wood cement composites manufactured from fast … · wood fiber cement boards wfcb (kg/m33)) 1000...
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WOOD CEMENTWOOD CEMENT COMPOSITCOMPOSITES ES MANUFACTURED FROM MANUFACTURED FROM FAST GROWINGFAST GROWING SPECIES IN SPECIES IN TURKEYTURKEY
MUSTAFA ASLANMUSTAFA ASLANDEPARTMENT OF FORESTDEPARTMENT OF FOREST PRODUCTS PRODUCTS KARADENIZ TECHNICAL UNIVERSITYKARADENIZ TECHNICAL UNIVERSITY
TRABZONTRABZON, , TURKEYTURKEY
IUFRO IUFRO AllAll DivisionDivision 5 5 ConferenceConferenceForestForest ProductProduct andand EnvironmentEnvironment: A : A ProductiveProductive SymbiosisSymbiosis
TaipeiTaipei -- TAIWANTAIWAN20072007
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WoodWood CementCement CompositesCompositesConstructionConstruction materialmaterial producedproduced mixingmixing woodwood, , cementcement, , andand waterwater
CementCement ParticleboardsParticleboards WPCB (kg/mWPCB (kg/m33)) 12401240--14501450
WoodWood Fiber Fiber cementcement boardsboards WFCB (kg/mWFCB (kg/m33)) 10001000--18001800
WoodWood WoolWool CementCement BoardsBoards WWCB (kg/mWWCB (kg/m33) ) 350350--500500
AccordingAccording toto WoodWood ParticleParticle Size ;Size ;
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Raw Materials
WoodWood ; Filler ; Filler materialmaterial-- PinePine,, SpruceSpruce etcetc. . SoftwoodsSoftwoods speciesspecies-- EucalyptusEucalyptus, , AcaciaAcacia etcetc. . hardwoodshardwoods speciesspecies-- NonNon woodwood speciesspecies ((BambooBamboo))-- WoodWood industrialindustrial wasteswastes andand agriculturelagriculturel residuesresidues
CementCement; ; MatriksMatriks materialmaterial-- PortlandPortland CementCement
AdditivesAdditives ; ; AccelerateAccelerate of of reactionreaction-- CaClCaCl22, Al, Al22SOSO44, SnCl, SnCl22, AlCI, AlCI22,NaSiO,NaSiO22
WaterWater; ; InitiativeInitiative of of ReactionReaction
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Properties of Material and Usage
basements floor units sound insulation in walls, ceilings and floorsand mainroadroofs thermal insulation important properties such as fire, water, termite and fungi resistancerelative low price of products
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ApplicationsApplications
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OObjectivesbjectivesEExperimentalxperimental manufacturingmanufacturing of of woodwood cementcementcompositecomposite panels from panels from speciesspecies of of eucalyptuseucalyptus,,sprucespruce andand alderalder
To establish initial data about the properties of To establish initial data about the properties of the panels.the panels.
To determine physical and mechanical To determine physical and mechanical properties of the samples and compare them to properties of the samples and compare them to those of commercially produced panels.those of commercially produced panels.
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Raw Materials
Wood
- Eucalyptus (Eucalyptus camaldulensis )- Alder (Alnus Glitunosa)- Spruce (Picea orientalis)
Cement: PC 42.5 Portland Cement
Accelarators : Al(SO4)3, NaSiO2….
Catalyzer: Water
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SpreadingSpreading areaarea andand quantityquantityEASTERN EASTERN SPRUCE (SPRUCE (PiceaPicea orientalisorientalis))
TheThe areaarea of of AlderAlder ((A. A. GlutinosaGlutinosa var. var. OriantalisOriantalis) trees) trees is is aboutabout 66,654 66,654 hectareshectares
TheThe areaarea of of eucalyptuseucalyptus treestrees is is aboutabout 20000 20000 hectareshectares
TheThe areaarea of Sof Sprucepruce ( P. ( P. OrientalisOrientalis) ) treestrees is is aboutabout 146,300 146,300 hectareshectares
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Preparing Wood Material
Particles are differentiate to their dimensions in circular sieve
Coarse and Fine particles
Wood Chipper Wood Hammer Mill Circular screen
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Panel Panel ProductionProductionSpreadingSpreading chemicalschemicals andand waterwater, , MixtureMixture andand FormingForming
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RawRaw MaterialMaterial RatiosRatios
40 / 60Surface layer/ Core Layer (%)3,5Na2SiO2(l) (% based on cement)1,5Al2SO4(s) ( % based on cement)
1:1,64Water / Cement1:2,75Wood / Cement
RatioRaw Material
(56 cm-56cm-1,8cm - 1,2 g/cm3 )
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Press parameters:
PPressureressure: : 5,55,5 MPaMPaPress Press timetime : : 24 24 hourshoursPresPress s temptemp.: .: 60 60 CC ((firstfirst 8 8 hourshours))
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Physical Properties
Specific Gravity Thickness Swelling
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Mechanical Properties:
Internal Bond (EN 319)
Modulus of Raprure and Modulus of Elasticity (EN 310)
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Modulus of ElasticityModulusModulus of of RaptureRapture
InternInternaall Bond Bond StrengthStrength
0,3
0,55
0,45
0
0,1
0,2
0,3
0,4
0,5
0,6
Alder Eucalyptus Spruce
Inte
rnal
Bon
d S
treng
th (N
/mm
2)
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ConclutionsConclutions
SypruceSypruce andand EucalyptusEucalyptus areare convenientconvenient forfor woodwood cementcementcompositescomposites as as mechanical properties mechanical properties thatthat thosethose are comparable to are comparable to typicaltypical commercialcommercial WCPBWCPB
Although WCPB panels made from 100%Eucalyptus gave Although WCPB panels made from 100%Eucalyptus gave reasonable results according to EN Standards %100 Alreasonable results according to EN Standards %100 Alderder WCPB WCPB panels gave unsuitable properties for commercial production as fpanels gave unsuitable properties for commercial production as fast ast growing species in Turkeygrowing species in Turkey
ThreeThree--layer of mixed particle of raw material at different ratio wouldlayer of mixed particle of raw material at different ratio wouldgive a better understanding of the panel properties.give a better understanding of the panel properties.
It appears that particleboard panels made from It appears that particleboard panels made from mixingmixing EucalyptusEucalyptusandand SpruceSpruce maymay givegive betterbetter resultsresults thanthan otherother groupsgroups..
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Karadeniz TechnicalUniversity
Karadeniz Karadeniz TechnicalTechnicalUniversityUniversity
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