HPMC Hydroxypropyl Methylcellulose, ua lub luag haujlwm tseem ceeb hauv cov ntaub ntawv tsis-shrinking vim nws cov khoom siv ntau yam thiab kev ua haujlwm. Non-shrink grouting cov ntaub ntawv feem ntau yog siv nyob rau hauv kev tsim kho tej yaam num los sau qhov khoob, voids, thiab interstices, muab cov qauv kev ruaj ntseg thiab tiv thaiv cov ingress ntawm dej thiab lwm yam teeb meem.
Kev tuav dej: HPMC ua tus neeg saib xyuas dej hauv cov ntaub ntawv uas tsis yog shrinking. Nws qhov xwm txheej hydrophilic tso cai rau nws nqus thiab khaws cov dej, kom ntseeg tau tias muaj dej txaus ntawm cov cementitious Cheebtsam. Cov cuab yeej no yog qhov tseem ceeb rau kev tswj xyuas qhov ua haujlwm tau zoo thiab sib xws ntawm cov sib tov sib xyaw rau lub sijhawm ntev, txawm tias nyob hauv qhov kub lossis qhuav. Los ntawm kev tiv thaiv kev poob dej sai, HPMC yuav pab txo qis qhov kev pheej hmoo ntawm shrinkage thiab cracking nyob rau hauv kho grout.
Txhim kho kev ua haujlwm: HPMC txhim kho kev ua haujlwm thiab kev sib koom ua ke ntawm cov ntaub ntawv tsis-shrinking. Thaum sib tov nrog dej thiab lwm yam khoom, nws tsim ib tug viscous tov uas imparts lubricity thiab pab txhawb cov ndlwg ntawm lub grout. Qhov kev txhim kho kev ua haujlwm no ua kom yooj yim tso thiab sib sau ua ke ntawm cov grout nyob rau hauv qhov chaw kaw, kom ntseeg tau tias muaj kev tiv thaiv zoo thiab kev sib txuas nrog cov chaw nyob ib sab. Raws li qhov tshwm sim, cov txheej txheem grouting ua tau zoo dua thiab tsis tshua muaj kev tsim los yog cais tawm.
Tswj Lub Sijhawm Teeb Meem: HPMC pab tswj lub sijhawm teem sijhawm ntawm cov ntaub ntawv tsis-shrinking. Los ntawm retarding cov tshuaj tiv thaiv hydration ntawm cov cement, nws ncua sij hawm ua hauj lwm ntawm cov grout, tso cai rau lub sij hawm txaus rau kev tso kawm, sib sau ua ke, thiab ua tiav cov haujlwm. Qhov kev tswj hwm tus cwj pwm no yog qhov zoo tshwj xeeb rau cov phiaj xwm loj lossis cov ntawv thov uas qhov kev ncua sij hawm yog qhov xav tau kom haum rau cov geometries nyuaj lossis cov kev txwv logistical. Tsis tas li ntawd, nws yuav pab tiv thaiv kom tsis txhob ntxov ntxov nruj ntawm grout, uas tuaj yeem cuam tshuam nws cov dej ntws thiab cov yam ntxwv ntawm qhov chaw.
Txhim kho Adhesion thiab Cohesion: HPMC pab txhawb rau cov nplaum thiab cohesive zog ntawm cov ntaub ntawv uas tsis yog-shrink grouting. Raws li cov tshuaj kho mob, HPMC tsim ib lub network ntawm cov ntawv cog lus sib txuas hauv cov matrix, muab kev sib koom ua ke thiab kev ncaj ncees rau cov qauv tawv. Tsis tas li ntawd, nws cov khoom ua haujlwm saum npoo av txhawb kev sib txuas ntawm cov grout thiab substrate nto, ua kom muaj kev sib raug zoo thiab kev ua haujlwm ntev. Qhov no txhim kho adhesion thiab cohesion yog qhov tseem ceeb rau kev ua tiav kev hloov pauv ntawm kev thauj khoom, kev ruaj ntseg, thiab kev tiv thaiv rau cov neeg kho tshuab kev ntxhov siab lossis ib puag ncig.
Txo kev sib cais thiab los ntshav: HPMC pab txo qis kev sib cais thiab los ntshav hauv cov ntaub ntawv uas tsis yog shrinking. Nws cov khoom rheological cuam tshuam cov viscosity thiab thixotropy ntawm cov grout, tiv thaiv kev sib haum xeeb ntawm cov khoom siv los yog kev sib cais ntawm cov dej los ntawm kev sib tov thaum tuav, twj, lossis tso. Los ntawm kev tswj hwm qhov sib xws thiab sib xws hauv cov khoom hnyav, HPMC ua kom muaj kev ua tau zoo thiab cov khoom siv thoob plaws hauv cov qauv, yog li txo qhov kev pheej hmoo ntawm qhov tsis xws luag lossis kev ua haujlwm tsis zoo.
Txhim kho Durability thiab Kev Ua Haujlwm Zoo: Zuag qhia tag nrho, kev koom ua ke ntawm HPMC txhim khu kev ruaj ntseg thiab kev ua haujlwm ntawm cov ntaub ntawv tsis-shrinking. Nws lub peev xwm khaws dej, txhim kho kev ua haujlwm, tswj kev teeb tsa, nplaum lub zog, thiab kev tiv thaiv rau kev sib cais ua ke ua rau muaj txiaj ntsig zoo thiab ua haujlwm ntev ntawm cov grout. Los ntawm kev txo qis qis, tawg, thiab lwm yam kev cuam tshuam, HPMC pab khaws cov qauv kev ncaj ncees thiab kev ntseeg tau ntawm cov rooj sib txoos grouted, ua kom muaj kev ua raws li cov qauv kev cai thiab cov qauv kev tsim vaj tsev.
HPMC ua lub luag haujlwm ntau yam hauv cov ntaub ntawv uas tsis yog shrinking, ua rau muaj kev cuam tshuam tseem ceeb ntawm lawv cov khoom, kev ua tau zoo, thiab kev thov kom haum. Los ntawm nws cov dej khaws cia, kev ua haujlwm-txhim kho, teeb tsa-tswj, nplaum-cohesive, tiv thaiv kev sib cais, thiab cov yam ntxwv ua kom zoo dua qub, HPMC pab txhawb rau kev ua tau zoo, kev ntseeg siab, thiab kev ua neej ntev ntawm cov kev daws teeb meem hauv ntau qhov kev tsim kho. Yog li ntawd, nws cov kev xaiv ceev faj, kev tsim, thiab kev sib koom ua ke yog qhov tseem ceeb rau kev ua kom zoo dua qhov kev ua tau zoo thiab qhov zoo ntawm cov ntawv thov tsis-shrink grouting.
Post lub sij hawm: May-15-2024