Udaka oluzilinganisayo lungathembela esisindweni salo ukuze lwakhe isisekelo esiyisicaba, esibushelelezi nesiqinile phezu kwesisekelo sokufaka noma ukubopha ezinye izinto, futhi ngesikhathi esifanayo lungenza ukwakhiwa okukhulu nokusebenza kahle. Ngakho-ke, ukugeleza okuphezulu kuyisici esibaluleke kakhulu sodaka oluzilinganisayo. Ngaphezu kwalokho, kumele lube nokugcinwa kwamanzi kanye namandla okubopha, kungabi nalutho lokuhlukaniswa kwamanzi, futhi lube nezici zokuvimbela ukushisa kanye nokwenyuka kwezinga lokushisa eliphansi.
Ngokuvamile, udaka oluzilinganisa ludinga ukugeleza okuhle, kodwa ukugeleza kwe-paste yangempela yesimende kuvame ukuba yi-10-300px kuphela; i-cellulose ether iyisengezo esiyinhloko sodaka oluxutshwe ngomumo, yize inani lokwengeza liphansi kakhulu, lingathuthukisa kakhulu ukusebenza kwe-Mortar, lingathuthukisa ukuhambisana, ukusebenza kahle, ukusebenza kwe-bonding kanye nokusebenza kokugcina amanzi kodaka. Lidlala indima ebaluleke kakhulu emkhakheni wodaka oluxutshwe ngomumo.
1. Ukugeleza: I-Cellulose ether inethonya elibalulekile ekugcinweni kwamanzi, ukuhambisana kanye nokusebenza kokwakhiwa kwe-mortar yokuzilinganisa. Ikakhulukazi njenge-mortar yokuzilinganisa, ukugeleza kungenye yezinkomba eziyinhloko zokuhlola ukusebenza kwe-self-leveling. Ngaphansi kwesisekelo sokuqinisekisa ukwakheka okuvamile kwe-mortar, ukugeleza kwe-mortar kungalungiswa ngokushintsha inani le-cellulose ether. Kodwa-ke, uma inani liphezulu kakhulu, ukugeleza kwe-mortar kuzoncishiswa, ngakho-ke inani le-cellulose ether HPMC kufanele lilawulwe ngaphakathi kobubanzi obufanele.
2. Ukugcinwa kwamanzi: Ukugcinwa kwamanzi kodaka kuyisibonakaliso esibalulekile sokulinganisa ukuzinza kwezingxenye zangaphakathi zodaka lukasimende olusanda kuhlanganiswa. Ukuze kufezwe ngokugcwele ukusabela kokumanzi kwezinto zejeli, inani elifanele le-cellulose ether lingagcina umswakama kudaka isikhathi eside. Ngokuvamile, izinga lokugcina amanzi kodaka liyanda ngokwanda kokuqukethwe kwe-cellulose ether. Umphumela wokugcina amanzi we-cellulose ether HPMC ungavimbela i-substrate ekumunceni amanzi amaningi ngokushesha, futhi uvimbele ukuhwamuka kwamanzi, ukuze kuqinisekiswe ukuthi indawo yodaka inikeza amanzi anele okwanele ukumunca usimende. Ngaphezu kwalokho, i-viscosity ye-cellulose ether nayo inethonya elikhulu ekugcinweni kwamanzi kodaka. Uma i-viscosity iphakeme, kulapho ukugcinwa kwamanzi kuba ngcono khona. Ngokuvamile, i-cellulose ether HPMC ene-viscosity engu-400mpa.s isetshenziswa kakhulu kudaka oluzilinganisayo, olungathuthukisa ukusebenza kodaka futhi lwandise ukuqina kodaka.
3. Isikhathi Sokusetha: I-Cellulose ether inomphumela othile wokulibazisa ku-mortar. Ngokwanda kokuqukethwe kwe-cellulose ether, isikhathi sokusetha komortar siyanda. Umphumela wokulibazisa we-cellulose ether HPMC ku-cement paste uncike kakhulu ezingeni lokushintsha iqembu le-alkyl, futhi awunabo ubudlelwano obuncane nesisindo sawo sama-molecule. Uma izinga lokushintsha kwe-alkyl lincane, okuqukethwe kwe-hydroxyl kukhulu, futhi umphumela wokulibazisa usobala kakhulu. Futhi lapho okuqukethwe kwe-cellulose ether kuphakeme, kulapho umphumela wokulibazisa wengqimba yefilimu eyinkimbinkimbi ubonakala khona ekufakweni kwe-cement kokuqala, ngakho-ke umphumela wokulibazisa nawo usobala kakhulu.
4. Amandla okugobeka kanye namandla okucindezela: Ngokuvamile, amandla angenye yezinkomba ezibalulekile zokuhlola umphumela wokugobeka kwezinto ezisekelwe kusimende engxubeni. Amandla okucindezela kanye namandla okucindezela kwesimende kuzoncipha ngokwanda kokuqukethwe kwe-cellulose ether HPMC.
5. Amandla okubopha: i-cellulose ether HPMC inethonya elikhulu ekusebenzeni kokubopha kwe-mortar. I-cellulose ether yakha ifilimu ye-polymer enomphumela wokuvala phakathi kwezinhlayiya ze-cement hydration ohlelweni lwesigaba soketshezi, okukhuthaza amanzi amaningi kwifilimu ye-polymer ngaphandle kwezinhlayiya ze-cement, okusiza ekufakweni kwamanzi okuphelele kwe-cement, ngaleyo ndlela kuthuthukiswe amandla okubopha kwe-paste ngemva kokuqina. Ngesikhathi esifanayo, inani elifanele le-cellulose ether lithuthukisa ukuqina kanye nokuguquguquka kwe-mortar, kunciphisa ukuqina kwendawo yokuguquka phakathi kwe-mortar kanye ne-substrate interface, futhi kunciphisa ikhono lokushelela phakathi kwe-interface. Ngezinga elithile, umphumela wokubopha phakathi kwe-mortar kanye ne-substrate uyathuthukiswa. Ngaphezu kwalokho, ngenxa yokuba khona kwe-cellulose ether ku-paste ye-cement, kwakhiwa indawo ekhethekile yokuguquka kwe-interface kanye nesendlalelo se-interface phakathi kwezinhlayiya ze-mortar kanye nomkhiqizo we-hydration. Lolu ngqimba lwe-interface lwenza indawo yokuguquka kwe-interface ibe lula futhi ingaqini, ukuze i-mortar ibe namandla aqinile e-bond.
Isikhathi sokuthunyelwe: Feb-27-2023