsofheatingresources.

    Drystonewallshavebeenbuiltforaslongashumanshaveputonestoneontopofanother.Eventually,differentformsofmortarwereusedtoholdthestonestogether,cementbeingthemostcommonplacenow.

    ThegranitestrewnuplandsofDartmoorNationalPark,UnitedKingdom,forexample,providedampleresourcesforearlysettlers.CircularhutswereconstructedfromloosegraniterocksthroughouttheNeolithicandearlyBronzeAge,andtheremainsofanestimated5,000canstillbeseentoday.GranitecontinuedtobeusedthroughouttheMedievalperiod(seeDartmoorlonghouse)andintomoderntimes.Slateisanotherstonetype,commonlyusedasroofingmaterialintheUnitedKingdomandotherpartsoftheworldwhereitisfound.

    StonebuildingscanbeseeninmostmajorcitiessomecivilizationsbuiltentirelywithstonesuchastheEgyptianandAztecpyramidsandthestructuresoftheIncacivilization.

    Thatch

    Thatchisoneoftheoldestofbuildingmaterialsknowngrassisagoodinsulatorandeasilyharvested.ManyAfricantribeshavelivedinhomesmadecompletelyofgrassesandsandyearround.InEurope,thatchroofsonhomeswereonceprevalentbutthematerialfelloutoffavorasindustrializationandimprovedtransportincreasedtheavailabilityofothermaterials.Today,though,thepracticeisundergoingarevival.IntheNetherlands,forinstance,manynewbuildingshavethatchedroofswithspecialridgetilesontop.

    Woodandtimber

    Woodhasbeenusedasabuildingmaterialforthousandsofyearsinitsnaturalstate.Today,engineeredwoodisbecomingverycommoninindustrializedcountries.

    Woodisaproductoftrees,andsometimesotherfibrousplants,usedforconstructionpurposeswhencutorpressedintolumberandtimber,suchasboards,planksandsimilarmaterials.Itisagenericbuildingmaterialandisusedinbuildingjustaboutanytypeofstructureinmostclimates.Woodcanbeveryflexibleunderloads,keepingstrengthwhilebending,andisincrediblystrongwhencompressedvertically.Therearemanydifferingqualitiestothedifferenttypesofwood,evenamongsametreespecies.Thismeansspecificspeciesarebettersuitedforvarioususesthanothers.Andgrowingconditionsareimportantfordecidingquality.

    "Timber"isthetermusedforconstructionpurposesexcepttheterm"lumber"isusedintheUnitedStates.Rawwood(alog,trunk,bole)becomestimberwhenthewoodhasbeen"converted"(sawn,hewn,split)intheformsofminimallyprocessedlogsstackedontopofeachother,timberframeconstruction,andlightframeconstruction.Themainproblemswithtimberstructuresarefireriskandmoisturerelatedproblems.

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    http://en.wikipedia.org/wiki/Building_material 4/7

    TheGliwiceRadioTower(thesecondtallestwoodenstructureintheworld)inPoland(2012).

    Apileoffiredbricks.

    Clayblocks(sometimescalledclayblockbrick)beinglaidwithanadhesiveratherthanmortar

    Inmoderntimessoftwoodisusedasalowervaluebulkmaterial,whereashardwoodisusuallyusedforfinishingsandfurniture.HistoricallytimberframestructureswerebuiltwithoakinwesternEurope,recentlydouglasfirhasbecomethemostpopularwoodformosttypesofstructuralbuilding.

    Manyfamiliesorcommunities,inruralareas,haveapersonalwoodlotfromwhichthefamilyorcommunitywillgrowandharvesttreestobuildwithorsell.Theselotsaretendedtolikeagarden.Thiswasmuchmoreprevalentinpreindustrialtimes,whenlawsexistedastotheamountofwoodonecouldcutatanyonetimetoensuretherewouldbeasupplyoftimberforthefuture,butisstillaviableformofagriculture.

    Manmadesubstances

    Firedbricksandclayblocks

    Bricksaremadeinasimilarwaytomudbricksexceptwithoutthefibrousbindersuchasstrawandarefired("burned"inabrickclamporkiln)aftertheyhaveairdriedtopermanentlyhardenthem.Kilnfiredclaybricksareaceramicmaterial.Firedbrickscanbesolidorhavehollowcavitiestoaidindryingandmakethemlighterandeasiertotransport.Theindividualbricksareplaceduponeachotherincoursesusingmortar.Successivecoursesbeingusedtobuildupwalls,arches,andotherarchitecturalelements.Firedbrickwallsareusuallysubstantiallythinnerthancob/adobewhilekeepingthesameverticalstrength.Theyrequiremoreenergytocreatebutareeasiertotransportandstore,andarelighterthanstoneblocks.RomansextensivelyusedfiredbrickofashapeandtypenowcalledRomanbricks.[11]Buildingwithbrickgainedmuchpopularityinthemid18thcenturyand19thcenturies.Thiswasduetolowercostswithincreasesinbrickmanufacturingandfiresafetyintheevercrowdingcities.

    Thecinderblocksupplementedorreplacedfiredbricksinthelate20thcenturyoftenbeingusedfortheinnerpartsofmasonrywallsandbythemselves.

    Structuralclaytiles(clayblocks)areclayorterracottaandtypicallyareperforatedwithholes.

    Cementcomposites

    Cementbondedcompositesaremadeofhydratedcementpastethatbindswood,particles,orfiberstomakeprecastbuildingcomponents.Variousfiberousmaterials,includingpaper,fiberglass,andcarbonfiberhavebeenusedasbinders.

    Woodandnaturalfibersarecomposedofvarioussolubleorganiccompoundslikecarbohydrates,glycosidesandphenolics.Thesecompoundsareknowntoretardcementsetting.Therefore,beforeusingawoodinmakingcementbondedcomposites,itscompatibilitywithcementisassessed.

    Woodcementcompatibilityistheratioofaparameterrelatedtothepropertyofawoodcementcompositetothatofaneatcementpaste.Thecompatibilityisoftenexpressedasapercentagevalue.Todeterminewoodcementcompatibility,methodsbasedondifferentpropertiesareused,suchas,hydrationcharacteristics,strength,interfacialbondandmorphology.Variousmethodsareusedbyresearcherssuchasthemeasurementofhydrationcharacteristicsofacementaggregatemix[12][13][14]thecomparisonofthemechanicalpropertiesofcementaggregatemixes[15][16]

    andthevisualassessmentofmicrostructuralpropertiesofthewoodcementmixes.[17]Ithasbeenfoundthatthehydrationtestbymeasuringthechangeinhydrationtemperaturewithtimeisthemostconvenientmethod.Recently,Karadeetal.[18]havereviewedthesemethodsofcompatibilityassessmentandsuggestedamethodbasedonthematurityconcepti.e.takinginconsiderationbothtimeandtemperatureofcementhydrationreaction.

    BrickswerelaidinlimemortarfromthetimeoftheRomansuntilsupplantedbyPortlandcementmortarintheearly20thcentury.Cementblocksalsosometimesarefilledwithgroutorcoveredwithapargecoat.

    Concrete

    Concreteisacompositebuildingmaterialmadefromthecombinationofaggregateandabindersuchascement.ThemostcommonformofconcreteisPortlandcementconcrete,whichconsistsofmineralaggregate(generallygravelandsand),portlandcementandwater.

    Aftermixing,thecementhydratesandeventuallyhardensintoastonelikematerial.Whenusedinthegenericsense,thisisthematerialreferredtobytheterm"concrete".

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    FalkirkWheel

    FoamedplasticsheettobeusedasbackingforfirestopmortaratCIBCbankinToronto.

    Foraconcreteconstructionofanysize,asconcretehasaratherlowtensilestrength,itisgenerallystrengthenedusingsteelrodsorbars(knownasrebars).Thisstrengthenedconcreteisthenreferredtoasreinforcedconcrete.Inordertominimiseanyairbubbles,thatwouldweakenthestructure,avibratorisusedtoeliminateanyairthathasbeenentrainedwhentheliquidconcretemixispouredaroundtheironwork.Concretehasbeenthepredominantbuildingmaterialinthemodernageduetoitslongevity,formability,andeaseoftransport.Recentadvancements,suchasinsulatingconcreteforms,combinetheconcreteformingandotherconstructionsteps(installationofinsulation).Allmaterialsmustbetakeninrequiredproportionsasdescribedinstandards.

    Fabric

    Thetentisthehomeofchoiceamongnomadicgroupsallovertheworld.Twowellknowntypesincludetheconicalteepeeandthecircularyurt.Thetenthasbeenrevivedasamajorconstructiontechniquewiththedevelopmentoftensilearchitectureandsyntheticfabrics.Modernbuildingscanbemadeofflexiblematerialsuchasfabricmembranes,andsupportedbyasystemofsteelcables,rigidorinternal,orbyairpressure.

    Foam

    Recently,syntheticpolystyreneorpolyurethanefoamhasbeenusedincombinationwithstructuralmaterials,suchasconcrete.Itislightweight,easilyshaped,andanexcellentinsulator.Foamisusuallyusedaspartofastructuralinsulatedpanel,whereinthefoamissandwichedbetweenwoodorcementorinsulatingconcreteforms.

    Glass

    Glassmakingisconsideredanartformaswellasanindustrialprocessormaterial.

    Clearwindowshavebeenusedsincetheinventionofglasstocoversmallopeningsinabuilding.Glasspanesprovidedhumanswiththeabilitytobothletlightintoroomswhileatthesametimekeepinginclementweatheroutside.

    Glassisgenerallymadefrommixturesofsandandsilicates,inaveryhotfirestovecalledakiln,andisverybrittle.Additivesareoftenincludedthemixtureusedtoproduceglasswithshadesofcolorsorvariouscharacteristics(suchasbulletproofglassorlightemittance).

    Theuseofglassinarchitecturalbuildingshasbecomeverypopularinthemodernculture.Glass"curtainwalls"canbeusedtocovertheentirefacadeofabuilding,oritcanbeusedtospanoverawideroofstructureina"spaceframe".Theseusesthoughrequiresomesortofframetoholdsectionsofglasstogether,asglassbyitselfistoobrittleandwouldrequireanoverlylargekilntobeusedtospansuchlargeareasbyitself.

    Glassbrickswereinventedintheearly20thcentury.

    Gypcrete

    Gypcreteisamixtureofgypsumplasterandfibreglassrovings.Althoughplasterandfibresfiborousplasterhavebeenusedformanyyears,especiallyforceilings,itwasnotuntiltheearly1990sthatseriousstudiesofthestrengthandqualitiesofawallingsystemRapidwall,usingamixtureofgypsumplasterand300mmplusfibreglassrovings,wereinvestigated.Itwasdiscovered,throughtestingattheUniversityofAdelaide,thatthesewallshadsignificant,loadbearing,shearandlateralresistancetogetherwithearthquakeresistance,fireresistance,andthermalproperties.Withanabundanceofgypsum(naturallyoccurringandbyproductchemicalFGDandphosphogypsums)availableworldwide,gypcretebasedbuildingproducts,whicharefullyrecyclable,offersignificantenvironmentalbenefits.

    Metal

    Metalisusedasstructuralframeworkforlargerbuildingssuchasskyscrapers,orasanexternalsurfacecovering.Therearemanytypesofmetalsusedforbuilding.MetalfiguresquiteprominentlyinprefabricatedstructuressuchastheQuonsethut,andcanbeseenusedinmostcosmopolitancities.Itrequiresagreatdealofhumanlabortoproducemetal,especiallyinthelargeamountsneededforthebuildingindustries.Corrosionismetal'sprimeenemywhenitcomestolongevity.

    Steelisametalalloywhosemajorcomponentisiron,andistheusualchoiceformetalstructuralbuildingmaterials.Itisstrong,flexible,andifrefinedwelland/ortreatedlastsalongtime.

    Thelowerdensityandbettercorrosionresistanceofaluminiumalloysandtinsometimesovercometheirgreatercost.

    Copperisavaluedbuildingmaterialbecauseofitsadvantageousproperties(see:Copperinarchitecture).Theseincludecorrosionresistance,durability,lowthermalmovement,lightweight,radiofrequencyshielding,lightningprotection,sustainability,recyclability,andawiderangeoffinishes.Copperisincorporatedintoroofing,flashing,gutters,downspouts,domes,spires,vaults,wallcladding,building

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    CopperbelfryofSt.Laurentiuschurch,BadNeuenahrAhrweiler

    PlasticpipespenetratingaconcretefloorinaCanadianhighriseapartmentbuilding

    expansionjoints,andindoordesignelements.

    Othermetalsusedincludechrome,gold,silver,andtitanium.Titaniumcanbeusedforstructuralpurposes,butitismuchmoreexpensivethansteel.Chrome,gold,andsilverareusedasdecoration,becausethesematerialsareexpensiveandlackstructuralqualitiessuchastensilestrengthorhardness.

    Plastics

    Theterm"plastics"coversarangeofsyntheticorsemisyntheticorganiccondensationorpolymerizationproductsthatcanbemoldedorextrudedintoobjects,films,orfibers.Theirnameisderivedfromthefactthatintheirsemiliquidstatetheyaremalleable,orhavethepropertyofplasticity.Plasticsvaryimmenselyinheattolerance,hardness,andresiliency.Combinedwiththisadaptability,thegeneraluniformityofcompositionandlightnessofplasticsensurestheiruseinalmostallindustrialapplicationstoday.

    Papersandmembranes

    Buildingpapersandmembranesareusedformanyreasonsinconstruction.Oneoftheoldestbuildingpapersisredrosinpaperwhichwasknowntobeinusebefore1850andwasusedasanunderlaymentinexteriorwalls,roofs,andfloorsandforprotectingajobsiteduringconstruction.Tarpaperwasinventedlateinthe19thcenturyandwasusedforsimilarpurposesasrosinpaperandforgravelroofs.Tarpaperhaslargelyfallenoutofusesupplantedbyasphaltfeltpaper.Feltpaperhasbeensupplantedinsomeusesbysyntheticunderlayments,particularlyinroofingbysyntheticunderlaymentsandsidingbyhousewraps.

    Thereareawidevarietyofdampproofingandwaterproofingmembranesusedforroofing,basementwaterproofing,andgeomembranes.

    Ceramics

    FiredclaybrickshavebeenusedsincethetimeoftheRomans.Specialtilesareusedforroofing,siding,flooring,ceilings,pipes,flueliners,andmore.

    Buildingproducts

    Inthemarketplacetheterm"buildingproducts"oftenreferstoreadymadeparticles/sections,madefromvariousmaterials,thatarefittedinarchitecturalhardwareanddecorativehardwarepartsofabuilding.Thelistofbuildingproductsexcludesthebuildingmaterialsusedtoconstructthebuildingarchitectureandsupportingfixtures,likewindows,doors,cabinets,etc.Buildingproducts,rather,supportandmakebuildingmaterialsworkinamodularfashion.

    "Buildingproducts"mayalsorefertoitemsusedtoputsuchhardwaretogether,suchascaulking,glues,paint,andanythingelseboughtforthepurposeofconstructingabuilding.

    Testingandcertification

    ASTMInternationalUL(safetyorganization)ETLSEMKOBuildingProductTestingLaboratoryintheUSA,partofIntertek,basedinLondonNTAIncBuildingProductCertificationAgencybasedinNappanee,Indiana,USA

    Seealso

    BiocidalnaturalbuildingmaterialListofbuildingmaterialsPhenomenology(architecture)Materiality(architecture)ThermalemittanceThermalmassPrefabrication

    References1. "building"def.2and4,"material"def.1.OxfordEnglishDictionarySecondEditiononCDROM(v.4.0)OxfordUniversityPress2009

  • 5/23/2015 BuildingmaterialWikipedia,thefreeencyclopedia

    http://en.wikipedia.org/wiki/Building_material 7/7

    Externallinks

    MediarelatedtoBuildingmaterialsatWikimediaCommons

    MaterialesdeConstruccin(http://materconstrucc.revistas.csic.es)Bilingual(Spanish/English)ScientificjournalpublishedbyConsejoSuperiordeInvestigacionesCientficas,Spain.InformesdelaConstruccin(http://informesdelaconstruccion.revistas.csic.es)ScientificjournalpublishedbyConsejoSuperiordeInvestigacionesCientficas,Spain.

    Retrievedfrom"http://en.wikipedia.org/w/index.php?title=Building_material&oldid=663124806"

    Categories: Buildingmaterials

    Thispagewaslastmodifiedon19May2015,at18:35.TextisavailableundertheCreativeCommonsAttributionShareAlikeLicenseadditionaltermsmayapply.Byusingthissite,youagreetotheTermsofUseandPrivacyPolicy.WikipediaisaregisteredtrademarkoftheWikimediaFoundation,Inc.,anonprofitorganization.

    2. Nabokov,Peter,andRobertEaston.NativeAmericanarchitecture.NewYork:OxfordUniversityPress,1989.16.Print.3. Kent,Susan.Domesticarchitectureandtheuseofspace:aninterdisciplinarycrossculturalstudy.Cambridge,England:CambridgeUniversityPress,

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