Vim li cas thiaj yuav tsum tau ntxiv silica fume rau pob zeb?
Aug 14, 2024
Tso lus
1, Txhim kho cov twj tso kua mis
Silica fume yog siv los tsim cov pob zeb muaj zog (saum C70), uas txhim kho lub zog thiab twj tso kua mis ntawm cov pob zeb.
2. Tsim cov pob zeb ua haujlwm siab impermeability
Tsim kom muaj impermeable heev (Ntau dua los yog sib npaug rau P30), cov txheej txheem ntawm tus kheej-waterproof pob zeb rau subways, tunnels, thiab hauv qab daus ntawm cov tsev siab.
3, Txhim kho qhov hnav tsis kam ntawm pob zeb
Lub silica fume muaj qhov tsim nyog particle loj faib, muaj zog ntom ntom, siab hardness thiab zoo hnav tsis kam, uas tuaj yeem txhim kho tensile, compressive, cuam tshuam lub zog thiab hnav tsis kam ntawm cov khoom kho, thiab kev cuam tshuam tuaj yeem nce los ntawm {{0} } 5-2.5 zaug.
4. Hloov qhov nplaum
Lub silica fume tuaj yeem ua rau kom cov thermal conductivity, hloov cov khoom nplaum thiab ua kom cov nplaim hluav taws kub.
5. Tiv thaiv kev tawg
Nws tuaj yeem txo qis exothermic ncov kub ntawm epoxy resin curing cov tshuaj tiv thaiv, txo cov linear expansion coefficient ntawm cov khoom kho thiab shrinkage tus nqi ntawm cov khoom kho, thiaj li tshem tawm cov kev ntxhov siab sab hauv thiab tiv thaiv kev tawg.
6. Txo thiab tshem tawm nag lossis daus
Vim yog qhov loj me me thiab tsim nyog faib ntawm silica fume, nws tuaj yeem txo thiab tshem tawm nag lossis daus thiab stratification.
7, Kev rwb thaiv tsev zoo
Cov silica fume yog ntshiab, cov ntsiab lus impurity tsawg, lub cev thiab tshuaj lom neeg muaj zog, yog li ntawd cov khoom kho tau zoo rwb thaiv tsev thiab arc kuj.
8. Ua neej ntev
Kev tsim khoom ntawm Marine thiab tshuaj pob zeb, vim nws cov khoom muaj zog, tiv thaiv kev nkag mus thiab yaig ntawm sulfate thiab chloride ions ntawm pob zeb, thiab zam kev xeb ntawm pob zeb, yog li txuas lub neej ntawm pob zeb.
9, Txhim kho lub peev xwm tiv thaiv cavitation
Cov tshuaj lom neeg muaj pes tsawg leeg ntawm silica fume yog silicon dioxide (SiO2), uas yog cov khoom siv tsis muaj zog, thiab feem ntau cov kua qaub thiab cov hauv paus tsis hnov mob chemical, silica fume yog sib npaug faib thiab npog rau ntawm qhov chaw ntawm cov khoom, muaj zog corrosion kuj, thiab cov tshuaj lom neeg muaj pes tsawg leeg ntawm silica fume. muaj peev xwm tiv thaiv cavitation yaig yog nce los ntawm 3-16 zaug.
10. Txo cov nqi
Lub ntim ntim ntawm silica fume yog me me: ib qho yog nyob nruab nrab ntawm 0.2-0.8, thiab lwm qhov yog nruab nrab ntawm 1.0-2.2. Raws li cov khoom siv polymer filling, tsawg dua li lwm cov ntxhia filling, me me loading hnyav, txuag tus nqi ntawm polymer, yog li nws tuaj yeem txo cov nqi ntawm cov khoom.
11. Kev ua haujlwm khov kho ntawm silica fume
Tom qab 300-500 lub voj voog khov sai, cov txheeb ze elastic modulus nce yog 10-20% qis dua li cov pob zeb zoo tib yam tom qab 25-50 cycles, thiab cov txheeb ze elastic modulus nce yog 30-73%. Yog li ntawd, Frost tsis kam ntawm pob zeb tuaj yeem txhim kho.
12, silica fume thaum ntxov zog
Lub sij hawm induction ntawm silica fume qhob yog luv luv thiab nws muaj cov yam ntxwv ntawm lub zog thaum ntxov. Cov no yog tag nrho cov yam ntxwv zoo.
13. Muaj zog ua haujlwm ntawm silica fume
Nws muaj cov dej txo kev ua tau zoo thiab tsim nyog rau kev sib xyaw ua ke ntawm lub zog thaum ntxov thiab muaj zog ua vaj tse uas xav tau rau kev tsim kho sai. Lub admixture ntawm siab zog shotcrete siv rau kev txhawb nqa kev tsim kho ntawm qhov, subway thiab loj lub hauv paus pit qauv. Admixtures ntawm pob zeb siv nyob rau hauv underwater tsim tej yaam num (xws li piers, DAMS, drilling platforms, thiab lwm yam).
