Silica Fume Rau Concrete Cement
Silica hmoov muaj qhov tshwj xeeb zoo, amorphous SiO2 cov ntsiab lus siab, uas ua rau nws tsim nyog rau kev hloov ib feem ntawm cov khoom siv cementing, me me spherical silica hmoov ntim ntawm cov cement hais, kom cov cementing khoom muaj qhov zoo dua. Tus yuam sij los txhim kho lub zog ntawm pob zeb nrog silica hmoov yog txhawm rau txhim kho kev sib raug zoo ntawm cov cement slurry thiab aggregate. Kev ua haujlwm ntawm silica hmoov yog txhawm rau txo cov dej tso tawm thiab tiv thaiv cov dej condensation ntawm cov dej nyob rau hauv qhov sib sau ua ke, txhawm rau txhim kho qhov ntom ntom ntawm thaj chaw hloov pauv ntawm lub ntsej muag thiab txo qhov tuab ntawm thaj chaw cuam tshuam ntawm kev hloov pauv. Silica hmoov muaj ib tug loj npaum li cas ntawm amorphous silicon thiab ultrafine hmoov, uas reacts nrog Ca (OH) 2 nyob rau hauv thawj theem ntawm cement hydration los ua CSH gel, uas txo cov calcium-silicon ratio hauv pob zeb thiab txhim kho lub zog ntawm pob zeb.
Hauj lwm lawm
Taw qhia
peb cov khoom-Silica Fume
Silica tshauv, tseem hu ua microsilica, yog ib qho khoom siv zoo heev uas yog cov khoom siv los ntawm cov txheej txheem ntawm kev tsim cov silicon thiab ferrosilicon alloys. Nws yog tsim los ntawm spherical hais nrog ib tug nruab nrab txoj kab uas hla ntawm tsawg tshaj li 1 micron, txog 100 lub sij hawm finer tshaj li cement hais. Vim tias nws tuaj yeem txhim kho cov khoom ntawm pob zeb, cov khoom siv tshwj xeeb no tau ua lub luag haujlwm tseem ceeb hauv kev tsim kho kev lag luam underscoring qhov tseem ceeb ntawmSilica Fume rau Concrete Cement.
Cov txiaj ntsig ntawm silica hmoov hauv pob zeb
Tsis tsuas yog silica fume ho txhim khu lub zog compressive ntawm cov pob zeb, tab sis thaum siv los ua ib feem hloov rau cov cement, nws kuj ua rau qhov chaw nruab nrab ntawm cov cement hais, uas ua rau lub denser, denser matrix. Qhov densification no txo cov permeability ntawm cov pob zeb, ua rau nws tsis yooj yim rau infiltration los ntawm dej thiab tshuaj.
Silica fume kuj tseem txhim kho qhov ua tau zoo ntawm cov qauv pob zeb los ntawm kev txo cov permeability, uas ua rau muaj kev cuam tshuam tsis zoo ntawm cov dej noo, cov tshuaj corrosive thiab cov khoom tsis zoo. Yog li ntawd, cov qauv tsim nrog silica fume qhob tuaj yeem pom zoo tiv thaiv corrosion, khov-thaw puas thiab alkali-silicon cov tshuaj tiv thaiv.
Thib peb, silica fume nce qhov hnav tsis kam ntawm cov pob zeb, xws li kev lag luam hauv tsev, Marine cov qauv thiab cov pob zeb ua vaj tse. Cov yam ntxwv no txhim kho cov pob zeb muaj peev xwm tiv taus kev tsheb hnyav, hnav thiab cuam tshuam.
Cov tuab tuab thiab ua kom zoo nkauj ntawm silica fume pob zeb ua rau cov nroj tsuag hnyav, thiab nws yog cov khoom siv pov tseg chaw, thiab muaj cov nroj tsuag.Qhov chaw muaj hluav taws xob thiab cov haujlwm tseem ceeb ntawmSilica Fume rau Concrete Cementhauv kev txhim kho kev ua tau zoo thiab kev ua haujlwm ntev ntawm cov pob zeb ua vaj tse.
Daim ntawv thov teb
Silica fume tuaj yeem siv rau ntau yam kev siv pob zeb, suav nrog qee cov pob zeb ua kom muaj zog, cov pob zeb ua rau nws tus kheej, nrog rau cov phom sij thiab cov khoom ua ntej, txawm hais tias cov lus qhia tshwj xeeb yuav tsum tau ua raws li kev ua haujlwm zoo, xws li kev sib xyaw tsim nyog, kev sib tw kev sib tw. nrog admixtures, thiab txoj kev kho kom raug.
Kev sib koom ua ke ntawm Silica Fume rau Concrete Cement rau hauv cov pob zeb sib tov muaj txiaj ntsig zoo ntawm lub zog, ruaj khov thiab ruaj khov, thiab cov khoom tshwj xeeb ntawm silica fume ua rau lub tsev ruaj khov dua. Los ntawm kev siv silica fume, cov neeg tsim khoom tuaj yeem tau txais cov pob zeb zoo uas yuav ua rau lub sijhawm sim.
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