Lub downsides ntawm fiberglass rebar
Fiberglass rebar (GFRP, los yog iav fiber reinforced yas) yog cov khoom siv sib xyaw, muaj cov iav fibers thiab cov resin, siv los ua lwm txoj hauv kev siv cov khoom siv hlau hauv qee yam kev siv. Txawm hais tias nws muaj ntau qhov zoo, muaj qee qhov tsis zoo:
1. pluag alkali tsis kam:iav fibers muaj qhov cuam tshuam rau kev yaig nyob rau hauv ib puag ncig alkaline, thaum cov pob zeb ua haujlwm feem ntau yog alkaline, uas tuaj yeem cuam tshuam rau cov khoom sib txuas thiab kev ua haujlwm ntev ntawm fiberglass reinforcing tuav rau pob zeb.
2. Tsawg shear zog:Fiberglass reinforcing tuav muaj zog shear qis dua piv rau cov hlau zoo tib yam, uas txwv tsis pub lawv siv hauv cov khoom siv uas yuav tsum tau muaj zog dua shear.
3. Tsis zoo ductility:Fiberglassrebar tsis zoo li cov khoom siv hlau, uas txhais tau hais tias lawv tuaj yeem tiv taus tsawg deformation ua ntej ncav cuag lawv lub zog kawg, thiab tej zaum yuav tsis yog qhov kev xaiv zoo tshaj plaws rau qee qhov kev tsim seismic.
4. Kev ua haujlwm tsis zoo ntawm qhov kub thiab txias:Lub zog ntawmfiberglassrebar txo qis hauv qhov kub thiab txias ib puag ncig, uas txwv tsis pub lawv siv hauv cov ntawv thov uas lawv tuaj yeem raug rau qhov kub thiab txias.
5. Cov teeb meem nqi: Thaum fiberglassrebar tuaj yeem txuag tau nyiaj hauv qee kis, hauv lwm tus lawv tuaj yeem kim dua li cov khoom siv txhawb nqa cov khoom siv vim qhov tshwj xeeb ntawm cov khoom siv, ntau lawm thiab kev teeb tsa.
6. Standardization thiab tsim specifications: Daim ntawv thov ntawmfiberglass reinforcing tuav yog qhov tshiab dua piv rau cov qauv siv steel, thiab yog li cov qauv tsim thiab cov qauv tsim tshwj xeeb yuav tsis paub tab txaus, thiab cov neeg tsim qauv yuav ntsib kev txwv ntawm cov lus qhia tshwj xeeb thiab cov lus qhia rau lawv siv.
7. Kev tsim kho cov txheej txheem:Installation thiab kev tsim kho ntawmfiberglassrebar xav tau kev txawj tshwj xeeb thiab ceev faj, uas yuav ua rau muaj kev tsim kho nyuaj thiab nqi ntau dua.
8. Mechanical anchoring teeb meem: Lub anchoring ntawmfiberglassrebar tuaj yeem ua tau ntau dua li cov khoom siv dag zog, uas yuav tsum tau tsim tshwj xeeb anchoring thiab kev tsim kho.
Txawm tias cov drawbacks,iav fiber ntau rebar tseem yog ib qho kev xaiv txaus nyiam rau qee yam kev siv tshwj xeeb, tshwj xeeb tshaj yog qhov uas tsis yog-magnetic, corrosion-resistant los yog cov khoom siv lub teeb yuag.
Qhov zoo ntawm fiberglass rebar
GFRP muaj cov txiaj ntsig hauv qab no tshaj li cov pa roj carbon monoxide (feem ntau yog carbon steel bars):
1. Corrosion kuj:GFRP tuav tsis xeb, yog li lawv kav ntev dua nyob rau hauv ib puag ncig hnyav xws li marine, tshuaj corrosion lossis high humidity.
2. Tsis-magnetic:Frp kob yog cov tsis muaj hlau nplaum, uas ua rau lawv muaj txiaj ntsig zoo nyob rau hauv cov xwm txheej uas tsis yog cov khoom siv hlau nplaum xav tau, xws li chav MRI hauv tsev kho mob lossis ze rau cov cuab yeej tshawb nrhiav geological.
3. Lub teeb yuag:Fiberglass rebar muaj qhov ntom ntom qis dua li cov khoom siv hlau, uas ua rau lawv yooj yim dua los tuav thiab nruab thaum tsim kho thaum tseem txo qhov hnyav ntawm tag nrho cov qauv.
4. Hluav taws xob rwb thaiv tsev:Iav fiber reinforced polymer tuav yog cov insulators ntawm hluav taws xob, yog li lawv tuaj yeem siv rau hauv cov qauv uas yuav tsum tau muaj hluav taws xob rwb thaiv tsev, xws li kev sib txuas lus hauv xov tooj lossis cov qauv kev txhawb nqa rau cov kab hluav taws xob.
5. Tsim yooj yooj yim:GFRP tuav tuaj yeem ua raws li cov duab thiab loj raws li xav tau, muab cov neeg tsim qauv tsim kev ywj pheej ntau dua.
6. Durability: Raws li txoj cai,fiberglass reinforcing tuav tuaj yeem muab kev ua haujlwm ntev ntev, txo kev txij nkawm thiab hloov cov nqi.
7. Kev qaug zog: Fiberglass rebars muaj kev qaug zog zoo, uas txhais tau hais tias lawv tswj hwm lawv cov kev ua tau zoo nyob rau hauv kev rov ua haujlwm dua, ua rau lawv tsim nyog rau cov qauv uas raug cuam tshuam los ntawm cyclic loads, xws li txuas hniav thiab txoj kev loj.
8. Tsawg coefficient ntawm thermal expansion:Fiberglass rebars muaj qhov qis coefficient ntawm thermal expansion, uas ua rau lawv zoo dua seem stability nyob rau hauv ib puag ncig nrog loj kub hloov.
9. Txo pob zeb npog: Vimfiberglass rebars tsis txhob xeb, lub thickness ntawm lub pob zeb npog tuaj yeem txo qis hauv qee qhov qauv tsim, txo qhov hnyav thiab tus nqi ntawm cov qauv.
10. Txhim kho kev ua haujlwm zoo: Hauv qee qhov kev siv,fiberglass rebars tuaj yeem ua haujlwm zoo dua nrog pob zeb thiab txhim kho kev ua haujlwm tag nrho ntawm cov qauv, xws li hauv kev khoov thiab shear kuj.
Txawm hais tias cov txiaj ntsig zoo li no,fiberglass rebars kuj muaj lawv cov kev txwv, raws li tau hais ua ntej. Yog li ntawd, thaum xaiv los siv iav fiber rebars, nws yog ib qho tsim nyog yuav tsum tau ua tib zoo xav txog cov kev xav tau tshwj xeeb ntawm cov qauv thiab cov xwm txheej ib puag ncig.
Post lub sij hawm: Dec-21-2024
