Drying bamboo poles — guadua bamboo

StphaneSchrder(/preservation/?author=53407b1be4b01b8f6b772224) November

12,2012(/preservation/drying-bamboo-poles)

DryingBambooPolesDryingbamboopolesrequiresmoretimethanwoodofsimilardensity.Thisbecause

bamboopossesshygroscopicmaterials(compoundthateasilyabsorbsmoisture)that

maycontain50-60%moisturecontent,dependingonthefellingseason,areaofgrowth

andspecies.

Whenbamboodriesitcontractsandshrinks.Thisshrinkagestartsfromthemomentthe

bambooiscut,andcanreducethediameterofthebamboopoles(/bamboo-poles/)with

10%to16%,anditswallthicknesswith15%to17%.

Greenbamboopolesshouldnotbeusedinconstruction(/construction/).Sincegreen

bamboosaresubjecttoshrinkage,joints(/working-with-bamboo/joining-bamboo)and

terminalsmayloosenafterjustafewweeks.Greenbambooisalsomoreattractive

toinsectsandmicroorganisms,thandrybamboo.

HowtoDryBambooPoles?

Themostcommonwaytodrybambooforcommercialpurposesis"airdrying".Oncethe

bamboopolesareharvested(/cultivation/when-and-how-to-harvest-

bamboo)andchemicallytreated,allpolesshouldbestackedandstoredundercover.

Importantfactorswhendryingbamboo:

Itismostimportanttokeepthe

culmsawayfromdirectsoil

contacttopreventfungalorinsects-

attacksandtoavoidthehumidityof

thesoilaffectingthedryingprocess.

Itisrecommendedthatonlymature

bambooculms(over3years)are

usedtoavoidcollapsingofthe

bamboopoles,duetoexcessiveand

non-uniformshrink-ageoftheculm.

Removeinfectedculmsfromthe

storagearea.

Preservation

ChemicalTreatment

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tag=Chemical+Treatment)

DryingBamboo

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tag=Drying+Bamboo)

DurabilityofBamboo

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tag=Durability+of+Bamboo)

InsectInfestation

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tag=Insect+Infestation)

LeachingBamboo

(/preservation/?

tag=Leaching+Bamboo)

MoldandFungus

(/preservation/?

tag=Mold+and+Fungus)

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Comments(5) Subscribeviae-mail

Tagged:DryingBamboo(/preservation/?tag=Drying+Bamboo)

Thanksforyourinformation,Iamdrying14fishingpolesforspringfishingandtied

thebamboopolestothetopofahighbranchandputafivelbsweightontheend

ofthepole.Ihopethisworks.

storagearea.

Avoidrapidchangesinmoisture

content,forexamplebydryinground

bambooindirectsunlightfora

prolongedtime.Thiscancause

cracksinthebamboopoles.Split

bamboosdonotposeanyproblems

andcanbedriedintheopensun.

Providegoodventilation(air

circulation).

Verticalstackinggivesfasterdryingandlesschancesoffungalattack.However,a

goodsupportsystemshouldbeinplacetoavoidthepolesfrombending.

Horizontalstackingisgenerallypreferredforlargestacks.Stackingshouldbedone

onraisedplatforms,orplacedonathickplasticsheettoavoidsoilcontact.Use

separatorsbetweeneachrowofbambooforbetteraircirculation.Theculmsatthe

bottomofthestackmaycrackorbendduetotheweightofastack,thereforedon't

pileupthebamboopolestoohigh.

Foruniformdrying,thebamboopolesshouldberotatedinthelongitudinal

directionevery15days.

Airdryingroundbambootakesabout6-12weeks.Dryingtimedependson:

Initialmoisturecontent

Bamboowallthickness

Environmentalhumidity

Quantityofsolarradiation

Theabsenceorpresenceofrain

Speedofthesurroundingair

OtherMethodstoDryandStoreBamboo

*Post-harvestingtranspirationisatechniqueusedbypeasantsorindigenous

communities.Theproceduretakesplaceonthebambooplantation,anddoesnotonly

drythebamboostems,itisalsoatraditionalwaytopreservebamboofrominsect

infestation.

Thefreshlycutbamboostemsareplacedonastone(toavoidsoilcontact).Thestemis

placedupright,leaningagainstanotherbambootreewithbranchesandleavesattached

forabout3-4weeks.Thisway,bamboostemslosetheirhumidityprogressivelytrue

naturalventilationandtranspirationtruetheleaves.

Formoreinformationaboutpost-harvestingtranspirationsee:HowtoHarvestBamboo

(/cultivation/when-and-how-to-harvest-bamboo).

*Storingbambooinwaterisusefulwhenbambooneedstomaintainitspliabilityor

whenitneedstobeprocessedinits"green"condition.Storageinwater

causesleachingofstarch(sugars)andisalsousedasatraditionalbamboopreservation

technique.

*Kilnovendryingisatthepresentlevelofdryingtechnologynotrecommendedfor

roundbamboos.Evenundermilddryingconditions,highertemperaturescanenhance

theincidenceofcrackingandcollapse.Splitbamboos,however,caneasilybekilnoven

dried.

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DurabilityofBamboo(/preservation/durability-of-bamboo)

BambooInsectInfestation(/preservation/bamboo-insect-infestation)

HowtoRemoveBambooMold(/preservation/how-to-remove-bamboo-mold)

LeachingBamboo(/preservation/leaching-bamboo)

5 16

OldestFirst

Preview POSTCOMMENT

Winston 8monthsago

BambooPoles

Wholesale(/wholesale-

bamboo-poles/)

WholesaleBambooPolesAsa

producerandsupplierof

bambooinbulkworldwide,we

alwaysstrivetoofferthebest

qualityatthemostcompetitive

prices.Wecurrentlyexport

bamboopolesfromChina,

IndonesiaandColombia.

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WhatisthedryingmethodbeingadoptedinColombiawithtubesrunninginto

bamboo?Thanksinadvance!

That'satechniquecalled"elPulpo"(inventedbyJorgStamm).Allnode