Hlau Fiber Phab ntsa: Hluav taws kub-Resistant Reinforcement rau kev nyab xeeb thiab ntev-Lub tsev kav ntev
Taw qhia: Kev Xav Tau Hluav Taws Xob -Resistant Construction
Hauv kev tsim kho niaj hnub no, kev ruaj ntseg hauv tsev thiab kev ua haujlwm ntev yog qhov tseem ceeb. Ntawm cov xwm txheej sib txawv, hluav taws kub yog ib qho txaus ntshai tshaj plaws rau kev ncaj ncees thiab tib neeg lub neej. Cov txheej txheem kev txhawb nqa ib txwm raug tshuaj xyuas thiab txhim kho kom ua tiav cov kev xav tau kev nyab xeeb hluav taws kub hnyav. Hauv cov ntsiab lus no, steel fiber reinforcement, tshwj xeeb tshaj yog rau cov phab ntsa, tau tshwm sim los ua ib qho tseem ceeb hauv kev tsim hluav taws kub- tiv thaiv kev tsim kho.
Nkag siab txog kev tiv thaiv hluav taws hauv cov khoom siv.
Hauv kev tsim kho, kev tiv thaiv hluav taws yog hais txog cov khoom siv lossis kev sib dhos lub peev xwm los tiv thaiv lossis tiv thaiv hluav taws. Qhov hluav taws kub- feem ntau ntsuas ntsuas ntsuas qhov ntsuas hluav taws xob tiv thaiv hluav taws ntev npaum li cas tuaj yeem tiv taus qhov ntsuas hluav taws kub ib txwm. Lub hom phiaj tseem ceeb rau cov khoom siv xws li cov phab ntsa yog ua kom qhov kub thiab txias ntawm qhov chaw tiv thaiv qis dua 140℃thaum muaj hluav taws kub, yog li khaws cia cov load-cov kabmob muaj peev xwm thiab kev sib cais.
Kev ua tau zoo ntawm cov qauv steel hauv hluav taws yog qhov teeb meem tseem ceeb. Cov hlau qub pib poob lub zog ntawm qhov kub li ntawm 540 degree, ib qho tseem ceeb uas yuav tsum tau tswj kom raug, tuaj yeem ua rau muaj kev puas tsuaj loj. Yog li ntawd, kev txhim kho qhov hluav taws kub tsis kam ntawm steel- cov khoom siv ntxiv yog ib qho tseem ceeb ntawm kev tsim hluav taws xob hluav taws xob tam sim no.
Kev Siv Hlau Fiber hauv Phab Ntsa Kev Tsim Kho
Steel fibers, thaum sib tov rau hauv pob zeb los yog mortar rau phab ntsa, ua raws li peb -dimensional, randomly faib reinforcement. Tsis zoo li cov txheej txheem bar reinforcement, cov micro-reinforcements tiv thaiv kev tawg ntawm micro- theem, uas yog ib qho tseem ceeb thaum hluav taws kub.
1. Mechanism tiv thaiv hluav taws:
Hlau fibers ua rau kom muaj hluav taws kub nyhiab los ntawm ntau yam txheej txheem. Rau qhov pib, lawv ua kom lub zog tensile thiab toughness ntawm cov pob zeb matrix, uas yuav pab kom cov khoom ua ke thaum nws nthuav thiab sib cais nyob rau hauv qhov kub thiab txias. Qhov no tiv thaiv kev tawg tawg, uas tshwm sim thaum chunks ntawm cov pob zeb tawg vim muaj zog nce siab, nthuav tawm thawj qhov kev txhawb nqa kom ncaj qha tshav kub thiab ua kom tsis muaj zog.
2. Kev sib koom ua ke nrog lwm cov tswv yim tiv thaiv hluav taws:
Steel fiber reinforcing feem ntau yog siv los ua ib feem ntawm kev siv hluav taws xob sib xyaw ua ke. Ntxiv cov kev daws teeb meem los tiv thaiv phab ntsa muaj xws li hluav taws kub- cov boards resistant, intumescent xim, thiab tshuaj tsuag- siv tshuaj. Raws li kev tshawb fawb, kev ncaj ncees ntawm cov txheej txheem tiv thaiv no tseem ceeb heev; txawm tias qhov kev puas tsuaj hauv cheeb tsam tuaj yeem ua rau txo qis ntawm ib sab ntawm cov khoom thauj - muaj peev xwm muaj peev xwm thaum muaj hluav taws kub. Steel fibers nyob rau hauv lub pob zeb substrate ua hauj lwm pab raws li ib tug muaj zog thaub qab, kom muaj kev cohesiveness txawm tias thawj qhov hluav taws kub tiv thaiv ib feem tsis muaj zog.
Cov txiaj ntsig ntawm Steel Fiber Reinforcement rau Hluav Taws-Cov phab ntsa tsis kam
Kev koom ua ke ntawm steel fibers rau hauv kev tsim kho phab ntsa muab cov txiaj ntsig tshwj xeeb rau kev nyab xeeb hluav taws thiab kev ua haujlwm ntev:
• Txhim kho Durability thiab Crack Control: Fibers choj micro- tawg los ntawm thermal stress thiab shrinkage, ua rau phab ntsa durability thiab impermeability, uas muaj txiaj ntsim tag nrho lub tsev nyob ntev.
• Txhim kho qhov muaj zog seem tom qab hluav taws kub: Kev tshawb fawb ntawm cov ncej- hluav taws xob cov khoom ntawm cov hlau tshwj xeeb tau pom tias qee qhov siab - lub zog, hluav taws kub - cov qib qib steel resistant (FR) tuaj yeem khaws lossis tseem txhim kho lub zog tawm los tom qab raug kub thiab txias. Thaum txoj kev tshawb no tsom mus rau cov txheej txheem steel, lub hauv paus ntsiab lus qhia txog qhov tseem ceeb ntawm cov khoom siv thaum lub sij hawm thiab tom qab muaj cua sov. Hlau fibers pab khaws cov phab ntsa ntawm cov txheej txheem kev ncaj ncees tom qab hluav taws kub.
• Cov Khoom Siv Ua Tau Zoo thiab Kev Ua Tau Zoo: Fiber- cov khoom siv sib xyaw ua ke daws cov kev txwv ntawm cov khoom siv ib txwm muaj los ntawm kev muab lub zog zoo heev - rau - qhov hnyav piv thiab corrosion kuj. Qhov no yuav pab kom muaj kev ruaj ntseg thiab ruaj khov infrastructure los ntawm kev ua kom muaj kev pab cuam lub neej thiab txo cov kev tu ncua.
• Kev tsim kho yooj yim: Ntxiv cov fibers rau cov pob zeb sib xyaw yog qhov yooj yim tsim nyog thiab tuaj yeem pab tau tshwj xeeb hauv cov phab ntsa geometries los yog kho cov ntawv thov uas muaj kev txwv tsis pub siv, ua kom muaj kev txhawb nqa zoo ib yam thoob plaws hauv lub caij.
Kev txiav txim siab tsim thiab kev coj ua zoo tshaj plaws
Steel fiber reinforcement rau hluav taws kub- cov phab ntsa tiv thaiv yuav tsum tau ua tib zoo npaj:
• Fiber Specification: Hom, daim ntawv, qhov ntev, thiab ntau npaum li cas ntawm cov hlau fibers yuav tsum tau tsim kom tau raws li qhov yuav tsum tau muaj kev tiv thaiv hluav taws, phab ntsa thickness, thiab cov ntaub ntawv loads. Tsis yog tag nrho cov hlau fibers yog tib yam; lawv cov kev ua tau zoo ntawm qhov kub thiab txias yuav tsum tau ntsuas.
• Composite System Design: Kev tiv thaiv hluav taws feem ntau raug soj ntsuam siv tag nrho - ntsuas kev sim lossis kev suav uas xav tau kev nkag siab ntawm cross-sectional temperature distribution. Cov neeg tsim qauv yuav tsum tshuaj xyuas cov phab ntsa tag nrho, suav nrog pob zeb, fibers, thiab lwm yam kev tiv thaiv hluav taws ntxiv.
• Zoo thiab Adhesion: Zoo ib yam li galvanized reinforcement, uas nthuav tawm siab adhesion ntawm txheej thiab pob zeb, kev sib txuas ntawm cov hlau fibers thiab cov cement matrix yog qhov tseem ceeb rau kev ua tiav kev ntxhov siab, tshwj xeeb tshaj yog nyob rau hauv thermal loading.
• Ua raws li Cov Qauv: Kev tsim kho yuav tsum ua raws li cov cai thiab cov qauv siv hluav taws xob uas siv tau, uas tau sau cov txheej txheem kev sim thiab cov txheej txheem ua haujlwm yam tsawg kawg nkaus rau hluav taws kub- cov rooj sib txoos tiv taus.
Xaus: Tsim kom muaj kev nyab xeeb yav tom ntej.
Kev tsav tsheb kom muaj kev nyab xeeb dua, cov qauv muaj zog dua yog thawb kev nce qib hauv cov khoom siv thiab thev naus laus zis. Steel fiber reinforcing rau phab ntsa yog ib txoj kev loj hlob nyob rau hauv passive hluav taws tiv thaiv mus kom ze. Cov hlau fibers ua lub luag haujlwm tseem ceeb hauv kev txhim kho cov qauv kev ua haujlwm thaum muaj hluav taws kub los ntawm kev ua kom cov hluav taws kub nyhiab ntawm cov phab ntsa pob zeb, txo cov tawg tawg, thiab ua hauj lwm hauv tandem nrog rau lwm txoj kev tiv thaiv hluav taws.
Raws li kev lag luam nce siab, kev txhim kho txuas ntxiv thiab kev siv cov khoom siv siab tshaj - xws li steel fibers, nrog rau cov tswv yim tsim kev nyab xeeb hluav taws muaj zog, yog qhov tseem ceeb rau kev tsim kho vaj tse uas tsis yog ua raws li cov qauv kev nyab xeeb niaj hnub no xwb tab sis yuav kav mus rau ntau tiam neeg. Kev nqis peev hauv hluav taws kub- tiv thaiv kev tiv thaiv yog kev nqis peev hauv kev nyab xeeb ntawm lub neej, kev tiv thaiv vaj tse, thiab lub tsev zoo ib puag ncig.