Kawm txog kev ua haujlwm adhesion ntawm basalt fiber reinforced cementitious cov ntaub ntawv nrog BFRP tendons

Core influencing yam tseem ceeb ntawm kev sib txuas ua haujlwm

1. Fiber ntim doping thiab ntev

Volume doping ntawm Basalt Cov xov paj luv luv muaj qhov cuam tshuam tseem ceeb ntawm kev sib khi lub zog, thiab qhov kev ntsuam xyuas qhia tau hais tias qhov ntim doping ntawm 0.2% muaj qhov zoo tshaj plaws ntawm kev sib txuas lub zog, thiab ntau dhau doping tuaj yeem ua rau poob qis hauv kev ua haujlwm vim fiber ntau agglomeration.

Fiber ntev (piv txwv li 6mm thiab 18mm) tsis tshua muaj txiaj ntsig ntawm daim ntawv cog lus lub zog, tab sis luv fibers yog yooj yim dua dispersed kom txo tau interfacial defects.

2. Cov chav kawm muaj zog ntawm cov pob zeb ua dua tshiab

Ua kom muaj zog qib ntawm cov pob zeb uas siv dua tshiab (piv txwv li, los ntawm C30 txog C40) txhim kho qhov kev sib raug zoo ntawm BFrp Kev Txhim Kho thiab lub substrate, tab sis qhov nce yog txwv, thiab lub interface yog susceptible rau brittle tev thaum lub zog qib siab dhau lawm.

3. Interface kho thiab coupling tus neeg sawv cev

Sandblasting nto ntawm BFRP qhov cuab lub zog tuaj yeem ua rau muaj kev ntxhib los mos thiab txhim kho lub zog ntawm kev sib tsoo; Ntxiv silane coupling tus neeg sawv cev tuaj yeem txhim kho cov tshuaj sib txuas ntawm fiber ntau thiab resin matrix thiab txo qhov cuam tshuam ntawm kev sib tsoo.

Kev ntsuam xyuas thiab cov txheej txheem ntawm cov khoom nplaum

1. Center rub tawm kev xeem

Cov ntawv cog lus-slip nkhaus tau kawm los ntawm kev sim rub tawm, thiab nws tau pom tias hom kev puas tsuaj yog feem ntau cov leeg rub tawm lossis pob zeb sib cais. Qhov ntxiv ntawm basalt fibers tuaj yeem ncua qhov kev puas tsuaj ntawm pob zeb thiab txhim kho cov ductility.

Qhov kev sib raug zoo ntawm kev sib raug zoo yog 6-12 MPa, thiab tus nqi tshwj xeeb yog cuam tshuam los ntawm kev siv fiber ntau, kev txhawb nqa txoj kab uas hla (piv txwv li, 16 hli) thiab cov txheej txheem kho interface.

2. Bond stress distribution model

Cov kev ntxhov siab ntawm daim ntawv cog lus yog faib tsis raws li qhov ntev ntawm qhov kev txhawb nqa, thiab qhov siab tshaj plaws kev ntxhov siab yog concentrated ntawm qhov kawg ntawm kev thauj khoom. Tus qauv theoretical yuav tsum xav txog qhov tawg txuas ntxiv tsis kam thiab cuam tshuam kev sib txhuam ntawm fiber ntau pob zeb.

Qhov zoo ntawm daim ntawv thov thiab engineering rooj plaub

1. Corrosion kuj thiab durability

BFRP qhov cuab lub zog khaws ntau dua 90% ntawm nws daim ntawv cog lus lub zog nyob rau hauv chloride ion erosion ib puag ncig (xws li, marine engineering), uas yog qhov zoo dua li cov hlau thiab fiberglass reinforcing tuav.

Cov ntaub ntawv hauv lub ntsiab lus: Qingdao Hla-Hiav Txwv Choj tau txais kev txhawb nqa BFRP los hloov cov hlau reinforcement, thiab nws lub neej expectancy tau txuas mus rau ntau tshaj 100 xyoo.

2. Lub teeb yuag thiab Seismic Performance

Qhov ceev ntawm BFRP qhov cuab lub zog yog tsuas yog 1/4 ntawm cov hlau, uas tuaj yeem siv los txhawb cov pob zeb ua ke kom txo qhov hnyav ntawm cov qauv los ntawm 20% -30%, thiab tib lub sijhawm txhim kho lub zog seismic zog los ntawm kev qhwv lub zog.

Cov kev sib tw uas twb muaj lawm thiab kev coj ua kom zoo

1. Interfacial daim ntawv cog lus muaj zog

Cov teeb meem uas twb muaj lawm: Qhov sib cuam tshuam ntawm fibers thiab cement matrix yog qhov yooj yim rau tev tawm vim kev ntxhov siab, thiab nano-hloov interfacial agents (xws li nano-SiO₂ doped) yuav tsum tau tsim los txhim kho kev sib raug zoo tshuaj.

2. Kev ua haujlwm ntev ntev thiab kev tsim qauv

Tsis muaj cov ntaub ntawv nkag mus ntev nyob rau hauv qhov kub thiab txias (piv txwv li, ntau tshaj 10 xyoo), kev ntsuas kev laus yuav tsum tau ua kom paub tseeb; Cov qauv tsim tshwj xeeb tseem tsis tau muaj nyob thoob plaws lub tebchaws, thiab txawm hais tias Tuam Tshoj tau tshaj tawm tus qauv GB / T 38143-2019, cov txheej txheem tsim qauv nthuav dav tseem yuav tsum tau txhim kho.

3. Multi-scale kev sib koom tes tsim

Nyob rau hauv lub neej yav tom ntej, peb tuaj yeem tshawb txog hybrid technology ntawm BFRP txhawb nqa thiab steel fiber ntau / carbon fiber los tsim gradient composites thiab sib npaug lub zog thiab ductility.

Cov Lus Qhia Txog Kev Tshawb Fawb Yav Tom Ntej  

1. Kev soj ntsuam ntse thiab kev tsim qauv digital

Embedded fiber optic sensors nyob rau hauv BFRP tendons, real-time saib xyuas ntawm daim ntawv cog lus interface strain thiab tawg txoj kev loj hlob, ua ke nrog finite caij simulation kom optimize tus tsim.

2. Tsawg-carbon txheej txheem npaj

Txo cov basalt fiber ntau yaj thiab qhov kub thiab txias (tam sim no 1400-1500 ℃), kev txhim kho ntawm qhov kub thiab txias curing resin kom txo tau lub zog noj.

3. Kev siv tau zoo ntawm cov khoom siv rov ua dua tshiab

Muab cov khoom siv rov ua dua tshiab thiab basalt fiber ntau nrog cov khoom siv pov tseg los txhawb "tag nrho cov khoom siv txuas ntxiv dua tshiab" ntsuab vaj tsev thiab txo cov peev txheej siv.

Cov ntsiab lus

Kev tshawb fawb txog kev sib koom ua ke ntawm basalt fiber ntau cov khoom siv cementitious thiab BFRP tendons tau ua tiav cov txiaj ntsig ntawm theem los ntawm theem, tab sis nws daim ntawv thov loj tseem yuav tsum tau tawg los ntawm cov fwj ntawm kev ua kom zoo dua qub, kev txheeb xyuas lub sij hawm ntev thiab kev tsim qauv. Nyob rau hauv lub neej yav tom ntej, los ntawm multidisciplinary cross-innovation (xws li, cov ntaub ntawv ntse, cov txheej txheem uas tsis muaj cov pa roj carbon monoxide), nws yuav tsum paub txog technology breakthroughs nyob rau hauv lub teb ntawm marine engineering thiab av qeeg resistant reinforcement, thiab pab txoj kev loj hlob ntawm sustainable vaj tse.