Basalt Fibers Txhim kho Carbonation Resistance ntawm pob zeb
I. Mechanism of anti-carbonation action: multi-scale synergistic optimization
1. Pore qauv thiab tawg inhibition
Basalt fibers inhibit cov yas shrinkage thaum ntxov hauv pob zeb (30% -50% txo qhov dav) thiab thaiv CO₂ diffusion txoj hauv kev los ntawm peb-seem mesh faib. Cov khoom siv dej ntom ntom tsim los ntawm fiber ntau-matrix interface tuaj yeem txo qhov feem pua ntawm cov pores teeb meem (> 100 nm) los ntawm 18.6% mus rau 12.3%, txo qis permeability.
2. Kev ua dej num hloov kho thiab Tshuaj kev sib koom ua ke
Fiber nto roughness txhawb CSH gel heterogeneous nucleation, accelerating cov tshuaj tiv thaiv hydration, 28 hnub hydration degree nce 8% -12%. Thaum sib xyaw nrog cov ntxhia ntxhia (xws li, silica fume), volcanic tshauv cuam tshuam nrog fiber ntau puas-txo cov nyhuv txo tag nrho cov porosity los ntawm 40%, thiab qhov kev faib ua feem ntawm qhov pores tsis muaj teeb meem (
II.Engineering xyaum thiab nyiaj txiag pab
1. Txoj kev ua neej ntev heev
Kev ua haujlwm siab Basalt Fiber ntau asphalt qhob tshawb fawb thiab tsim los ntawm Yangzhou University, rutting kuj nce los ntawm 20% -40%, qaug zog cracking kuj nce los ntawm 2-8 lub sij hawm, txij nkawm ncua sij hawm ncua ntawm 3-5 xyoo mus rau 6-8 xyoo, mus sij hawm tu nqi txuag tau zoo heev.
2. Txhim kho kev ua tau zoo ntawm cov pob zeb ua dua tshiab
Kev tshawb fawb qhia tau hais tias thaum siv cov pob zeb ua kom rov ua dua tshiab (RAC) yog tov nrog 2 kg / m³ basalt fibers, carbonation qhov tob yog txo los ntawm 41% piv nrog cov khoom siv rov ua dua qub, thiab qhov zoo tshaj plaws carbonation kuj tau ua tiav nrog 50% recycled aggregate hloov tus nqi.
III. Yav Tom Ntej Trends and Challenges
1. Kev tshawb fawb ntau qhov sib txuas
Yuav tsum tau tshawb fawb ntxiv txog kev ua haujlwm ntev nyob rau hauv carbonation-chloride ntsev-load coupling, cov ntaub ntawv ua ntej qhia tias carbonation tus nqi ntawm fiber ntau hauv qab 0.5 npaug ntawm qhov kawg load tseem yog 28% qis dua.
2. Kev soj ntsuam xyuas kev sib koom ua ke
Kev cog qoob loo ntawm carbonation-sensing optical fiber thiab fiber ntau network, real-time taug qab ntawm carbonation pem hauv ntej (qhov tseeb ± 0.1 hli), muab cov ntaub ntawv txhawb kev tiv thaiv.
Basalt fiber ntau muab ntau theem kev daws teeb meem rau cov qhob carbonation tsis kam los ntawm microstructure optimization thiab macro kev ua tau zoo. Nrog rau kev txhim kho cov txheej txheem txheej txheem thiab thev naus laus zis thev naus laus zis, nws daim ntawv thov yuav nthuav dav los ntawm txoj kev thiab txuas hniav mus rau marine engineering thiab lwm yam kev lag luam, txhawb kev ruaj khov ntawm kev tsim vaj tsev rau lub sijhawm tshiab.
