Cov nyhuv ntawm Basalt Fiber rau Kev Ua Haujlwm ntawm Permeable Concrete

Basalt fiber ntauRaws li ib qho tshiab inorganic, kev ua haujlwm siab, thiab cov khoom siv hauv eco-phooj ywg, ua kom cov khoom siv dag zog, ua haujlwm ntev, thiab ua haujlwm ntawm cov pob zeb permeable. Hauv qab no yog ib qho kev ntsuam xyuas ntau yam ntawm nws cov kev cuam tshuam thiab kev ua kom zoo dua:

1. Kev cuam tshuam rau Mechanical Properties

Txhim kho Compressive thiab Flexural Strength

   Basalt fiber ntau qhov cuab lub zog zoo txhim khu lub compressive thiab flexural zog ntawm permeable qhob. Cov kev tshawb fawb qhia tau hais tias fibers tsim ib tug peb-dimensional network qauv, ntxiv dag zog rau kev sib txuas ntawm aggregates thiab cement paste thaum inhibiting tawg propagation. Piv txwv li:

Compressive Strength: Nrog 12 hli thiab 24 hli fibers, compressive zog pib nce thiab tom qab ntawd txo nrog cov ntsiab lus fiber ntau dua. Qhov kev pom zoo yog 0.1% - 0.15% (los ntawm ntim), nrog 24 hli fibers ua tiav lub siab tshaj plaws compressive zog ntawm 24.3 MPa (ntawm 0.1% ntau npaum).

Flexural Strength: Fiber ntev muaj qhov cuam tshuam ntau dua ntawm lub zog flexural. Piv txwv li, 18 hli fibers nce flexural zog los ntawm 66.44% piv rau cov pob zeb dawb vim muaj kev sib txuas ntawm kev sib txuas los ntawm kev sib txuas ntawm fiber ntau.

Txhim kho Toughness thiab Ductility

Qhov "bridging effect" ntawm Basalt Fiber ntaus txhim kho toughness, hloov tsis ua hauj lwm hom los ntawm brittle mus rau ductile. Microscopic tsom xam qhia tias fibers stabilize lub cev pob txha qauv nyob rau hauv cov cement matrix, zoo thaiv kev loj hlob tawg.

Kev cuam tshuam rau permeability

Txo Permeability Coefficient

Fiber incorporation ib nrab blocks pores, txo permeability. Piv txwv li, nce cov ntsiab lus 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 (xws li permeability> 1 mm / s ntawm 20% porosity).

Sib npaug Porosity thiab Fiber Parameters

Ntev fibers (piv txwv li, 12 mm → 24 mm) me ntsis nce porosity tab sis tseem txo permeability.

Kev sib xyaw fibers nrog cov ntxhia hauv cov khoom sib xyaw (xws li, ya tshauv) optimizes pore qauv, txo qis permeability poob thaum tuav lub zog.

3. Txhim kho Frost Resistance

Basalt fibers txhim khu kev ruaj ntseg nyob rau hauv cov qauv, ho boosting Frost tsis kam:

Tom qab 100 lub voj voog khov-thaw, cov qauv siv fiber ntau pom qhov poob qis li 0.9% thiab khaws 62.5% txheeb ze elastic modulus.

Synergy nrog yoov tshauv (piv txwv li, 6% ya tshauv + 6 kg / m³ fibers) ua kom pom kev tiv thaiv te, raws li ya tshauv refines pore qauv thaum fibers suppress khov-thaw cracking.

4. Key Optimization Parameters

Fiber Length: 24 hli fibers raug pom zoo rau kev ntsuas lub zog thiab permeability, txawm tias 18 hli fibers ua tau zoo hauv lub zog flexural.

Ntau npaum li cas: 0.1% -0.15% los ntawm ntim (los yog 2-6 kg / m³ los ntawm qhov hnyav). Kev noj ntau dhau yuav ua rau muaj fiber ntau agglomeration thiab txo kev ua haujlwm.

Synergistic Materials: ya tshauv (6%–15%) lossis silica fume (6%–9%) ntxiv txhim kho cov khoom siv kho tshuab thiab txo qis permeability.

5. Cov lus pom zoo rau kev thov

Scenarios: Zoo tagnrho rau cov neeg taug kev taug kev, plazas, thiab cov cheeb tsam txias uas xav tau ob qho tib si permeability thiab lub zog.

Kev tsim kho: Siv cov txheej txheem "cement-coated aggregate" los xyuas kom meej cov fiber ntau dispersion thiab tsis txhob clumping.

Nyob rau hauv cov ntsiab lus, basalt fiber optimizes microstructure thiab mechanical kev ua tau zoo ntawm permeable qhob, tab sis nruj tswj ntawm ntau npaum thiab cov txheej txheem tsis yog ib qho tseem ceeb kom sib npaug zog thiab permeability. Kev tshawb fawb yav tom ntej yuav tsum tsom mus rau kev hloov kho fiber ntau thiab ntau cov khoom sib koom ua ke kom kov yeej cov kev txwv tam sim no.