Udaka oluzilinganisayo lunokuxhomekeka kubunzima balo ukwenza isiseko esisicaba, esigudileyo kunye nesiqinileyo kwi-substrate yokubeka okanye ukudibanisa ezinye izinto.Kwangaxeshanye, inokuqhuba ulwakhiwo olukhulu nolusebenzayo.Ngoko ke, i-fluidity ephezulu yinto ebaluleke kakhulu kwi-self-leveling mortar Ukongeza, kufuneka ibe nokugcinwa kwamanzi athile kunye namandla okudibanisa, akukho nto yokwahlula kwamanzi, kwaye ibe neempawu zokushisa ukushisa kunye nokunyuka kweqondo lokushisa eliphantsi.
Ngokubanzi, udaka lokuzilinganisa lufuna ulwelo olulungileyo, kodwa ubumanzi bokwenyani bentlama yesamente budla ngokuba yi-10-12cm kuphela;phakathi kwe-cellulose ethers, i-hydroxypropyl methylcellulose (i-HPMC) iyona nto yongezwayo yodaka oluxutyiweyo, nangona isixa sokongeza siphantsi kakhulu, sinokuphucula kakhulu ukusebenza kodaka, kunokuphucula ukuhambelana, ukusebenza komsebenzi, ukusebenza ngokubambisana kunye namanzi. ukugcinwa kokusebenza kodaka.Idlala indima ebaluleke kakhulu kwintsimi yodaka olulungeleyo.
1. Ukushukuma
I-Hydroxypropyl methylcellulose (HPMC) inempembelelo ebalulekileyo ekugcinweni kwamanzi, ukuhambelana kunye nokusebenza kokwakhiwa kwe-self-leveling mortar.Ngokukodwa njengodaka lokuzilinganisa, ukumanzi sesinye sezibonakaliso eziphambili zokuvavanya ukusebenza kokuzilinganisa.Ngaphantsi kwesiseko sokuqinisekisa ukubunjwa okuqhelekileyo kodaka, i-fluidity ye-mortar inokulungiswa ngokutshintsha inani le-HPMC.Nangona kunjalo, ukuba idosi iphezulu kakhulu, i-fluidity ye-mortar iya kuncitshiswa, ngoko ke idosi ye-HPMC kufuneka ilawulwe ngaphakathi koluhlu olufanelekileyo.
2. Ukugcinwa kwamanzi
Ukugcinwa kwamanzi kwi-mortar yisalathisi esibalulekileyo sokulinganisa ukuzinza kwamacandelo angaphakathi kwi-sand mortar ye-cement.Ukuze ufezekise ngokupheleleyo ukusabela kwe-hydration yezinto zejeli, isixa esifanelekileyo se-HPMC sinokugcina ukufuma kumdaka ixesha elide.Xa sithetha ngokubanzi, izinga lokugcinwa kwamanzi eludaka liyenyuka ngokunyuka komxholo we-HPMC.Umsebenzi wokugcinwa kwamanzi we-HPMC unokuthintela i-substrate ekufunxeni amanzi amaninzi ngokukhawuleza, kwaye ithintele ukuphuphuma kwamanzi, ukuze kuqinisekiswe ukuba indawo ye-slurry ibonelela ngamanzi aneleyo kwi-samente hydration.Ukongeza, i-viscosity ye-hydroxypropyl methylcellulose nayo inefuthe elikhulu ekugcinweni kwamanzi odaka.Ukuphakama kwe-viscosity, ngcono ukugcinwa kwamanzi.Ngokuqhelekileyo, iimveliso ezine-viscosity malunga ne-400mpa.s zisetyenziswa kakhulu kwi-self-leveling mortar, enokuthi iphucule ukusebenza komgangatho wodaka kunye nokwandisa ukuqina kodaka.
3. Ukubeka ixesha
I-HPMC inefuthe elithile lokulibazisa kudaka.Ngokunyuka kwe-dosage, ixesha lokumisela udaka lide.Isiphumo sokubambezeleka kwe-HPMC kwintlama yesamente ixhomekeke ikakhulu kwiqondo lokutshintshwa kwamaqela e-alkyl, kwaye inobudlelwane obuncinci kunye nobunzima bayo bemolekyuli.Incinci idigri ye-alkyl substitution, isikhulu isiqulatho se-hydroxyl, kunye nokucaca ngakumbi isiphumo sokubuyiswa.Kwaye okukhona uphezulu umxholo we-HPMC, kokukhona isiphumo esicacileyo somaleko wefilim entsonkothileyo ekubambezelekeni kwangaphambili kwe-hydration yesamente, ngoko ke isiphumo sokulibazisa sikwabonakala ngakumbi.
4. Amandla e-Flexural kunye namandla oxinzelelo
Ngokuqhelekileyo, amandla yenye yezalathisi ezibalulekileyo zovavanyo lwesiphumo sokuphilisa sesamente esekwe kwimathiriyeli yesamente kumxube.Amandla oxinzelelo kunye namandla okuguquguquka kodaka luya kuncipha ngokunyuka komxholo we-HPMC.
5. Amandla ebhondi
I-HPMC inempembelelo enkulu ekusebenzeni kokudibanisa udaka.I-HPMC yenza ifilimu ye-polymer enefuthe lokutywinwa phakathi kwenkqubo yesigaba se-liquid kunye ne-cement hydration particles, ekhuthaza amanzi amaninzi kwifilimu ye-polymer ngaphandle kweengqungquthela ze-cement, ezihambelana ne-hydration epheleleyo ye-cement, ngaloo ndlela iphucula umgangatho we-slurry.Ukomelela kokuqina kweqhina.Kwangaxeshanye, ukongeza isixa esifanelekileyo se-HPMC siphucula iplastiki kunye nokuguquguquka kodaka, kunciphisa ukuqina kwendawo yokutshintsha phakathi kodaka kunye ne-interface ye-substrate, kwaye kunciphisa isakhono sokutyibilika phakathi kwe-interfaces.Ukuya kumlinganiselo othile, impembelelo yokudibanisa phakathi kodaka kunye ne-substrate iphuculwe.Ukongezelela, ngenxa yobukho be-HPMC kwi-sement paste, indawo ekhethekileyo yokutshintshwa kwendawo kunye ne-interface layer yenziwa phakathi kweengqungquthela zodaka kunye nemveliso ye-hydration.Lomaleko wojongano lwenza indawo yotshintsho yojongano ibe bhetyebhetye kwaye ingaqina kancinci.Ke ngoko, i-Mortar inamandla okuqina okuqina.
Ixesha lokuposa: Mar-23-2023