Dab tsi yog qhov cuam tshuam ntawm silica fume ntawm cov khoom ntawm grout?
Aug 06, 2024Tso lus
Vim yog qhov me me me me thiab qhov loj ntawm qhov chaw, silica fume muaj lub cev thiab tshuaj lom neeg cov yam ntxwv ntawm siab purity thiab siab pozzolanic kev ua si. Thaum silica fume ntxiv rau hauv cov khoom siv ntxiv raws li cov ntxhia ntxiv, cov dej txo tus neeg sawv cev yuav tsum tau ntxiv los xyuas kom meej qhov ua haujlwm ntawm cov khoom siv ntxiv. Kev siv cov silica fume tuaj yeem ua rau lub ntsws ntau dhau thaum ntxov, uas feem ntau yog 5% -10% ntawm tag nrho qhov hnyav ntawm cov khoom siv gelling, thiab feem ntau yog siv ua ke nrog lwm cov ntxhia ntxiv. Cia peb nkag siab dab tsi yog qhov cuam tshuam ntawm silica fume ntawm kev ua haujlwm ntawm grout?
Nyob rau hauv peb lub teb chaws, vim nws cov zis qis thiab tus nqi siab tam sim no, lub zog ntawm cov khoom siv dav dav yog qis dua 80MPa, tsis txhob xav txog kev ntxiv silica fume. Cov nyhuv ntawm amorphous thiab zoo heev silica fume ntawm qhov kev ua tau zoo ntawm cov khoom siv ntxiv yog feem ntau tshwm sim hauv lub cev thiab tshuaj lom neeg: nws plays lub luag hauj lwm ntawm ultra-fine muab tub lim, plays lub luag hauj lwm ntawm crystal nucleus nyob rau hauv thaum ntxov hydration txheej txheem, thiab muaj pozzolanic siab. kev ua si.
1. Silica fume accelerates lub hydration ntawm cov khoom siv cementing system
Thaum qhov sib npaug ntawm cov cement yog hloov los ntawm silica fume, hydration tshav kub tso tawm ntawm 3d thiab 7d systems tau nce ntau. Kev txhawb nqa cov phiaj xwm grout uas xav tau los tswj cov dej tawm thaum ntxov yuav tsum tau saib xyuas tshwj xeeb rau qhov no thaum xaiv cov khoom.
2. Silica fume txhim kho lub zog ntawm kev siv zog ntxiv
Thaum silica fume yog siv ua ke nrog dej txo tus neeg sawv cev, silica fume reacts nrog hydration khoom los tsim hydrated calcium silicate gel, nyob rau hauv qhov chaw ntawm cov cement hais, txhim kho cov qauv kev sib txuas thiab kev sib txuas, thiab tsim cov qauv ntom ntom. Yog li ntawd, lub zog ntawm cov khoom siv ntxiv dag zog tuaj yeem txhim kho tau zoo. Feem ntau, cov ntsiab lus ntawm hma- tshauv yog 5% -10%, thiab lub zog ultra-siab reinforced grout nrog compressive zog ntawm 100MPa tuaj yeem npaj tau.
3. Silica fume nce ceev
Silica fume hais me me txaus los sau qhov chaw nruab nrab ntawm cov cement hais. Cov khoom ntim ntom ntom tuaj yeem txo cov ntshav, txo cov pores capillary thiab qhov nruab nrab qhov pore loj. Thaum cov ntsiab lus ntawm wollastonite yog 5% -10%, kev sib xyaw ua haujlwm zoo tuaj yeem tau txais, thiab tus neeg saib xyuas dej yuav tsum tau siv los xyuas kom meej qhov tawg ntawm wollastonite thiab cement.
4. Silica fume txhim kho kev sib cais thiab los ntshav kev ua haujlwm ntawm cov khoom siv ntxiv
Tom qab cov khoom siv grouting yog nchuav, dej feem ntau yog sib cais los ntawm cov khoom siv grouting, uas yog, cov yeeb yaj kiab dej yog tsim rau ntawm qhov chaw, tseem hu ua floating slurry, uas ua rau kev faib cov khoom siv grouting rau saum txheej tsis sib xws thiab cuam tshuam rau cov khoom siv grouting. lub tsev zoo. Qhov sib ntxiv ntawm silica fume tuaj yeem txhim kho qhov cohesiveness thiab dej tuav ntawm qhov sib xyaw ua ke ntxiv thaum nws sib xyaw nrog silica fume thiab dej txo tus neeg saib xyuas kom ntseeg tau tias qhov sib tov yuav tsum muaj fluidity.
5. Silica fume txhim kho lub impermeability ntawm reinforced grout
Txawm hais tias tag nrho cov porosity ntawm cov khoom siv ntxiv dag zog sib xyaw nrog cov pob zeb silica fume yog qhov zoo ib yam li yam tsis muaj kev sib xyaw, qhov loj capillary pores raug txo, cov pores ultra-nplua tau nce, lub pore qauv ntawm cov cement pob zeb tau txhim kho, thiab Kev nkag mus thiab corrosion ntawm cov teeb meem ions raug tiv thaiv zoo. Yog li ntawd, lub durability ntawm reinforced grout xws li impermeability thiab tshuaj corrosion kuj yog ho txhim kho, thiab corrosion kuj ntawm reinforcement kuj zoo tuaj.
Cov saum toj no yog tag nrho cov ntsiab lus ntawm qhov cuam tshuam ntawm silica fume ntawm kev ua haujlwm ntawm grout, Kuv vam tias nws tuaj yeem pab tau rau koj. Peb lub tuam txhab Anyang Jiashike Hlau Co., Ltd. koom nrog kev tshawb fawb thiab kev tsim kho, kev muag khoom, kev txhawb nqa ntawm silica fume khoom rau ntau xyoo, kev nplua nuj ntau lawm, zoo heev, kom ua tau raws li cov neeg siv khoom xav tau, txais tos cov phooj ywg xav tau hu rau cov ntsiab lus.
