Cov Nyhuv ntawm Basalt Fiber rau Kev Ua Haujlwm ntawm Permeable Concrete
Cov fiber basalt, ua ib yam khoom tshiab uas tsis muaj organic, ua tau zoo heev, thiab tsis ua rau ib puag ncig puas tsuaj, ua rau cov khoom siv kho tshuab, ua kom ruaj khov, thiab ua haujlwm tau zoo dua. Hauv qab no yog kev tshuaj xyuas ntau yam ntawm nws cov kev cuam tshuam thiab cov kev ntsuas kev ua kom zoo dua:
- Kev cuam tshuam rau cov khoom siv kho tshuab
Txhim Kho Lub Zog Compressive thiab Flexural
Cov fiber basalt Kev txhawb zog ua rau lub zog compressive thiab flexural ntawm cov pob zeb permeable zoo dua. Cov kev tshawb fawb qhia tau hais tias cov fibers tsim cov qauv network peb-seem, ua kom muaj zog ntawm kev sib txuas ntawm cov pob zeb sib xyaw thiab cov cement nplaum thaum tiv thaiv kev tawg. Piv txwv li:
Lub Zog Nqus: Nrog 12 hli thiab 24 hli fibers, lub zog nqus pib nce thiab tom qab ntawd txo qis nrog cov fiber ntau dua. Qhov koob tshuaj zoo tshaj plaws yog 0.1% -0.15% (los ntawm ntim), nrog 24 hli fibers ua tiav lub zog nqus siab tshaj plaws ntawm 24.3 MPa (ntawm 0.1% koob tshuaj).
Lub Zog Flexural: Qhov ntev ntawm cov fiber muaj qhov cuam tshuam ntau dua rau lub zog flexural. Piv txwv li, 18 hli fibers nce lub zog flexural los ntawm 66.44% piv rau cov pob zeb tiaj tus vim yog kev sib txuas ntawm cov fiber ntau ntxiv los ntawm kev sib cuag ntawm cov fiber ntau.
Kev Txhim Kho Kev Ruaj Ntseg thiab Kev Ua Tau Zoo
Qhov "bridging effect" ntawm Basalt Fibers txhim kho kev tawv, hloov hom kev ua tsis tiav los ntawm brittle mus rau ductile. Kev tshuaj xyuas microscopic qhia tau hais tias cov fibers ua kom cov qauv pob txha ruaj khov hauv cov cement matrix, zoo thaiv kev loj hlob ntawm qhov tawg.
Kev cuam tshuam rau kev nkag tau
Txo Cov Coefficient Permeability
Kev siv cov fiber ntau ua rau cov qhov hws tsis nkag tau zoo, ua rau cov permeability tsawg dua. Piv txwv li, kev nce cov fiber ntau los ntawm 0.05% mus rau 0.2% maj mam txo cov permeability coefficient, tab sis nws tseem ua tau raws li cov lus qhia (piv txwv li, permeability >1 mm/s ntawm 20% porosity).
Kev Sib Npaug ntawm Porosity thiab Fiber Parameters
Cov fibers ntev dua (piv txwv li, 12 hli → 24 hli) me ntsis ua rau porosity nce tab sis tseem txo qhov permeability.
Kev sib xyaw ua ke ntawm cov fibers nrog cov khoom siv minerals (piv txwv li, cov tshauv ya) ua kom cov qauv pore zoo dua, txo qhov permeability poob thaum tswj lub zog.
- Kev Tiv Thaiv Frost Zoo Dua
Cov fibers basalt txhim kho kev ruaj khov ntawm cov qauv sab hauv, ua rau muaj kev tiv thaiv te ntau ntxiv:
Tom qab 100 lub voj voog khov-thaw, cov qauv fiber-strengthened qhia txog qhov poob phaus tsawg li 0.9% thiab khaws cia 62.5% dynamic dynamic elastic modulus.
Kev sib koom tes nrog cov tshauv ya (piv txwv li, 6% cov tshauv ya + 6 kg / m³ fibers) ua tiav qhov zoo tshaj plaws tiv taus te, vim tias cov tshauv ya txhim kho cov qauv pore thaum cov fibers tswj kev tawg khov-thaw.
- Cov Kev Ntsuas Tseem Ceeb ntawm Kev Txhim Kho
Qhov Ntev ntawm Fiber: Cov fibers 24 hli raug pom zoo rau kev sib npaug ntawm lub zog thiab permeability, txawm hais tias 18 hli fibers zoo heev hauv lub zog flexural.
Qhov ntau npaum li cas: 0.1%–0.15% los ntawm qhov ntim (lossis 2–6 kg/m³ los ntawm qhov hnyav). Kev siv ntau dhau yuav ua rau cov fiber sib sau ua ke thiab ua rau tsis ua haujlwm tau zoo.
Cov Khoom Siv Sib Koom Tes: Cov tshauv ya (6%–15%) lossis silica fume (6%–9%) ntxiv txhim kho cov khoom siv kho tshuab thiab txo qhov poob ntawm permeability.
- Cov Lus Qhia Txog Daim Ntawv Thov
Cov xwm txheej: Zoo tagnrho rau cov neeg taug kev, plazas, thiab thaj chaw txias uas xav tau ob qho tib si permeability thiab lub zog.
Kev Tsim KhoSiv txoj kev sib tov "cement-coated aggregate" kom ntseeg tau tias cov fiber sib xyaw ua ke thiab tsis txhob sib sau ua ke.
Hauv kev xaus, basalt fiber ua kom zoo dua qhov microstructure thiab kev ua haujlwm ntawm cov pob zeb permeable, tab sis kev tswj hwm nruj ntawm cov koob tshuaj thiab cov txheej txheem yog qhov tseem ceeb rau kev sib npaug ntawm lub zog thiab permeability. Kev tshawb fawb yav tom ntej yuav tsum tsom mus rau kev hloov kho qhov chaw ntawm cov fiber thiab ntau yam khoom siv sib koom ua ke kom kov yeej cov kev txwv kev ua tau zoo tam sim no.
