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Lisebelisoa tsa tšepe tse kopaneng bakeng sa meralo ea motheo ea bokamoso | Lefatše la likarolo

GFRP e felisa kotsi ea ts'enyeho mme e eketsa ho tšoarella ha konkreite e matlafalitsoeng ka makhetlo a mane ho fihlela litlhoko tsa nako e tlang ha sephethe-phethe, litoropo le maemo a leholimo a feteletseng a eketseha. #insidemanufacturing # frprebar # Lisebelisoa

Morero o moholo ka ho fetisisa oa ho khutlisa GFRP. Lik'hilomithara tse ka bang 11,000 tsa mokokotlo oa GFRP li matlafalitse kanale ea konkreite ea taolo ea likhohola Jizan, Saudi Arabia, mme e fihletse nako ea bophelo ea lilemo tse 100. Mohloli oa lifoto oa litšoantšo tsohle: Mateenbar

Lefatšeng ka bophara, meaho ea konkreite e hlasetsoe ho feta neng kapa neng. Ha se feela sephethephethe litseleng, marokho le libaka tse fetang li eketsehile, empa phetoho ea maemo a leholimo e boetse e mpefalitse maemo a leholimo a feteletseng, ho kenyeletsoa lifefo tse matla le lipula tse matla, tse lebisang ho likhohola le liketsahalo tse ling tse senyang. Tlas'a khatello e joalo, konkreite e ka petsoha. Ka ho pepesetsoa linthong tse kang metsi a letsoai a senyang mekoallo ea tšepe, sena se ka senyeha kapele maemong a senyang.

Lefapha la Lipalangwa la Florida (FDOT, Tallahassee, Florida, USA) le re: "Tsela e ncha ea ho rarolla bothata bona bo boholo ke ho tlosa litšepe tsa setso tsa tšepe le tšepe ka" fiber "e matlafalitsoeng (FRP)." FDOT esale e le moetapele ts'ebelisong le tekong ea mekoallo ea tšepe ea FRP le nts'etsopele ea maemo a moralo le ts'ebeliso, joalo ka Maemo a fanoeng ke American Concrete Institute (ACI e Farmington Hills, Michigan, USA). Le ha tšepe e entsoe ka fiber ea khalase (GFRP kapa GRP), lihlahisoa tse sebelisang basalt (BFRP) kapa carbon fiber (CFRP) le tsona li entsoe.

Nick Crofts, CEO oa moetsi oa rebar ea GFRP Mateenbar (Dubai, UAE le Concord, North Carolina, USA) o itse: "Ka lebaka la nalane e telele le e turang ea ts'enyeho, libakeng tse mabifi, Steel ha e sa bonoa e le khetho e bolokang chelete. Mofani oa thepa e kholo ka ho fetisisa lefats'eng la GFRP rebar. Morero ona o Jazan, Saudi Arabia, o bolelele ba lik'hilomithara tse 23 le bophara ba limithara tse 80. Ke mocha oa taolo ea likhohola. Crofts o boletse, leha mokokotlo oa GFRP o le lilemo li 30-40, empa merero ea bohlokoa joalo ka Jizan Flood Channel e e sutumelletsa lits'ebetsong tsa mantlha. Keketseho ena e lokafalitse limela tse ncha tsa Mateenbar ho la Saudi Arabia le United States

Mateenbar GFRP rebar e entsoe ke Pultron Composites (Gisborne, New Zealand). Pultron Composites ke pula-maliboho ebile ke setsebi sa mahlale a pultrusion le boqapi ba lihlahisoa. Mateenbar e arabela ho liqholotso tse ikhethang tsa mmaraka oa rebar, o sa hlokeng feela tlhahiso e phahameng le litheko tse tlase, empa hape o hloka hore lihlahisoa li hlalosoe ke litsebi tsa meralo le / kapa baenjiniere. Ka hona, Mateenbar e thehile feme ea eona ea pele ka 2008, haufi le bao e ka bang bareki le lik'hamphani tsa boenjiniere ba projeke Dubai, United Arab Emirates, sebaka se tsebahalang ka merero e meholo ea meralo ea motheo le ts'ebeliso ea bopula-maliboho ea thepa e kopaneng. Pultron e lula e le molekane oa leano la Mateenbar ebile e le mofani oa thepa e kholo ea mahlale a ikhethileng le nts'etsopele ea lihlahisoa.

Mohato oa 1: Faeba ea khalase e fepeloa ka hlobo ea pultrusion, 'me lehoakhoa le kenoa nakong ea ts'ebetso ea ho koala hlobo.

Mohato oa bobeli, ts'ebetso ea pultrusion e ka hlahisa melamu e kopaneng ea khalase ea fiber / vinyl ester e ka bang bolelele ba limithara tse 80.

Fektheri ea Mattenbar e sebelisa theknoloji e tsoetseng pele ea Pultron ho hlahisa mekoallo ea tšepe e sa fetoheng ka kotulong e phahameng ntle le ho hlahisa metsoako ea li-organic e sa fetoheng (VOC). "Re kenya lehoakhoa ka har'a hlobo ea tšepe ea boenjineri ebe rea e folisa," ho boletse Crofts.

O boetse a re: "Rebar ke sehlahisoa se nang le boiphihlelo se sebetsang hantle ho feta ± 1%." “Ha ho na lebaka la ho ikemela ho bona lehoakhoa leo fatše kapa lerōle moeeng. Fiber e sebelisitsoeng ke Owens Corning (Ohio, USA). Khalase ea ECR e sa keneleng ts'enyeho, lehoakhoa lena ke mofuta oa epoxy adhesive vinyl ester ea rona. E phahamisa ho ba thata, matla le ho tšoarella, mme e betere haholo ho feta eo ka lesapo la epoxy seal Polyester qetellong. ”

Lithupa tse chitja tse phuthetsoeng li se li hlophisoa ho etsa setšoantšo se potolohang hore konkreite e jare mojaro. "Hona hape ke ts'ebetso e koetsoeng," Crofts a supa. “Sebelisa lebenkele le etsang mechini le nang le lisebelisoa tsa moea tsa Donaldson (Bloomington, Minnesota, USA). Ka mor'a moo, re koahela bokantle ka filimi ea lehoakhoa e le hore re ntlafatse tsela eo re tšoarang batho ka eona. ” Mateenbar's Bolelele ba mokoallo oa tšepe bo ka ba bolelele ba limithara tse 80, 'me bo ka khaoloa ka bolelele bo itseng kamoo ho hlokahalang. "Bakeng sa merero ea meralo ea motheo le kaho, hangata o bona bolelele ba maoto a 40," ho boletse Crofts.

“Bophahamo ba karolelano ea tšepe e otlolohileng ke lisenthimithara tse 0,75, 'me tensile modulus e entsoeng ka fiber ea khalase ea 11,600-ksi (80-GPa) ke 8,700 ksi (60 GPa); ka hona, litaba tsa fiber li holimo haholo-ho feta 80% (ka boima ba 'mele). Ha ho na mokhoa oa ho e koba, ka hona mekoallo ea rona ea tšepe ea GFRP e entsoe ka mekhoa e fapaneng le li-resin le ho sebelisa theknoloji ea khoebo. "

Jizan (eo hape e tsejoang e le Jazan) ke motse-moholo oa sebaka sa Jizan. E fumaneha k'honeng e ka boroa-bophirima ho Saudi Arabia, ka leboea ho moeli oa Yemen. Ka lebaka la phallo e tsoang lithabeng tse haufi, likhohola tse kotsi li ka ba teng nakong ea lipula tse matla tsa nako le nako. Mokelikeli ona oa metsi a pula ea konkreite o matlafalitsoeng o bolelele ba lik'hilomithara tse 23 o hahiloe ho sireletsa sebaka se seholo sa liindasteri, ho kenyelletsa le mochini o hloekisang oli Saudi Aramco (Tehran, Saudi Arabia).

Pele ho seoa sa COVID-19, Saudi Aramco e ne e le k'hamphani e kholo ka ho fetisisa lefatšeng mabapi le lekhetho. E sebetsana le khoebo eohle ea peteroliamo le lihlahisoa ho tsoa 'Musong hape e ikarabella bakeng sa 10% ea kaho eohle Saudi Arabia. "Saudi Aramco e hlokomela hore karolo e kholo ea tekanyetso ea eona ea selemo le selemo e sebelisetsoa ho nkela meaho ea konkreite sebaka," ho boletse Crofts. “Letswai le phahameng la sebaka seo le phallo e phahameng ea mocheso ho tloha motšehare ho isa bosiu e ile ea baka hore konkreite e peperane kapele. Saudi Aramco e qalile ho batla mahlale a mang. Joaloka setho sa ACI, ba ile ba sebelisa leano la bona ho latela maemo a tšepe a FRP ao ba a qapileng le ho a amohela. Joaloka maemo a Saudi Aramco, ho ile ha etsoa liphetoho le lintlafatso tse ling. Joale, k'hamphani e hloka tšebeliso ea mekoallo ea tšepe ea GFRP libakeng tse ling tse senyang haholo. ”

Saudi Aramco (Saudi Aramco) e kopa projeke ea Jizan Flood Channel ebe e khetha barekisi ba bararo ba GFRP. Mateenbar e hapile tumellano ea 50%. "Ha re ntse re itokisetsa morero, re ile ra emela likhoeli tse 'maloa," Crofts o sa hopola. “Eaba ka tšohanyetso, ho hlokahala thepa eohle hang-hang. Fektheri ea Dubai e ile ea senngoa fatše ka beke, 'me ea hlahisoa ka likhoeli tse supileng. Hoo e ka bang lik'hilomithara tse 6000 tsa mokokotlo oa GFRP. ”

Mohato oa 5 Beha mekoallo ea tšepe ho latela litšoantšo tsa moralo, 'me u sebelise likarolo tse chitja tsa lipeipi ho li tšehetsa ka bophahamo bo loketseng,' me u li lokise hammoho le maqhama a tšepe.

Kamora ho pepa, mekoallo ea tšepe e ile ea kenngoa ke mokonteraka oa projeke Al Yamama Group (Dammam, Saudi Arabia). "Re nahana hore re hloka ho fana ka thuso e ngata nakong ea ts'ebetso ea ho kenya, empa ha ho hlokahale," Crofts o boletse. "Ba fumane hore ho hlongoa ho potlakile haholo ho feta ho matlafatsa tšepe." GRFP rebar e boima ba 25% feela ea mokokotlo oa tšepe, ka hona e ka nka bolelele bo bolelele le batho ba fokolang mme ho bonolo ho e tsamaisa le ho e beha. O boetse a re: "Ho boetse ho hlokahala liphaephe tse fokolang tsa boemo." Likarolo tsena tsa lipeipi li sebelisetsoa ho tšehetsa tšepe ka bophahamo bo nepahetseng ka konkreite. ”

Kamora ho beha mokoallo oa tšepe, tlama ka terata e sa hloekang ebe oa e hlahloba, ebe u itokisetsa ho e tšela ka konkreite. Crofts o bontšitse hore sehlopha sa ho kenya bocha se tsamaile ka lebelo hoo e neng e hlile e le kilomitara e le 'ngoe ka tlasa kanale ea bophara ba limithara tse 40-80 pele ba hlokomela hore ts'ebetso ea ho tšela konkreite e ke ke ea tsoela pele. O ile a eketsa a re: "Kahoo ba ile ba emisa 'me ba tlohela konkreite hore e tšoere. “Sena se bohlokoa hobane haeba pula e na ka matla, likhohola li tla tlatsa noka ka lehlabathe. Sena se etsahetse habeli, sa baka ho lieha, empa se boetse se totobatsa bohlokoa ba kanale ea drainage. ”

Kamora ho tšela konkreite holim'a mekoallo ea tšepe, sehlopha sa ho kenya se tla kopana le ho hatella ho tlosa bubble tsa moea, ebe se tiisa matsatsing le libekeng tse 'maloa tse tlang. "Mehatong ena, ha ho na phapang lipakeng tsa GFRP le rebar," Crofts a re. "Re phethetse phepelo ea rebar ka Pherekhong 2020, 'me kanale e sa tsoa phetheloa."

Lenaneo le matlafalitsoeng la noka ea konkreite le phethetsoeng Jizan le tla boloka metsi a likhohola hole le litsela le lits'ebetso tsa tlhahiso ea indasteri. Mohloli oa setšoantšo: Sehlopha sa Al Yamama

Crofts o bontšitse hore mokokotlo oa GFRP ha o nke sebaka sa tšepe ka kotloloho. “Mokokotlo oa GFRP le mokoti oa tšepe li na le thepa e fapaneng. Liphapang tsena li tlameha ho kenyeletsoa morerong. Ka hona, leha ACI 318 e entsoeng ka tšepe e matlafalitsoeng hangata e sebelisoa, sena ha se sebetse ho GFRP rebar, e itšetlehileng ka tataiso ea ACI 440 Design. Mohlala, mokokotlo oa GFRP o na le matla a phahameng ho feta tšepe empa o na le modulus e tlase ea tensile. Ho boetse ho bonolo hore motho a hlōlehe. ” Crofts o bontšitse hore moralo oa meaho ea tšepe, palo ea marabele hangata e khethoa ke matla a thata. Leha ho le joalo, bakeng sa GFRP, modulus hangata ke eona ntlha e khethollang palo ea matlafatso e hlokahalang. Ho fihlela tlhoko ena hangata ho fella ka sebopeho se fetang matla a ho qetela a matla. E ka netefatsa hape hore mokhoa o loketseng oa ho hloleha o hlaha ka sebopeho sa rebar ea GFRP.

Tlhokomelo e 'ngoe ke ho theha ho khumama le sebopeho. Crofts o bontšitse hore karolelano ea mekoallo ea tšepe e kobehileng ho mekoallo ea tšepe e otlolohileng morerong e ka ba 30%. Ho sebelisa mekoallo ea tšepe, hangata tlhahiso ena e etsoa sebakeng sa marang-rang. O hlalositse: "Mokoallo o tshekaletseng o hlahisoa fekthering ea rona e laoloang ea tikoloho mme o ka isoa ka kotloloho sebakeng sa marang-rang ntle le mehato e bohareng ea tlhahiso." Ho ea ka phepelo, sena e ka ba phephetso hobane tlhoko e ka ba pele ho beke. Re fumane hore ho tenyetseha le ho ba le lifeme sebakeng se le seng ho bohlokoa haholo. ”

Crofts o itse: "Haeba e baloa ka lidolara ka ponto, litšenyehelo tsa mokokotlo oa GFRP ke makhetlo a 3-4 ho feta a tšepe, hobane sehlahisoa sa rona sa lihlahisoa ke kotara ea seo. Tekanyo e loketseng ea litekanyo ke lidolara ka leoto, hobane e hlile e boletsoe ebile ea rekoa Rebar ke karolo e nyane ea molumo oa konkreite. Ha u metha litšenyehelo tsa eona ka bophahamo ba modumo, mokokotlo oa GFRP ke tlholisano ea litšenyehelo le tšepe. ”

"Jizan ke projeke ea pele e kholo e sa lumelleng ts'ebeliso ea tšepe," ho boletse Crofts. “Ba na le sehlopha sa ho rala sebopeho se hlokahalang ka bophelo ba ts'ebeletso ba lilemo tse fetang 100. Ha tlhoko e ntse e hola, bahlahisi ba 'maloa ba likepe tsa GFRP ba ntse ba batla metheo ea tlhahiso Saudi Arabia. " Mateenbar e ntse e haha ​​feme e ncha moo, mme Semela se secha Concord, North Carolina, USA, se sebeletsa Amerika Leboea, e leng 'maraka oa bobeli o moholo kamora Middle East. Lifektheri ka bobeli li nchafatsa theknoloji ea Pultron e tsoetseng pele ea pultrusion, e koahelang sebaka sa lisekoere-mithara tse 100,000, mme ke limela tsa sejoale-joale. Lisebelisoa tsena ka bobeli li tla tlisoa ka Mphalane 2020, mme tlhahiso e lebelletsoe ho qala mathoasong a 2021.

Ha tlhoko ea mokokotlo oa GFRP Middle East e eketseha, mmaraka oa Amerika Leboea o ntse o hola. Croft o itse: "Hajoale, ts'ebeliso e kholo ka ho fetesisa ea mokokotlo oa GFRP Amerika Leboea ke mabota a leoatle kapa marokho a letsoai a lebopong." "Leha ho le joalo, DOT le beng ba thepa joale ba batla ho eketsa litšenyehelo ho pholletsa le potoloho ea bophelo ea sebopeho [CW e lumela, Bona" Karolo e ntseng e hola ea lisebelisoa tse kopaneng ho meralo ea motheo "], e kenyeletsang ho fokotsa tlhoko ea tlhokomelo le ho theha nako e telele le meralo ea moshoelella. Baenjiniere ba boeletsi le basebelisi ba ho qetela ba bona boleng ba theknoloji ea rebar ea GFRP, mme baetsi ba rebar ea GFRP ba sebelisana 'moho le maemo a ts'ebetso. Hape ho na le basebelisi ba bang ba etelletseng pele, joalo ka FDOT, ba ntšetsang pele theknoloji le ho thusa li-DOT tse ling, tse thusitseng ho hasanya tsebo. ”

Crofts o bontšitse hore haufinyane FDOT e amohetse webinar ho moralo oa konkreite e ntlafalitsoeng ea GFRP le bankakarolo ba 200. Bukeng e 'ngoe ea marang-rang, Dr. Antonio Nanni, e mong oa bafuputsi ba ka sehloohong Univesithing ea Miami (Miami, Florida, USA) o itse: "Rebar rebar e se e loketse." Crofts o boletse hore sena se fihletsoe. paka. "Mosebetsi ha joale ke ho lumella lik'hamphani tse ngata ho o qaqisa le ho lumella borakonteraka hore ba o sebelise."

Sebopeho se hlahisoang ke ts'ebetso e tsoelang pele ea ho hlophisa compression ke 30% e bobebe ho feta aluminium, mme theko ea Airbus le Boeing e phahame.

Lihlahisoa tse fapaneng tsa CIPP li nolofalletsa ho lokisoa ha lipeipi tsa ka tlasa lefatše tsa metsi a litšila le metsi a nooang ho fapana le ho cheka le ho nkeloa sebaka.

Likarolo tsa Thermoplastic tse ka hlahisoang ka bongata li tla fumana likarolo tse ncha tsa mmaraka indastering ea lifofane.


Nako ea poso: Jun-15-2021

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