1. Ukugcinwa kwamanzi
Ukugcinwa kwamanzi kudaka lokutyabeka kubalulekile.IHydroxypropyl Methylcellulose (HPMC)inomthamo owomeleleyo wokugcina amanzi. Emva kokongeza i-HPMC kudaka lokutyabeka, lunokwenza isiseko sothungelwano olugcina amanzi ngaphakathi kodaka ukuthintela amanzi ukuba afunxeke okanye akhutshwe ngumphunga ngokukhawuleza ngesiseko. Ngokomzekelo, xa utyabeka kwezinye iziseko ezomileyo, ukuba akukho milinganiselo yokugcinwa kwamanzi efanelekileyo, amanzi omdaka aya kuxutywa ngokukhawuleza ngesiseko, okubangela ukungonelanga kwe-samente. Ubukho be-HPMC bufana ne “micro-reservoir”. Ngokwezifundo ezifanelekileyo, ukutyabeka udaka olunexabiso elifanelekileyo le-HPMC kunokugcina ukufuma kangangeeyure ezininzi okanye kwaneentsuku ezinde kunoko ngaphandle kwe-HPMC phantsi kokusingqongileyo okufanayo. Oku kunika isamente ixesha elaneleyo lokujongana ne-hydration reaction, ngaloo ndlela iphucula amandla kunye nokuqina kodaka lokutyabeka.
Ukugcinwa kwamanzi ngokufanelekileyo kunokuphucula ukusebenza kodaka lokutyabeka. Ukuba udaka lulahlekelwa ngamanzi ngokukhawuleza, luya kuba lome kwaye lube nzima ukusebenza, ngelixa i-HPMC inokugcina iplastiki yodaka, ukuze abasebenzi bokwakha babe nexesha elaneleyo lokulinganisa kunye nokugudisa udaka lwe-plaster.
2. Ukuncamathela
I-HPMC inokwandisa kakhulu ukunamathela phakathi kodaka lwe-plaster kunye nesiseko. Ineempawu ezintle zokudibanisa, ezinokuthi zenze udaka lunamathele ngakumbi kwisiseko esifana neendonga kunye nekhonkrithi. Kwizicelo eziphathekayo, oku kunceda ukuthintela ukugrunjwa kunye nokuwa kodaka lwe-plaster. Xa iimolekyuli ze-HPMC zisebenzisana nomphezulu wesiseko kunye namasuntswana ngaphakathi kodaka, inethiwekhi yokudibanisa yenziwa. Umzekelo, xa utyabeka ezinye iindawo ezigudileyo zekhonkrithi, udaka lwe-plaster kunye ne-HPMC ludityanisiwe lunokuthi luqiniswe ngokuqinileyo kumphezulu, luphucule uzinzo lwesakhiwo sonke sokutyabeka, kunye nokuqinisekisa umgangatho weprojekthi yokutyabeka.
Kwiziseko zemathiriyeli ezahlukeneyo, i-HPMC inokudlala indima elungileyo yokuphucula ikhonkco. Ingaba i-masonry, iplanga okanye isiseko sesinyithi, nje kuphela kwindawo apho kufuneka udaka lwe-plaster, i-HPMC inokuphucula ukusebenza kokubambisana.
3. Ukusebenza
Ukuphucula ukusebenza. Ukongezwa kwe-HPMC kwenza ukuba udaka lokutyabeka lusebenze ngakumbi, kwaye udaka luba lula kwaye lube lula, olulungele ukusebenza kolwakhiwo. Abasebenzi bokwakha banokusasaza kwaye bakhuhle udaka ngokulula xa belusebenzisa, ukunciphisa ubunzima kunye nomsebenzi wokwakha. Oku kubaluleke kakhulu kwiiprojekthi ezinkulu zokutyabeka, ezinokuphucula ukusebenza kakuhle kunye nomgangatho wokwakha.
Ukuchasana nokudodobala. Xa utyabeka kwiindawo ezithe nkqo okanye ezithambekileyo, udaka lwe-plastering luthambekele ekudakaleni, oko kukuthi, i-mortar ihamba phantsi phantsi kwesenzo sobunzima. I-HPMC inokunyusa i-viscosity kunye nokuhambelana kodaka kwaye ixhathise ngokufanelekileyo ukudilika. Ivumela udaka ukuba luhlale kwindawo esetyenzisiweyo ngaphandle kokutyibilika okanye ukuqukuqela kunye nokonakala, ukuqinisekisa ukuba mcaba kunye nobuhle bokutyatyekwa. Umzekelo, ekwakhiweni kokutyatyekwa kweendonga zangaphandle zezakhiwo, udaka lokutyabeka kunye ne-HPMC eyongeziweyo inokulungelelaniswa kakuhle neemfuno zokwakhiwa kweendonga ezithe nkqo, kwaye umphumo wokwakha awuyi kuchaphazeleka ngokunyuka.
4. Amandla kunye nokuqina
Ukusukela okoHPMCiqinisekisa i-hydration epheleleyo yesamente, amandla omdaka wokutyabeka aphuculwe. Okukhona iqondo eliphezulu lesamente yokugalela amanzi, kokukhona kuvela iimveliso zokugalela amanzi. Ezi mveliso ze-hydration zidibeneyo ukwenza isakhiwo esiqinileyo, ngaloo ndlela siphucula izikhombisi zamandla zodaka, ezifana nokunyanzeliswa kunye namandla okuguquguquka. Ekuhambeni kwexesha, oku kunceda ekuphuculeni ukuqina kodaka lokutyabeka.
Ngokumalunga nokuqina, i-HPMC inokudlala indima ethile ekuxhathiseni ukuqhekeka. Inciphisa ukwenzeka kokumisa ukuqhekeka kwe-shrinkage okubangelwa ukufuma okungalinganiyo ngokugcina ukusabalalisa okufanayo komswakama kwi-mortar. Ngelo xesha, umphumo wokugcinwa kwamanzi we-HPMC wenza ukuba udaka luxhathise ukukhukuliseka kwezinto ezisingqongileyo zangaphandle ngexesha lokusetyenziswa kwexesha elide, njengokuthintela ukungena ngokugqithisileyo kokufuma, ukunciphisa umonakalo kwisakhiwo sodaka obangelwa yimijikelo yokuqhaqhazela, njl., ngaloo ndlela ukwandisa ubomi benkonzo yodaka lokutyabeka.
Ixesha lokuposa: Dec-13-2024