Non-shrink grouting cov ntaub ntawv yog qhov tseem ceeb hauv kev tsim kho rau qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob Ib qho tseem ceeb hauv cov ntaub ntawv no yog Hydroxypropyl Methylcellulose (HPMC), cellulose ether derivative uas txhim kho cov khoom ntawm grout.
Txhim khu kev tuav dej
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm HPMC hauv cov ntaub ntawv tsis-shrinking yog nws lub peev xwm los txhim kho cov dej tuav tau zoo. HPMC tsim ib zaj duab xis rau saum npoo ntawm cov cement, uas yuav pab txo cov dej evaporation. Cov dej khaws cia no yog qhov tseem ceeb rau cov txheej txheem hydration ntawm cov cement, kom ntseeg tau tias cov dej tiav thiab tsis sib xws. Los ntawm kev tswj cov dej noo, HPMC txo qhov kev pheej hmoo ntawm shrinkage thiab tawg, uas tuaj yeem cuam tshuam qhov ncaj ncees ntawm grout. Ntxiv mus, txhim kho cov dej tuav txuas ntxiv lub sijhawm ua haujlwm ntawm grout, tso cai rau kev siv zoo dua thiab ua tiav.
Txhim kho kev ua haujlwm
HPMC txhim khu kev ua haujlwm ntawm cov ntaub ntawv tsis-shrinking, ua kom yooj yim rau kev sib xyaw, siv, thiab zoo li. Nws cov khoom tshwj xeeb rheological hloov kho cov viscosity ntawm grout, muab kev tswj tau ntau dua thiab sib xyaw ua ke. Qhov no nce viscosity pab nyob rau hauv lub uniform faib ntawm cov cement hais thiab muab tub lim, ua rau ib homogenous thiab du grout. Tsis tas li ntawd, HPMC txo cov kev sib cais thiab los ntshav, xyuas kom meej tias cov grout tuav ib tug zoo sib xws nyob rau hauv nws daim ntawv thov thiab kho cov txheej txheem. Kev txhim kho kev ua haujlwm kuj tseem txo cov kev siv zog ua haujlwm thiab ua kom muaj txiaj ntsig ntawm daim ntawv thov grout.
Nce Adhesion
Cov khoom adhesion ntawm cov ntaub ntawv uas tsis yog-shrink grouting yog txhim khu kev qha los ntawm HPMC. Qhov no yog tshwj xeeb tshaj yog ib qho tseem ceeb nyob rau hauv daim ntawv thov uas cov grout yuav tsum khi rau ntau yam substrates xws li pob zeb, steel, los yog masonry. HPMC txhim kho lub peev xwm ntub dej ntawm cov grout, txhawb kev sib cuag zoo dua nrog cov substrate thiab ua kom muaj zog ntawm daim ntawv cog lus. Enhanced adhesion tiv thaiv kev debonding thiab xyuas kom meej tias cov grout tseem ruaj khov nyob rau hauv qhov chaw, pab txhawb rau tag nrho cov stability thiab durability ntawm kev tsim kho.
Txo Shrinkage thiab Cracking
Shrinkage thiab cracking yog ib qho teeb meem nyob rau hauv ib txwm grouting cov ntaub ntawv, uas tuaj yeem ua rau cov txheej txheem tsis muaj zog thiab ua tsis tiav. HPMC ua lub luag haujlwm tseem ceeb hauv kev txo cov teeb meem no los ntawm kev tswj cov txheej txheem dej thiab tswj cov dej noo. Los ntawm kev tswj cov dej-cement piv thiab txo cov dej poob, HPMC txo qhov kev pheej hmoo ntawm shrinkage thaum lub sij hawm kho. Qhov kev ruaj ntseg no yog qhov tseem ceeb rau kev tswj xyuas qhov kev ncaj ncees ntawm cov grout, kom ntseeg tau tias nws sau cov voids thiab qhov khoob zoo yam tsis muaj deforming lossis shrinking lub sijhawm.
Txhim kho Durability
Kev koom ua ke ntawm HPMC nyob rau hauv cov ntaub ntawv uas tsis yog-shrink grouting txhim khu lawv cov durability los ntawm kev txhim kho kev tiv thaiv ib puag ncig yam xws li kub hloov pauv, noo noo variations, thiab tshuaj lom neeg raug. HPMC tsim ib zaj duab xis tiv thaiv nyob rau hauv lub grout matrix, uas ua raws li ib tug barrier tiv thaiv lwm yam. Cov txheej tiv thaiv no pab tiv thaiv kev nkag mus ntawm cov khoom tsis zoo, txo qhov kev pheej hmoo ntawm corrosion thiab deterioration. Enhanced durability xyuas kom meej tias cov grout tswj nws cov kev ua tau zoo thiab cov qauv kev ncaj ncees nyob rau lub sij hawm ntev, txo cov nqi tu thiab ua kom lub neej ntev ntawm kev tsim kho.
Hydroxypropyl Methylcellulose (HPMC) muaj ntau cov txiaj ntsig hauv cov ntaub ntawv tsis-shrinking, ua rau nws muaj txiaj ntsig zoo ntxiv hauv kev tsim kho niaj hnub no. Nws lub peev xwm los txhim kho cov dej tuav, txhim kho kev ua haujlwm, ua kom adhesion, txo qhov shrinkage, thiab txhim kho durability pab txhawb rau tag nrho cov kev ua tau zoo thiab kev ntseeg siab ntawm grouts. Los ntawm kev hais txog cov teeb meem xws li shrinkage thiab cracking, HPMC xyuas kom meej tias cov ntaub ntawv uas tsis yog shrinking grouting muab lub sij hawm ntev, ruaj khov, thiab cov kev daws teeb meem zoo rau txhaws qhov khoob thiab voids hauv ntau daim ntawv thov kev tsim kho. Raws li kev xav tau kev tsim kho txuas ntxiv mus, lub luag haujlwm ntawm HPMC hauv kev ua kom zoo dua cov ntaub ntawv grouting yuav tseem yog qhov tseem ceeb, txhawb kev txhim kho kev tsim kho kom ruaj khov thiab ruaj khov.
Post lub sij hawm: Lub Xya hli ntuj-12-2024