Taw qhia
Kev tawg pob zeb yog ib qho ntawm feem ntau thiab tseem yog qhov teeb meem zoo tshaj plaws hauv kev tsim kho. Kev xyaum engineering dav dav qhia tau hais tias thaum ntxov - muaj hnub nyoog tawg feem ntau tsis yog los ntawm cov khoom siv tsis zoo, tab sis los ntawm kev xaiv tsis raug ntawm kev txhawb nqa lossis kev txhawb zog. Yog li ntawd, xaiv txoj cai ntawm cov pob zeb fiber ntau nyob rau theem pib ntawm qhov project yog qhov tseem ceeb rau kev txhim kho lub sij hawm ntev - kev ua tau zoo, durability, thiab tag nrho cov pob zeb zoo.
Nyob rau hauv niaj hnub precast qhob thiab cam khwb cia- nyob rau hauv - qhov chaw ua vaj tse daim ntaub ntawv, polypropylene (PP) fiber, steel fiber, thiab polyvinyl cawv (PVA) fiber yog peb feem ntau siv cov khoom siv, txhua tus tsim los hais txog cov txheej txheem sib txawv thiab daim ntawv thov scenarios.
Hauv phau ntawv qhia no, peb sib piv PP fiber ntau, steel fiber ntau, thiab PVA fiber ntau los ntawm cov tswv yim engineering, pab koj xaiv cov kev daws teeb meem zoo tshaj plaws raws li cov kev xav tau ntawm kev thauj khoom, kev cuam tshuam ib puag ncig, thiab kev xav txog nyiaj txiag rau koj qhov project pob zeb.
Dab tsi yog Polypropylene Fibers (PP Fibers)?
PP fibers yog hluavtaws monofilaments lossis fibrils ua los ntawm 100% polypropylene. PP fibers yog lub teeb yuag, tshuaj lom neeg ruaj khov, thiab yooj yim sib tov. Lawv lub hom phiaj tsim qauv yog los tswj kev tawg thiab txhim kho cov kav ntev, es tsis yog hloov cov txheej txheem steel hlau. Thaum siv kom raug, lawv tuaj yeem muab kev ua tau zoo ntawm tus nqi qis heev.
Lawv muaj qhov zoo xws li qhov ntom ntom, zoo heev alkali tsis kam, thiab tsis yog -absorbency.
Cov fibers yog sib cais nyob rau hauv lub pob zeb sib tov, ua ib tug peb -sib nrug kev tswj network.
Tsis zoo li steel fibers, PP fibers tsis corrode txawm nyob rau hauv corrosive los yog ntub ib puag ncig.
Hom tshuaj ntau npaum li cas thiab cuam tshuam rau kev ua haujlwm
Kev siv ntau npaum li cas yog 0.6 txog 1.0 kg ib cubic meter ntawm pob zeb.
Ntawm qhov tsim nyog ntau npaum, PP fibers:
tuaj yeem txo cov yas shrinkage tawg los ntawm 80% mus rau 90%.
tuaj yeem txhim kho kev sib raug zoo ntawm cov pob zeb thiab txo kev sib cais.
Thaum uniformly dispersed, lawv muaj kev cuam tshuam tsawg heev rau kev ua haujlwm ntawm pob zeb.
Kev siv ntau dhau yuav tsum tau zam, vim tias cov fibers ntau dhau yuav cuam tshuam me ntsis rau qhov ua tiav.
Cov ntawv thov siv
Precast pob zeb phab ntsa panels thiab pem teb slabs
Muaj cov plag tsev thiab cov txheej txheem leveling
Tunnel linings thiab shotcrete
Cov khoom vaj khoom tsev thiab kev lag luam ua vaj tse
Qhob pavements thiab overlays
Kev txwv
Tsis muab cov qauv thauj khoom-cov kabmob muaj peev xwm
Tsis tuaj yeem hloov rebar lossis steel mesh hauv cov khoom siv
Kev txwv tsis pub muaj txiaj ntsig hauv kev tshaj tawm -kev ua haujlwm tawg
Dab tsi yog Steel Fiber?
Hlau fibers muaj luv luv, dispersed steel filaments ntxiv ncaj qha rau cov pob zeb tshiab thaum lub sij hawm sib tov. Cov duab uas muaj xws li hooked, coiled, ncaj, thiab deformed fibers. Lawv tau siv dav hauv cov qauv ua vaj tse uas xav tau ntau dua toughness, tawg tsis kam, thiab post-cracking load- bearing peev. Tsis zoo li steel tuav lossis meshes, steel fibers yog sib npaug ntawm cov pob zeb matrix, ua rau peb qhov ntev ntawm sab hauv los txhim kho kev ua tau zoo.
Hlau fiber txuas txuas txuas tom qab pib tawg, tso cai rau cov pob zeb txuas ntxiv cov kabmob thiab tiv thaiv tsis ua haujlwm tam sim ntawd.
Qhov no ua rau nws zoo tagnrho rau cov plag tsev thiab pavements raug rov ua dua los yog muaj zog dynamic.
Piv rau cov pob zeb zoo tib yam, cov kab nrib pleb zoo dua thiab sib npaug ntau dua.
Hom Tshuaj Ntau Yam
Qhov ntau npaum li cas yog 20 mus rau 60 kg / m³, nyob ntawm seb tus qauv tsim thiab hom fiber ntau.
Kev noj ntau dua tuaj yeem txhim kho qhov tawv thiab thauj khoom -cov kabmob muaj peev xwm, tab sis kev sib xyaw tsis raug tuaj yeem txo qis kev ua haujlwm me ntsis.
Nrog rau kev sib xyaw tsim thiab batch tswj, steel fiber reinforced pob zeb muaj peev xwm tuav tau zoo pumpability thiab nto zoo.
Kev tsim kho kev ua tau zoo tuaj yeem txhim kho los ntawm kev txo lub sijhawm xav tau rau qhov kev tso kawm ntxiv thiab khi.
Cov ntawv thov siv
Industrial thiab warehouse floors
Txoj kev thiab pem teb
Precast qhob Cheebtsam
Tunnels thiab shotcrete linings
Kev txwv
1. Nyob rau hauv corrosive lossis marine ib puag ncig, cov fibers raug corrode yog tias tsis muaj kev tiv thaiv zoo.
2. Yog tias kev kho deg tsis zoo, cov fibers yuav pom ntawm qhov chaw.
3. Cov nqi khoom siv yog siab dua li cov khoom siv hluavtaws; yog li ntawd, nws qhov laj thawj yuav tsum tau ua kom ncaj ncees los ntawm kev txhim kho hauv cov qauv kev ua tau zoo.
Dab tsi yog PVA Fiber (Polyvinyl Alcohol Fiber)?
PVA fibers yog hydrophilic hluavtaws polymer fibers uas tsim los txhim khu kev ruaj khov, tawg tswj, thiab ntev - lub sij hawm kev ntseeg siab ntawm cov pob zeb. PVA fibers muaj npe nrov rau lawv cov txiaj ntsig zoo nrog cov ntaub ntawv cementitious thiab tau siv dav hauv cov txheej txheem ua vaj tse siab heev uas tawg dav tswj thiab ductility yog qhov tseem ceeb.
Lawv muaj lub zog tensile siab thiab zoo heev elongation.
Lawv ruaj khov nyob rau hauv alkaline qhob ib puag ncig.
Tom qab sib tov meej, cov fibers yog uniformly dispersed.
Hom tshuaj ntau npaum li cas thiab cuam tshuam rau kev ua haujlwm
Cov koob tshuaj ib txwm: 1.0–2.0 kg / m³ (nyob ntawm qhov project)
Qhov tseem ceeb txo qis thaum ntxov thiab ziab shrinkage tawg
Txhim kho kev thauj khoom- cov kabmob muaj peev xwm tom qab tawg yam tsis tau nce ntu tuab
Kev siv ntau dhau tuaj yeem txo qis me ntsis kev ua haujlwm tau zoo
Kev siv ntau:
High -kev ua tau zoo precast qhob slabs
Nyias lub tsev Cheebtsam
Engineering cement-raws li kev sib xyaw (ECC)
Txhaum- cov khoom siv yooj yim thiab capping txheej
Kev txwv:
Cov khoom siv ntau dua
Tsis tsim nyog rau kev hloov steel reinforcement nyob rau hauv siab -load structural cov tswv cuab
Yuav tsum tau ua tib zoo sib xyaw kom tsis txhob muaj fiber ntau clumping
PP Fiber vs Hlau Fiber vs PVA Fiber
| Performance Factor | PP fiber ntau | Hlau Fiber | PVA Fiber ntau |
| Lub luag haujlwm tseem ceeb | Yas shrinkage tawg tswj | Txhim khu kev txhim kho | Micro- tswj kev tawg & ductility |
| Txhaum tswj theem | Thaum ntxov - hnub nyoog theem | Tshaj tawm - theem tawg | Tag nrho kev pabcuam lub neej |
| Tensile zog pab | Tsawg | Siab | Nruab nrab |
| Load-cov kabmob muaj peev xwm | Tsawg kawg | Zoo heev | txwv |
| Bond nrog cement matrix | Mechanical bonding | Mechanical anchorage | Tshuaj sib txuas |
| Impact & qaug zog kuj | Kev txhim kho nruab nrab | Kev txhim kho tseem ceeb | Kev txhim kho zoo |
| Qhov cuam tshuam rau kev ua haujlwm | Tsawg kawg | Nruab nrab | Nruab nrab |
| Surface finish txaus ntshai | Tsis muaj xeb, du nto | Muaj peev xwm raug fiber ntau | Ntxim qab heev |
| Tus nqi raws qib | Tsawg | Nruab nrab-siab | Siab |
Kev sib piv tus nqi thiab Economic Efficiency
Kev sib piv meej ntawm tus nqi thiab kev lag luam ntawm polypropylene (PP) fiber ntau, steel fiber ntau, thiab polyvinyl cawv (PVA) fiber ntau tuaj yeem pab koj txiav txim siab txog kev nqis peev.
Polypropylene Fiber (PP Fiber)
PP fiber muaj cov khoom siv qis tshaj plaws thiab qhov cuam tshuam tsawg tshaj plaws ntawm kev sib xyaw thiab muab cov pob zeb. Nws disperses yooj yim, yuav tsum tsis muaj kev tuav tshwj xeeb, thiab ntxiv zoo tsis muaj zog ntxiv. Rau cov dej num tsom rau cov yas shrinkage tawg tswj thiab txhim kho durability, PP fiber muab cov nqi zoo heev ntawm tus nqi qis tshaj ib lub cubic meter.
Hlau Fiber
Hlau fiber ntau los nrog tus nqi siab dua cov khoom siv, tab sis nws tuaj yeem txo lossis ib nrab hloov ib txwm rebar lossis steel mesh. Qhov no feem ntau ua rau kev txuag nyiaj thiab kev tsim kho sai dua ntawm - nplai lossis hnyav - cov dej num loj.
Polyvinyl cawv (PVA) Fiber
Txawm hais tias PVA fiber ntau muaj cov khoom siv siab tshaj plaws, nws txoj kev tswj xyuas kev ua haujlwm zoo thiab kev ua haujlwm zoo tuaj yeem txo qhov kev kho, kev saib xyuas, thiab tag nrho lub neej - cov nqi voj voog nyob rau hauv siab - daim ntawv thov kev ua tau zoo. Rau nyias lossis tawg - cov ntsiab lus tseem ceeb, nws qhov kev ua haujlwm ntev - feem ntau ua pov thawj qhov kev nqis peev ntau dua.
Yuav Ua Li Cas Xaiv Cov Khoom Siv Hluav Taws Xob Zoo rau Koj Qhov Haujlwm
Thaum xaiv PP, steel, thiab PVA fibers, kev ntsuam xyuas zoo raws li cov khoom siv, ib puag ncig kev pabcuam, thiab lub neej- tus nqi yuav tsum tau ua, tsis yog kev txiav txim siab raws li ib qho kev qhia.
PP fibers, nrog rau lawv cov tshuaj zoo heev inertness thiab lub teeb yuag zog, tuaj yeem tiv thaiv cov yas shrinkage thaum ntxov hauv pob zeb thiab ntxiv yuav luag tsis muaj qhov hnyav. Lawv muab cov nqi tseem ceeb -cov txiaj ntsig zoo hauv cov ntawv thov uas xav tau tshuaj tiv thaiv corrosion, tsis yog - kev tswj kev tawg, thiab lub teeb yuag. Txawm li cas los xij, lawv cov qauv qis ntawm elasticity txwv lawv lub peev xwm los txhim kho lub zog ntawm cov pob zeb tawv tawv.
Cov hlau fibers, nrog rau lawv lub zog siab thiab siab modulus, tuaj yeem txhim kho qhov tensile, flexural, cuam tshuam, thiab qaug zog ua haujlwm ntawm cov pob zeb, ua rau lawv haum rau hnyav- cov qauv ua haujlwm thiab siab - cov ntsiab lus kev ntxhov siab, thiab txawm tias ib nrab hloov cov tsoos steel reinforcement. Txawm li cas los xij, lawv cov kev pheej hmoo corrosion nyob rau hauv ib puag ncig chloride thiab hluav taws xob conductivity yuav tsum tau ceev faj siv hauv corrosive lossis electromagnetically rhiab qhov chaw.
PVA fibers sawv cev rau cov kev taw qhia ntawm siab -kev ua tau zoo cementitious composites. Lawv muaj zog adhesion rau cov cement matrix thiab siab alkali tsis kam ua kom zoo heev tawg dispersion thiab ductility. Txawm hais tias tus nqi pib siab, nws muaj lub neej zoo heev - lub voj voog tus nqi hauv cov qauv nrog cov kev xav tau siab heev rau seismic toughness thiab durability.
Xaus
Hauv cov ntsiab lus, PP fiber ntau, steel fiber ntau, thiab PVA fiber ntau sawv cev peb lub tswv yim sib txawv thiab qhov ntev rau kev txhim kho thiab kev hloov kho. PP fiber ntau yog ib qho kev lag luam thiab muaj txiaj ntsig "tawg- tiv thaiv tus neeg saib xyuas," haum rau loj - nplai pej xeem engineering tej yaam num thiab corrosive ib puag ncig. Hlau fiber ntau muab "pob txha pob txha ntawm lub zog thiab tawv," ua rau nws yog thawj qhov kev xaiv rau kev xav tau ntawm cov khoom siv xws li cov khoom hnyav thiab tawg tsis kam, tab sis qhov kev pheej hmoo ntawm corrosion yuav tsum tau txiav txim siab. PVA fiber ntau, ntawm qhov tod tes, yog "lub cav ntawm siab- kev ua tau zoo toughness," endowing pob zeb uas tsis tshua muaj siab ductility thiab kev tswj kev tawg. Qhov kev xaiv yog nyob ntawm koj qhov project qhov yuav tsum tau ua, cov xwm txheej raug, thiab pob nyiaj siv. Qhov kev xaiv zoo yuav ua rau muaj kev ua tau zoo dua qub, lub neej ua haujlwm ntev dua, thiab kev saib xyuas tsawg dua hauv nws lub neej.
FAQ
Q: Dab tsi yog qhov txawv ntawm PP fiber, steel fiber, thiab PVA fiber ntau?
A: Qhov sib txawv tseem ceeb nyob hauv lawv cov khoom siv kho tshuab thiab theem ntawm kev ua. PP fiber feem ntau tswj thaum ntxov -theem yas shrinkage tawg hauv pob zeb; steel fiber ntau muab cov qauv load-cov kabmob muaj peev xwm thiab txhim kho toughness; PVA fiber ntau ua tiav micro- tawg tawg thiab siab ductility los ntawm kev sib raug zoo ntawm lub ntsej muag.
Q: Dab tsi fiber ntau yog tsim los tiv thaiv kev tawg thaum ntxov?
A: PP fiber ntau yog qhov kev xaiv zoo tshaj plaws. Nws zoo inhibits yas shrinkage cracking, yog tsawg- nqi, muaj zoo dispersion, thiab tsis ho cuam tshuam rau cov pob zeb sib tov proportions los yog tus kheej - nyhav.
Q: Puas muaj steel fiber ntau hloov steel qhov cuab lub zog?
A: Tsis yog, nws tsis tuaj yeem hloov nws tag nrho. Cov hlau fiber ntau tuaj yeem txo lossis ua kom yooj yim steel reinforcement nyob rau hauv qee qhov kev tsim, tab sis nyob rau hauv cov tswv cuab nrog kom meej meej cov kev thauj khoom thiab kev nyuaj siab, nws tseem yuav tsum tau siv ua ke nrog cov tsoos steel reinforcement.
Q: Dab tsi fiber ntau yuav tsum tau nyiam nyob rau hauv corrosive los yog humid ib puag ncig?
A: PP fiber lossis PVA fiber ntau yuav tsum nyiam. Lawv tsis xeb, tiv taus tshuaj lom neeg corrosion, thiab tsim nyog rau kev tsim kho hauv av, cov tsev nyob hauv ntug dej hiav txwv, lossis thaj chaw tshuaj lom neeg.
Q: Vim li cas PVA fiber ntau siv hauv siab -kev ua tau zoo?
A: PVA fibers pom muaj zog heev interfacial adhesion rau cov cement matrix, txhim kho tensile strain peev thiab tawg tawg ntawm pob zeb, ua rau lawv yog ib qho tseem ceeb ntxiv cov khoom siv hauv siab -ductility cementitious composites (ECC).
Q: Dab tsi fiber ntau muaj tus nqi qis tshaj plaws?
A: Los ntawm kev xav ntawm cov khoom siv thawj zaug, PP fibers yog qhov qis tshaj; steel fibers yog nyob rau hauv nruab nrab; thiab PVA fibers yog siab tshaj. Txawm li cas los xij, xav txog tag nrho lub neej- tus nqi voj voog, PVA fibers yog kev lag luam ntau dua hauv cov haujlwm uas muaj kev ruaj khov thiab kev nyab xeeb.
Q: Cov fibers sib txawv puas tuaj yeem sib xyaw hauv tib qhov sib xyaw ua ke?
A: Yog. Hauv qee qhov haujlwm, kev sib txuas ntawm PP fibers + steel fibers lossis PP fibers + PVA fibers yog siv los tswj kev tawg thaum ntxov thiab txhim kho kev ua haujlwm tom qab, tab sis kev sib xyaw ua ke thiab kev tshawb xyuas kev tsim kho yuav tsum tau ua.
