Hydroxypropyl Methylcellulose (HPMC) yog non-ionic cellulose ether siv dav hauv cov khoom siv hauv tsev. Tshwj xeeb tshaj yog ntawm cov ntaub ntawv tsis shrinkage grouting, qhov zoo ntawm HPMC yog qhov tseem ceeb.
1. Txhim kho kev tsim kho kev ua haujlwm
HPMC muaj cov dej tuav tau zoo, uas tso cai rau cov khoom siv uas tsis yog shrinkage los tswj kev ua haujlwm zoo thiab ua haujlwm tau zoo thaum lub sijhawm tsim kho. Kev tuav dej ntawm HPMC ua kom cov dej sib npaug hauv cov slurry, tiv thaiv cov dej los ntawm evaporating sai heev, yog li tiv thaiv qhov saum npoo ntawm slurry los ntawm ziab thiab tawg, thiab txhim kho kev ua tau zoo thiab kev tsim kho.
2. Txhim khu kev ua kua
HPMC tuaj yeem txhim kho fluidity ntawm cov ntaub ntawv tsis-shrinkage. Tom qab HPMC molecules yaj nyob rau hauv dej, lawv yuav tsim ib tug high-viscosity colloidal tov, ua rau lub viscosity ntawm slurry, ua rau lub slurry ntws ntau tusyees thiab stably, thiab tsis txhob sib cais thiab los ntshav. Qhov no yog qhov tseem ceeb heev rau kev nchuav thiab txhaws ntawm slurry thaum lub sij hawm tsim kho, kom ntseeg tau tias cov khoom sib xws thiab cov khoom zoo.
3. Txhim kho adhesion
HPMC muaj adhesion zoo, tso cai rau cov khoom uas tsis yog-shrink grouting kom zoo dua adhering rau substrate nto. Qhov kev sib txuas ua ke zoo no tuaj yeem txhim kho qhov adhesion ntawm cov ntaub ntawv thiab txo qhov kev pheej hmoo ntawm cov khoom poob los yog tawg tom qab kev tsim kho, yog li txuas ntxiv lub neej kev pab cuam ntawm lub tsev.
4. Txhim khu kev ua haujlwm tawg
Vim yog cov dej tuav thiab kev sib txuas ntawm HPMC, nws tuaj yeem txhim kho qhov tawg ntawm cov ntaub ntawv uas tsis yog shrinkage grouting. Thaum lub sij hawm hardening txheej txheem, HPMC tuaj yeem tswj cov cement hydration cov tshuaj tiv thaiv ceev, txo cov cement hydration tshav kub, tiv thaiv cov ntim hloov los ntawm qhov kub thiab txias, thiab txo qhov kev ntxhov siab, yog li txo qhov tshwm sim ntawm cov kab nrib pleb.
5. Ua kom zoo rau cov khoom siv kho tshuab
HPMC tuaj yeem txhim kho cov khoom siv kho tshuab ntawm cov ntaub ntawv tsis-shrinkage grouting. Qhov sib ntxiv ntawm HPMC tuaj yeem txhim kho lub zog compressive thiab flexural lub zog ntawm cov khoom, ua rau cov ntaub ntawv zoo dua durability thiab stability thaum siv. Qhov no yog ib qho tseem ceeb tshwj xeeb tshaj yog rau cov vaj tse uas yuav tsum tau tiv thaiv cov khoom loj dua thiab cov kev ntxhov siab nyuaj.
6. Txhim kho qhov ntev
Daim ntawv thov ntawm HPMC tuaj yeem txhim kho kev ua haujlwm ntev ntawm cov ntaub ntawv tsis-shrinkage. HPMC tuaj yeem tiv thaiv cov dej nrawm nrawm thiab txo qhov tsim ntawm cov kab nrib pleb thaum lub sij hawm hydration ntawm cov cement, yog li ncua kev laus ntawm cov khoom. Tsis tas li ntawd, HPMC tuaj yeem txhim kho cov khoom siv khov-thaw tsis kam thiab tshuaj lom neeg corrosion, cia cov khoom siv kom muaj kev ua tau zoo hauv qhov chaw hnyav.
7. Txhim kho kev tsim kho kev nyab xeeb
Kev siv HPMC tuaj yeem txhim kho kev nyab xeeb kev tsim kho. Vim tias HPMC muaj cov dej tuav tau zoo thiab adhesion, nws tuaj yeem tiv thaiv qhov chaw ntawm cov slurry los ntawm kev ziab kom qhuav vim cov dej evaporation sai thaum lub sij hawm tsim kho, yog li txo qhov kev ua haujlwm ntau ntxiv thiab kev nyab xeeb ntawm cov neeg ua haujlwm tsim kho vim kev kho tawg. Nyob rau tib lub sijhawm, kev txav mus los zoo ntawm HPMC kuj tseem ua rau cov txheej txheem kev tsim kho yooj yim dua thiab ua haujlwm tau zoo, txo qhov tsis paub tseeb hauv kev tsim kho thiab txhim kho kev tsim kho kev nyab xeeb.
8. Kev ua haujlwm ib puag ncig
HPMC yog cov khoom tsis muaj tshuaj lom, tsis muaj mob thiab biodegradable uas ua tau raws li kev tiv thaiv ib puag ncig ntawm cov khoom siv niaj hnub no. Nws daim ntawv thov nyob rau hauv cov ntaub ntawv uas tsis yog-shrink grouting tsis tsuas yog txhim kho cov kev ua tau zoo ntawm cov khoom, tab sis kuj txo cov kev tsis zoo ntawm ib puag ncig, nyob rau hauv txoj kab nrog lub tswv yim ntawm sustainable kev loj hlob.
Kev thov ntawm HPMC hauv cov ntaub ntawv uas tsis yog shrinkage grouting muaj ntau yam zoo. Nws tuaj yeem tsis tsuas yog txhim kho cov khoom siv kev ua tau zoo, fluidity thiab adhesion, tab sis kuj txhim kho cov khoom tawg, cov khoom siv kho mob thiab kav ntev, thiab muaj kev ua haujlwm zoo ib puag ncig. Cov txiaj ntsig zoo no ua rau HPMC yog ib qho tseem ceeb thiab tseem ceeb ntawm cov ntaub ntawv uas tsis yog shrinkage grouting, txhawb kev txhim kho thiab kev vam meej ntawm cov khoom siv hauv tsev. Nyob rau yav tom ntej kev tshawb fawb thiab kev tsim kho thiab kev siv cov khoom siv hauv tsev, HPMC yuav txuas ntxiv mus ua nws lub luag haujlwm tseem ceeb thiab coj cov kev tsim kho tshiab thiab kev ua tiav ntxiv rau kev tsim kho kev lag luam.
Post lub sij hawm: Lub Xya hli ntuj-19-2024