1. I-Steel Fiber Yaqina Ukhonkolo
Inombolo yezinhlobo zefiber yensimbi iyatholakala njengokuqiniswa.I-Round steel fiber uhlobo oluvame ukusetshenziswa lukhiqizwa ngokusika ucingo oluyindilinga lube ngobude obufushane.Ububanzi obujwayelekile buyi-0.25 kuya ku-0.75mm.Imicu yensimbi enonxande we-c/s ikhiqizwa ngokuselisa amashidi acishe abe ngu-0.25mm ubukhulu.
Ifayibha eyenziwe ngensimbi ethambile ethambile.Ukuvumelana ne-IS:280-1976 enobubanzi bocingo obusuka ku-0.3 kuye ku-0.5mm kusetshenziswe cishe e-India.
Imicu yensimbi eyindilinga ikhiqizwa ngokusika noma ukusika ucingo, imicu yeshidi eliyisicaba ene-c/s evamile esukela ku-0.15 kuya ku-0.41mm ngobukhulu kanye no-0.25 kuya ku-0.90mm ububanzi ikhiqizwa ngokufaka uhlaka lwamashidi ayisicaba.
I-fiber ekhubazekile, eboshwe ngokukhululekile nge-glue encibilikayo emanzini ngendlela yenqwaba iyatholakala.Njengoba imicu ngayinye ijwayele ukuhlangana ndawonye, ukusatshalaliswa kwayo okufanayo ku-matrix kuvame ukuba nzima.Lokhu kungase kugwenywe ngokungeza ama-fiber bundles, ahlukana phakathi nenqubo yokuhlanganisa.
2. I-Polypropylene Fiber Reinforced (PFR) udaka lukasimende nokhonkolo
I-polypropylene ingenye yezintambo ezishibhe kakhulu futhi ezitholakala kakhulu zama-polypropylene amelana namakhemikhali amaningi futhi kungaba yi-matrix kasimende engaqala ukonakala lapho kuhlaselwa amakhemikhali anonya.Iphuzu layo lokuncibilika liphezulu (cishe ama-degree centigrade angu-165).Ngakho-ke isikhathi sokusebenza.Njengoba (i-100 degree centigrade) ingagcinwa isikhathi esifushane ngaphandle kokulimaza izakhiwo zefayibha.
Imicu ye-polypropylene eyi-hydrophobic ingaxutshwa kalula njengoba ingadingi ukuthintana isikhathi eside ngesikhathi sokuxutshwa futhi idinga kuphela ukucindezeleka ngokulinganayo ekuxubeni.
Imicu emifushane ye-polypropylene ezingxenyeni ezincane zevolumu phakathi kuka-0.5 kuya ku-15 ezisetshenziselwa ukuhweba kukhonkolo.
Fig.1: I-polypropylene fiber eqiniswe usimende-nodaka nokhonkolo
3. I-GFRC – I-Glass Fiber Eqinisiwe Ukhonkolo
I-Glass fiber yenziwa kusukela ku-200-400 imicu ngayinye eboshwe kancane ukwenza isitendi.Lezi zithako zingasikwa zibe ubude obuhlukahlukene, noma zihlanganiswe ukwenza umata wendwangu noma itheyiphu.Ukusebenzisa amasu avamile okuxuba ukhonkolo ovamile akunakwenzeka ukuhlanganisa ngaphezu kuka-2% (ngevolumu) yezintambo zobude obungama-25mm.
Isici esiyinhloko se-fiber yengilazi kube ukuqinisa usimende noma u-matrices wosimende osetshenziswa ekukhiqizeni imikhiqizo yamashidi amancane.Ama-verities asetshenziswa kakhulu emicu yengilazi yi-e-glass esetshenziswa.Kumapulasitiki aqinisiwe kanye nengilazi ye-AR i-E-glass inokumelana okwanele kuma-alkali akhona kusimende wase-Portland lapho ingilazi ye-AR ithuthukise izici ezimelana ne-alkali.Kwesinye isikhathi ama-polymers nawo ayangezwa ezixubeni ukuze kuthuthukiswe ezinye izinto ezibonakalayo njengokunyakaza komswakama.
Fig.2: Ukhonkolo oqiniswe nge-glass-fiber
4. Ama-Asbestos Fibers
I-fiber yamaminerali etholakala ngokwemvelo engabizi, i-asbestos, ihlanganiswe ngempumelelo nosimende wase-Portland ukuze kwakhiwe umkhiqizo osetshenziswa kabanzi obizwa ngokuthi usimende we-asbestos.Amafayibha e-asbestos lapha amelana nomshini oshisayo namakhemikhali awenza afanelekele amapayipi omkhiqizo weshidi, amathayela nezinto zokufulela zikathayela.Ibhodi likasimende le-asbestos cishe liphindwe kabili noma kane kune-matrix engaqinisiwe.Nokho, ngenxa yobude obufushane uma kuqhathaniswa (10mm) ifayibha inamandla okuthonya aphansi.
Fig.3: Ifayibha ye-Asbestos
5. I-Carbon Fibers
Amafayibha ekhabhoni avela kwakamuva kakhulu nethuba lokungezwa okumangazayo kububanzi befayibha etholakalayo ukusetshenziselwa ukuthengisa.I-Carbon fiber iza ngaphansi kwe-modulus ephezulu kakhulu yokunwebeka namandla okuguquguquka.Lezi zibanzi.Izici zamandla nokuqina kwazo kutholakale ukuthi ziphakeme kunalezo zensimbi.Kodwa asengozini yokulimala ngisho nangaphezu kwe-glass fiber, ngakho-ke ngokuvamile aphathwa nge-resign coating.
Fig.4: Imicu yekhabhoni
6. Ama-Organic Fibers
I-Organic fiber efana ne-polypropylene noma i-fiber yemvelo ingase ibe inert eningi ngamakhemikhali kunemicu yensimbi noma yengilazi.Zibuye zishibhile, ikakhulukazi uma zemvelo.Ivolumu enkulu yefiber yemifino ingasetshenziswa ukuthola inhlanganisela eminingi yokuqhekeka.Inkinga yokuxuba nokuhlakazeka okufanayo ingase ixazululwe ngokungeza i-superplasticizer.
Umfanekiso wesi-5: I-Organic Fiber
Isikhathi sokuthumela: Jul-23-2022