Taw qhia
Ntau tus neeg ntseeg yuam kev tias kev ntxiv fiber ntau rau pob zeb tuaj yeem tshem tawm qhov tawg. Txawm li cas los xij, hauv kev tsim kho tiag tiag, cov kab nrib pleb tseem tuaj yeem tshwm sim txawm tias nyob hauv fiber ntau -cov pob zeb ntxiv. Hauv phau ntawv qhia no, peb yuav piav qhia txog cov laj thawj feem ntau ntawm kev tawg hauv fiber ntau - cov pob zeb ua kom muaj zog thiab qhia tias kev xaiv cov khoom tsim nyog, sib xyaw tsim, thiab kev tsim kho yuav pab txo qis kev pheej hmoo tawg.
Ntsiab Cai
Cov pob zeb tseem tuaj yeem tawg txawm tias tom qab cov fibers ntxiv, vim tias kev tawg feem ntau tshwm sim los ntawm ntau yam xws li kev sib xyaw tsim, kev tsim kho thiab kev kho, kev ntxhov siab sab nraud, thiab kev txwv kev ua haujlwm ntawm cov fibers lawv tus kheej. Lub luag haujlwm tseem ceeb ntawm fibers yog txhawm rau txhim kho pob zeb ua kom tawv thiab txo qis micro- tawg thaum ntxov, tab sis lawv tsis tuaj yeem tshem tawm cov txheej txheem lossis ntau dhau - cuam tshuam cov kab nrib pleb. Hauv kev siv cov tswv yim, xaiv hom fiber ntau uas tsim nyog, ua kom zoo ntawm cov pob zeb sib xyaw, thiab ua raws li kev tsim kho thiab kho kom zoo yog qhov tseem ceeb rau kev txo qis kev pheej hmoo ntawm kev tawg thiab txhim kho lub sij hawm ntev - lub sij hawm durability thiab cov qauv kev ruaj ntseg.
Ua rau pob zeb tawg:
Kev txwv ntawm Fiber Performance
Txawm hais tias fibers tuaj yeem txhim kho pob zeb tawv thiab pab txo qis micro- tawg thaum ntxov, lawv qhov kev ua tau zoo tseem muaj kev txwv. Polypropylene fibers muaj qhov qis dua elastic modulus dua li cov pob zeb, yog li nyob rau hauv tensile los yog thermal stress, deformation ntawm fibers thiab cov pob zeb matrix tsis tuaj yeem nyob twj ywm synchronized. Raws li qhov tshwm sim, micro- cracks tseem tuaj yeem txhim kho. Steel fibers muab lub zog ntau dua, tab sis lawv tseem tuaj yeem tawg nyob rau hauv cov xwm txheej nyuaj heev.
Tsis tas li ntawd, qhov tawg - tswj cov txiaj ntsig ntawm fibers feem ntau siv tau thaum lub sij hawm yas ntawm pob zeb. Fibers ua tau zoo nyob rau hauv kev txo cov yas shrinkage tawg, tab sis lawv muaj kev txwv tsis pub muaj kev tiv thaiv tom qab - theem kub tawg, tawg tawg, los yog overload - cuam tshuam cov kab nrib pleb. Fibers tsis tuaj yeem hloov steel reinforcement nyob rau hauv nqa cov yam ntxwv loads.
Tsis tsim nyog raw khoom xaiv thiab sib xyaw tsim
Cov khoom siv cementitious ntau dhau tuaj yeem ua rau muaj kev ntxhov siab hauv cov pob zeb. Txhawm rau ua kom tau raws li kev siv dej thiab kev ua haujlwm, qee qhov kev sib xyaw ua ke siv cov cement ntau dua thiab cov xuab zeb sib piv. Txawm li cas los xij, cov khoom siv cementitious ntau dhau tuaj yeem ua rau lub zog deformation thaum lub sij hawm hardening, tshaj qhov tawg - tswj lub peev xwm ntawm fibers thiab ua rau tawg.
Kev xaiv tsis raug ntawm kev sib sau ua ke thiab cov khoom sib xyaw kuj tuaj yeem cuam tshuam kev tawg. Cov ntsiab lus av nkos siab, cov qhab nia tsis zoo, lossis kev siv cov khoom siv tsis raug tuaj yeem txo cov pob zeb ntom ntom, tsim cov ntsiab lus kev ntxhov siab sab hauv, thiab ua rau muaj kev pheej hmoo ntawm kev tawg.
Tsis tas li ntawd, hom fiber ntau yuav tsum ua raws li qhov project ib puag ncig. Cov fibers sib txawv tsim nyog rau cov xwm txheej sib txawv, xws li hnyav- cov qauv thauj khoom, qis- qhov chaw kub, lossis qhov chaw ntub thiab corrosive. Yog tias cov fiber ntau tsis raug xaiv, nws qhov kev ua tau zoo tsis tuaj yeem ua tiav, thiab cov pob zeb tseem tuaj yeem tawg.
Kev tsim kho tsis raug
Tsis sib xws fiber ntau dispersion yog ib qho ua rau tawg. Yog tias qhov kev txiav txim pub mis tsis raug lossis lub sijhawm sib xyaw luv dhau, cov fibers tuaj yeem sib sau ua ke, tawm hauv qee qhov chaw tsis zoo thiab feem ntau yuav tawg.
Kev nchuav tsis raug thiab kev vibration kuj txo cov kab nrib pleb. Kev poob siab ntau dhau tuaj yeem ua rau muaj kev sib cais, dhau - kev vibration tuaj yeem ua rau cov fibers rau saum npoo, thiab kev co tsis txaus tuaj yeem txo qis pob zeb. Ntxiv dej ntxiv rau ntawm qhov chaw ntxiv ua rau qhov sib tov tsis muaj zog thiab txo cov fiber ntau sib txuas.
Kev ua tiav tsis zoo tuaj yeem tsim qhov tsis xws luag. Kev ua tiav ntxov dhau los cuam tshuam cov pob zeb, thaum ua tiav lig ua rau nws nyuaj rau kaw thaum ntxov micro- tawg. Yog tsis muaj kev kho kom zoo, kev poob dej sai sai yuav ua rau kom qhuav shrinkage tawg.
Kho thiab Sab Nraud Environmental Factors
Kev kho tsis txaus yog qhov ua rau tawg ntawm fiber ntau -cov pob zeb ntxiv. Yog hais tias qhov saum npoo tsis npog los yog watered nyob rau hauv lub sij hawm tom qab pouring, tshwj xeeb tshaj yog nyob rau hauv kub los yog cua kub tej yam kev mob, nto noo noo yuav evaporate sai heev. Qhov no tsim kom muaj qhov sib txawv ntawm qhov sib txawv ntawm qhov chaw thiab sab hauv, ua rau kom qhuav shrinkage tawg. Lub sijhawm luv luv kuj tuaj yeem cuam tshuam cov cement hydration thiab ua rau tsis muaj zog ntawm cov fibers thiab cov qhob matrix.
Kev hloov pauv kub thiab av noo tuaj yeem ua rau muaj kev pheej hmoo tawg. Hauv cov pob zeb loj, hydration cua sov tuaj yeem tsim qhov kub sib txawv ntawm sab hauv thiab saum npoo, ua rau muaj kev ntxhov siab thermal. Txias-thaw voj voog nyob rau lub caij ntuj no, qhov kub thiab txias nyob rau lub caij ntuj sov, thiab rov ntub dej- voj voog qhuav tuaj yeem txo qhov ntev - kev ua tau zoo ntawm ob qho tib si pob zeb thiab fibers.
External loads yog lwm yam. Lub hauv paus tsis sib haum, kev thauj khoom hnyav, thiab kev vibration cuam tshuam tuaj yeem ua rau cov qauv deformation. Fibers tuaj yeem txhim kho toughness, tab sis lawv tsis tuaj yeem tiv thaiv cov kab nrib pleb uas tshwm sim los ntawm kev sib hais los yog overloading.
Yuav ua li cas kom tsis txhob tawg hauv Fiber Reinforced Concrete
Xaiv Txoj Cai Fiber Hom
Polypropylene fiber ntauyog tsim rau kev tswj cov yas shrinkage tawg thiab feem ntau yog siv rau hauv pem teb, txheej txheej, thiab kev tawg dav dav - tswj daim ntawv thov.Hlau fiber ntaulos yog macro hluavtaws fiber ntau zoo dua rau hnyav-load, cuam tshuam- tiv taus, thiab siab- cov phiaj xwm toughness. Nyob rau hauv ib puag ncig tshwj xeeb, kev tiv thaiv corrosion thiab ntev - lub sij hawm ruaj khov yuav tsum tau txiav txim siab.
Hom Concrete Fiber Reinforcement
Polypropylene Fiber (PP Fibers)
Polyacrylonitrile Fiber (PAN Fiber)
Polyvinyl cawv Fiber (PVA Fiber)
Polyester Fiber (PET Fiber)
Cellulose Fibers
Basalt Fiber ntau
Hlau Fibers rau pob zeb
Imitation Steel Fiber ntau
Polypropylene Twisted Fiber ntau
Tswj kom zoo Fiber Dosage
Yog tias qhov ntau npaum li cas qis dhau lawm, qhov kev sib tsoo muaj txiaj ntsig zoo - tswj lub network tsis tuaj yeem tsim. Yog tias cov tshuaj ntau dhau lawm, kev ua haujlwm yuav txo qis, ua rau fiber ntau clumping thiab nce voids. Qhov ntau npaum li cas yuav tsum tau txiav txim siab raws li kev sib xyaw ua ke tsim, kev tsim kho, thiab qhov yuav tsum tau ua, tsis yog tsuas yog nce tus nqi dig muag.
Ua kom zoo rau kev sib xyaw tsim thiab cov khoom siv raw zoo
Cov ntsiab lus ntawm cov cement ntau dhau, cov xuab zeb tsis tsim nyog, cov qhab nia tsis zoo, lossis cov av nkos siab tuaj yeem ua rau muaj kev pheej hmoo ntawm kev tawg thiab tawg. Cementitious cov ntsiab lus yuav tsum tau tswj kom zoo, cov khoom sib xyaw tsim nyog yuav tsum raug xaiv, thiab cov khoom sib xyaw ua ke yuav tsum nyob ruaj khov.
Tswjhwm nruj dej -Cement ratio
Ntxiv dej rau ntawm qhov chaw tuaj yeem txo cov pob zeb ua kom muaj zog, nce shrinkage, thiab tsis muaj zog ntawm cov fibers thiab cov cement paste. Kev ua haujlwm yuav tsum tau txhim kho los ntawm kev sib xyaw tsim thiab cov khoom siv sib xyaw, tsis yog los ntawm kev ntxiv dej ntxiv.
Xyuas kom meej txawm tias Fiber Dispersion
Kev noj zaub mov tsis zoo lossis kev sib xyaw tsis txaus tuaj yeem ua rau muaj fiber ntau clumping, tawm hauv qee qhov chaw tsis muaj kev tiv thaiv tawg. Txoj kev sib xyaw kom raug yuav tsum tau siv los xyuas kom meej tias cov fibers tau sib npaug sib npaug thoob plaws hauv cov pob zeb.
Standardize Pouring, Vibration, thiab Finishing
Tshaj qhov siab ntawm qhov siab tuaj yeem ua rau muaj kev sib cais. Kev co tsis txaus yuav txo qhov compactness, thaum dhau - kev co yuav ua rau cov fibers ntab mus rau saum npoo. Lub sij hawm ua tiav yuav tsum tau tswj kom zoo, thiab lwm yam troweling yuav siv tau thaum tsim nyog los txo qhov ziab kom qhuav shrinkage tawg.
Txhim kho Subgrade Preparation thiab tswj kev sib koom tsim
Lub subgrade yuav tsum tiaj tus, ruaj khov, thiab zoo compacted los tiv thaiv kev sib tsoo tom qab. Tswj kev sib koom ua ke sib nrug, qhov tob, thiab lub sijhawm txiav yuav tsum ua raws li cov qauv tsim los coj kev txav txav thiab txo qis kev sib tsoo.
Txhim kho Curing tom qab nchuav
Tom qab pouring, pob zeb yuav tsum tau them, watered, los yog kho nrog curing tebchaw nyob rau hauv lub sij hawm los tiv thaiv sai sai deg noo noo. Hauv cov ntawv kub, cua, txias, lossis cov pob zeb loj, kev khaws cov dej noo, rwb thaiv tsev, thiab kev tswj qhov kub thiab txias yog qhov tseem ceeb.
Cov ntsiab lus
Cov pob zeb tseem tuaj yeem tawg tom qab cov fibers ntxiv, feem ntau yog vim muaj kev sib xyaw ua ke ntawm fiber ntau cov kev txwv, kev tsim tsis zoo, kev tsim kho tsis zoo thiab kev kho kom zoo, thiab cov khoom siv sab nraud. Fibers tuaj yeem txhim kho cov pob zeb tawv tawv thiab txo cov micro- tawg thaum ntxov, tab sis lawv tsis tuaj yeem hloov cov qauv tsim thiab cov qauv tsim qauv. Hauv cov haujlwm ua tau zoo, xaiv hom fiber ntau zoo, ua kom zoo tshaj qhov sib xyaw tsim, tswj kev tsim kho kom zoo, thiab kev kho kom muaj zog yog qhov tseem ceeb rau kev txo qis kev pheej hmoo ntawm kev tawg thiab txhim kho cov qauv kev ruaj ntseg thiab ntev - lub sij hawm durability.
FAQ
Q: Puas yog pob zeb fiber ntau tiv thaiv kev tawg?
A: Tsis yog. Cov khoom siv fiber ntau tuaj yeem txo cov micro- tawg thiab yas shrinkage tawg, tab sis nws tsis tuaj yeem tiv thaiv txhua hom kev tawg. Cov kab nrib pleb, kev sib haum xeeb, qhov kub thiab txias, thiab ntau dhau - cuam tshuam cov kab nrib pleb tseem xav tau kev tswj xyuas los ntawm kev tsim kom zoo, steel reinforcement, tswj cov pob qij txha, thiab kho kom zoo.
Q: Puas yog ntxiv fiber ntau ib txwm txo qhov tawg zoo dua?
A: Tsis tas li. Cov fiber ntau tsawg dhau tsis tuaj yeem tsim qhov tawg tau zoo- tswj kev sib koom tes, thaum fiber ntau tuaj yeem txo qis kev ua haujlwm, ua rau fiber ntau clumping, nce voids, thiab txawm cuam tshuam cov pob zeb zoo. Qhov ntau npaum li cas yuav tsum tau txiav txim raws li kev sib xyaw tsim thiab qhov project yuav tsum tau ua.
Q: Hom kab nrib pleb twg tuaj yeem ua cov pob zeb ua fiber ntau tswj tau?
A: Cov khoom siv fiber ntau yog siv los tswj cov yas shrinkage tawg, micro- tawg thaum ntxov, thiab cov kab nrib pleb tshwm sim los ntawm kev poob dej sai sai. Nws kuj tseem tuaj yeem txhim kho toughness thiab cuam tshuam tsis kam, ua rau nws nquag siv hauv pem teb, pavements, thiab precast qhob Cheebtsam.
Q: Cov fiber ntau puas tuaj yeem hloov kho steel?
A: Nyob rau hauv feem ntau structural tej yaam num, no. Fiber tuaj yeem txhim kho kev ua kom tawg thiab ua kom tawv, tab sis nws tsis tuaj yeem hloov pauv steel qhov cuab lub zog rau kev nqa cov khoom siv thawj zaug. Load-cov qauv bearing feem ntau tseem xav tau rebar lossis mesh reinforcement.
Q: Vim li cas fiber ntau dispersion tseem ceeb?
A: Tsis sib xws fiber ntau dispersion tsis muaj zog tawg - tswj kev ua haujlwm. Yog tias cov fibers clutch ua ke, qee qhov chaw yuav muaj fiber ntau ntau thaum lwm qhov chaw tsis muaj kev tiv thaiv, ua rau cov cheeb tsam tsis muaj zog yuav tawg ua ntej.
Q: Yuav ua li cas tawg nyob rau hauv fiber ntau -cov pob zeb ua kom muaj zog yuav txo tau?
A: Xaiv hom fiber ntau thiab ntau npaum li cas, txhim kho qhov sib xyaw tsim, tswj cov dej - cement ratio, xyuas kom meej tias fiber ntau dispersion, npaj cov subgrade kom zoo, txiav tswj cov pob qij txha kom raug, thiab ntxiv dag zog kho tom qab nchuav.
