Cov khoom tseem ceeb ntawm cov hlau fiber ntau

Steel fiber yog qhov tshiab, kev ua tau zoo txheej hlau fiber ntau yam. Cov qauv tsim qauv ntawm kev sib xyaw ntawm cov hlau fiber ntau feem ntau yog feem ntau li ntawm cov pob zeb ua kom zoo nkauj (nrog cov qauv sib txawv: lub zog ntawm compressive thiab lub zog yooj yim dua); Kev siv roj fiber ntau yog txiav txim siab raws li cov khoom siv tau zoo uas yuav tsum tau los ntawm kev tsim; Chav dej tau haus thiab xuab zeb piv cuam tshuam nrog Fiber ntau. Rau txhua {0. 5% (ntim nyiaj) ntawm cov roj av roj ntxiv, chav dej tau nce los ntawm 6kg thiab cov xuab zeb piv txwv los ntawm 2%.
Steel Fiber Qhob muaj tib qho kev sib xyaw, kev ua haujlwm thiab kev tsim kho ua vaj tse li cov pob zeb zoo tib yam. Cov fibers yuav tsis pob nyob rau hauv cov pob zeb ua thiab yog tusyees faib. Nws tuaj yeem tsim nyob rau hauv kev ua lag luam pob zeb ua cais cov nroj tsuag thiab tuaj yeem siv rau kev siv twj. Thaum ntxov poob ntawm milled steel fiber ntau dua, nrog ib qho poob ntawm 32 feeb thiab ib qho poob ntawm 42% hauv 2 teev. Qhov tseeb ua haujlwm ntawm steel fiber ntau dua yog qhov zoo dua li ntawm cov pob zeb ua kom zoo ib yam nkaus. Steel Fiber Qhob muaj cov khoom siv zoo. Piv nrog cov pob zeb ua kom zoo ib yam, lub zog compressive yog nce los ntawm {4}}%; Lub zog flexural yog nce los ntawm 20-50%; Splitting tensile lub zog yog nce los ntawm {6}}%; Hnav tsis kam yog nce li 40%. Cov khoom siv cev nqaij daim tawv thiab cov kws kho tshuab tuaj yeem ua kom tau raws li cov txheej txheem txhawb nqa los ntawm cov phiaj xwm nroog thiab kev kuaj cov phiaj xwm kev kuaj mob hauv nroog thiab tshuaj xyuas cov hau npog zoo. Cov ntxhib thiab huv ntawm cov hlau fiber ntau tuaj yeem khov kho ua ke nrog cov cement muab tso rau hauv pob zeb. Qhov no yog qhov tseem ceeb vim li cas vim li cas milling stat fiber txhim kho ntau yam khoom ntawm pob zeb.
Ib qho ntxiv, High-zog Steel Fiber Ntau tau siv dav nyob rau hauv prefabrication, cast-in-chaw muaj peev xwm ua tiav cov kev ua tau zoo, kev lag luam thiab Cov txiaj ntsig ib puag ncig.
1. Adhaesion
Txij li thaum lub interface sib txuas nruab nrab ntawm cov hlau fiber ntau thiab cov pob zeb ua kom zoo nkauj, yog li ntawd rau cov khoom sib txhuam, yog li ntawd rau cov khoom sib txhuam, yog li ntawd rau ob qho kev sib raug zoo: fiber ntau nto thiab fiber ntau duab. Muaj plaub txoj hauv kev.
1. Ua rau saum npoo ntawm cov hlau fiber ntau thiab cov ntoo khaub lig. Lub hom phiaj no tuaj yeem ua tiav los ntawm kev siv cov velt extraction txoj kev. Vim hais tias thaum cov steel fiber ntau txias tau txias los ntawm huab cua, qhov saum npoo av tsis sib xws thiab ua ntxhib rau hauv lub ntsej muag crescent, nce thaj chaw ze nrog lub substrate. Lub milled steel fiber muaj ib qho chaw du thiab lwm qhov chaw ntxhib, uas tseem nce thaj chaw tiv tauj nrog cov pob zeb.
2. Kev ua tiav yog ua rau muaj fiber ntau ntawm qee lub sijhawm raws li cov hlau ntawm cov hlau fiber. Piv txwv li, tus "Xin ke" steel fiber ntau ntawm Kobe steel fiber ntawm obo} (c hauv daim duab 1), thiab "s}" thiab "s {{3} } "Steel fibers ntawm Qing'an steel nroj tshuag. Vim tias qhov saum npoo tau nias rau hauv kev ua yeeb yam lossis cov nthwv dej, tus neeg siv khoom siv hluav taws xob tau nce.
3. Ob qhov kawg ntawm cov steel fiber ntau zoo li tus. Piv txwv li, ob kawg ntawm kev ingot milling steel fiber muaj anchoring platforms; Hooks tau ua rau ob qho kawg; Thiab muaj cov hlau loj-taws steel fibers extracted los ntawm melt extraction txoj kev. Vim yog lub thauj tog rau kev nyhuv ntawm ob qho kawg, rub tawm cov kev tiv thaiv tawm tau zoo dua.
4. Qhov saum npoo ntawm cov hlau fiber ntau yog coated nrog epoxy cob thiab saum npoo yog me ntsis xeb. Txoj kev no tsis tau txhim kho kev sib koom ua ke lub zog nrog rau cov kev sib txuam dhau los, tab sis nws tseem muaj qee yam ntxiv dag zog.
Kev ntsuam xyuas los ntawm Kobayashi IK-SUKE, University of Belgium, thiab Zhang Whoocing ntawm steel fibers nrog hooks yog li ob zaug uas ntawm cov tawv loj sib luag. Kobayashi IK-SUKE Qhov kev sim qhia tau hais tias cov nyhuv ntawm ribbed steel fibers yog ze rau tias ntawm steel fibers nrog hooks. Cov kev tshwj xeeb no zoo li cov txiv ntoo sib txawv no tsis tsuas yog txhim kho lub zog ntawm cov hlau fibers, tab sis kuj tseem txhim kho kev nruj. Txawm hais tias corrugated steel fibers muaj cov nyhuv me me rau kev txhim kho lub zog ntawm cov hlau fiber ntau dua, lawv tuaj yeem nce cov tawv me me.
2. Hardness
Txawm hais tias cov txheej txheem twg yog siv los tsim cov steel fibers, lawv ntsib cov kub thiab txias txias thaum ua kev ua, uas yog sib npaug rau lub xeev quenching. Yog li ntawd, qhov saum npoo hardness ntawm steel fibers yog qhov tseem ceeb. Thaum siv rau cov pob zeb ua lub zog thiab sib xyaw, khoov tsis tshua muaj tshwm sim. Yog tias tus steel fiber ntau tawv heev thiab nkig, nws yooj yim tawg thaum sib xyaw, cuam tshuam rau cov nyhuv muaj zog. Thaum tsim cov fibers steel los ntawm cov qauv melt-kos duab, cov steel fibed ntawm hauv qab ntawm lub xeev siab thiab txias thiab txias los ntawm cov kev co lossis kev co conveying txoj kev. Txwv tsis pub, cov steel fibers sib sau ua ke thiab tshav kub yog qhov nyuaj rau dissipate, tab sis nws muaj annealing effect.
3. Corrosion Kuj
Raws li rau kev qhia ntawm corrosion tiv thaiv cov neeg siv plua plav hlau, nws tau paub tias hauv cov chaw muaj fiber ntau Lub tshuab hluav taws xob qhov tob thiab qib ntawm kev corrosion yuav tsim nrog lub sijhawm. Rau cov pob zeb fiber ntau pob zeb ua, siv lub ntsiab yog ARC tom qab tawg thiab lub classing thiab muaj kev sib tsoo tom qab tawg. Txawm hais tias qhov dav dav dav yog me dua li ntawm kev txhawb nqa kev txhawb nqa, muaj cov kab nrib pleb tom qab txhua tus. Yog li ntawd, kev tiv thaiv corrosion yuav tsum tau coj mus rau cov ntaub pua av pob zeb siv rau hauv ib puag ncig noo, tshwj xeeb tshaj yog thaum hiav txwv. Lub ntsej muag ntsuas ua pov thawj tias nyob rau hauv lub chaw ua haujlwm ntawm cov neeg muaj peev xwm sib kis tau, kev siv cov hlau sib kis tau txhim kho cov kab mob loj tuaj yeem txhim kho cov kabmob corrosion. Kev siv cov hlau fiber coated nrog epoxy resin lossis galvanized yuav txhim kho corrosion tsis kam. Yog tias cov txheej txheem tsim qauv, cov fiber ntau no tsuas yog siv rau hauv cov txheej txheem saum npoo av ntawm cov qhob tog {} CM, thiab tsis yog-inductive steel fiber kuj tseem siv tau thaum tsim nyog.