Cellulose ethers feem ntau yog siv cov khoom siv ntxiv hauv cov khoom siv cement los txhim kho lawv cov khoom siv dag zog thiab lub cev.Ib qho txiaj ntsig tseem ceeb ntawm cov tshuaj ntxiv no yog nws cov txiaj ntsig huab cua, uas ua rau cov ntaub ntawv cement-raws li tiv taus cov dej khov thiab lwm yam kev cuam tshuam ib puag ncig.Kab lus no yuav tham txog huab cua-entraining nyhuv ntawm cellulose ethers ntawm cov khoom siv cement-based tshiab thiab qhia txog lawv qhov kev cuam tshuam zoo rau kev tsim kho.
Cellulose ethers yog dej-soluble polymers muab los ntawm cellulose.Nws yog dav siv nyob rau hauv kev tsim kho kev lag luam raws li ib tug thickener, dispersant thiab stabilizer rau ntau yam cement-based cov ntaub ntawv xws li mortar, grout thiab pob zeb.Nyob rau hauv xyoo tas los no, huab cua-entraining nyhuv ntawm cellulose ethers tau nrov zuj zus vim nws muaj peev xwm los txhim kho cov kav ntev thiab ua haujlwm ntawm cov khoom siv cement-based tshiab.
Aeration yog txheej txheem ntawm kev sib tov me me npuas npuas rau hauv cov cement paste lossis mortar thaum lub sijhawm sib tov.Lub hom phiaj tseem ceeb ntawm kev nkag mus rau huab cua yog txhawm rau ua kom lub zog ntawm cov khoom siv cement.Thaum cov dej hauv pob zeb los yog grout khov, nws tuaj yeem nthuav dav, ua rau cov khoom tawg lossis tawg tawm.Entrained cua npuas ua raws li lub siab nyem valve, muab qhov chaw rau cov dej kom nthuav dav, tiv thaiv cov khoom los ntawm kev tawg lossis tev tawm.
Cellulose ethers yog cov cua nkag mus rau hauv cov ntaub ntawv cement-based rau ntau yam.Thawj qhov laj thawj yog nws lub peev xwm los tsim ua npuas dej ruaj khov.Thaum sib xyaw nrog dej, cellulose ethers tsim cov foams ruaj khov uas yooj yim muab tso rau hauv grout.Cov npuas dej tsis tshua muaj kev tawg thaum sib tov thiab muab qhov ruaj khov matrix ntawm huab cua npuas.Qhov thib ob yog vim li cas nws muaj peev xwm ua kom cov dej tuav tau ntawm cov grout.Qhov no nyob rau hauv lem muab cov dej ntau ntxiv rau hauv lub qhov hws, yog li ua kom tag nrho cov pore ntsiab lus ntawm cov khoom.
Cov huab cua-entraining nyhuv ntawm cellulose ethers ntawm cov ntaub ntawv cement-based tshiab muaj ntau yam txiaj ntsig rau kev tsim kho.Ua ntej, nws txhim kho kev ua haujlwm ntawm cov khoom siv cement-based tshiab.Cov huab cua npuas ua raws li cov roj nplua nyeem, txo kev sib txhuam ntawm cov khoom, tso cai rau cov khoom sib tov kom yooj yim dua thiab tshem tawm qhov xav tau ntawm cov dej ntau dhau, uas yuav ua rau cov khoom ntawm cov khoom kawg.
Nws txhim kho cov kav ntev ntawm cov khoom siv cement.Entrained cua npuas muab ib qho kev sib txuas sab hauv ntawm cov voids uas haum rau qhov nthuav dav ntawm cov dej khov thaum huab cua khov, tiv thaiv cov khoom los ntawm kev tawg lossis tev tawm.Tsis tas li ntawd, huab cua-entraining nyhuv ntawm cellulose ether ua rau cov khoom tiv thaiv ntau dua rau khov thiab thaw cycles, ncua nws lub neej muaj txiaj ntsig thiab txo cov nqi kho.
Nws txhim kho cov cohesion thiab adhesion ntawm cov khoom siv cement.Entrained huab cua npuas ua rau cov khoom siv thaj chaw saum npoo av, tso cai rau nws kom ruaj khov rau cov ntaub ntawv uas nyob ib sab thiab txhim kho tag nrho cov qauv kev ncaj ncees.
Cellulose ethers yog cov khoom muaj txiaj ntsig zoo hauv cov khoom siv cement tshiab vim lawv cov huab cua nkag mus.Entrained cua npuas txhim kho cov txheej txheem thiab ua haujlwm ntev ntawm cov khoom, txo qhov kev pheej hmoo ntawm kev tawg thiab tawg, thiab txhim kho cov cohesion thiab adhesion ntawm cov khoom.Txawm hais tias tsim txoj kev, txuas hniav, vaj tse lossis lwm yam kev tsim kho vaj tse, cellulose ethers tau dhau los ua cov khoom tseem ceeb hauv kev xa cov qauv zoo, kav ntev.Yog li ntawd, nws yog ib qho tsim nyog yuav tsum paub txog qhov cuam tshuam zoo ntawm cov khoom siv ntxiv no hauv kev tsim kho kev lag luam thiab txuas ntxiv tshawb nrhiav nws cov peev txheej siv.
Post lub sij hawm: Sep-01-2023