I-Hydroxypropyl methylcellulose (HPMC)Ikhompiyutha ebalulekile ye-cellulose ether esetshenziswa kabanzi ezintweni zokwakha, ikakhulukazi odongeni osuselwa kuthusi, izinto zokwakha ezisekelwe ku-gypsum kanye nezingubo zokugqoka. I-HPMC idlala indima enkulu ekwenzeni ngcono izakhiwo zodaka, kufaka phakathi ukwenza ngcono izakhiwo zayo ezingangeni manzi.
1. Thuthukisa ukugcinwa kwamanzi kodaka
Enye yezici eziphawuleka kakhulu ze-HPMC ngumthamo wayo omuhle wokugcina amanzi. Ukungeza i-HPMC ku-motar kunganciphisa kakhulu isilinganiso sokulahleka kwamanzi ku-mende. Ukusebenza okuthize yile:
Nweba isikhathi sokuphendula kwesiko le-hymment
Vimbela ukwakheka kwemifantu: Ukulahleka kwamanzi okusheshayo kungadala ukuthi udaka anciphe futhi aqale ukuqhekeka okuncane, ngaleyo ndlela anciphise izakhiwo ezingena ngaphansi kwamanzi.I-HPMCinganciphisa izinga lokulahleka kwamanzi futhi linciphise ukuqhekeka okubangelwa yi-shrinkage eyomile.
Ukuthuthuka ekusebenzeni kokugcinwa kwamanzi kwenza ukwakheka kwangaphakathi kwe-dunseser yodaka, kunciphisa i-poribity, futhi kuthuthukise kakhulu ukungakhululeki kodaka, ngaleyo ndlela kuthuthukise ukusebenza kwayo kwamanzi.
2. Thuthukisa ukusebenziseka kodaka
Izici ze-Viscosity ze-HPMC zithuthukisa izakhiwo zesimbozo sodaka, ngaleyo ndlela zithuthukise ukusebenza kwazo:
Yehlisa ukopha: I-HPMC ingasabalalisa amanzi ngokulinganayo, okuvumela amanzi ukuthi asatshalaliswe kakhudlwana kudaka nokwehliswa kwama-pores okubangelwa ukuhlukaniswa kwamanzi.
Thuthukisa ukunxusa kodaka: I-HPMC ithuthukisa amandla okubopha phakathi kodaka kanye nezinto zesisekelo, ngaleyo ndlela kunciphise ukuthi kungenzeka umswakama angena ngegebe phakathi kwegebe eliphakathi kwezisekelo zesisekelo kanye nodaka .
Ukuphuculwa kwekhwalithi yokwakha kuthinta ngqo umphumela ongavunyelwe wodaka. Ungqimba olunembozo lomfaniswano nolomnyene lungavimba ngempumelelo ukungena komswakama.
3. Yakha ifilimu evikelayo engaphezulu
I-HPMC inezakhiwo ezenziwe ngefilimu futhi ingakha ifilimu elincanyana nelimsumisela ebusweni bodaka:
Yehlisa izinga lokuhwamuka kwamanzi: Ngemuva kokuqedwa kokwakha, i-HPMC izokwakha ifilimu evikelayo ebusweni bodaka ukuze kuncishiswe ukumunca umswakama ngaphakathi kwemvelo yangaphandle.
Vimba ukungena okumanzi
Lokhu kuvikelwa okungaphezulu kuhlinzeka ngokuvikelwa okwengeziwe kwezakhiwo ezingenamanzi zodaka.
4. Yehlisa i-posurity kadaka
I-HPMC ingathuthukisa ngempumelelo i-microstruction yodaka. Indlela yayo yesenzo imi kanje:
Ukugcwalisa Umphumela: Ama-molecule we-HPMC angangena esakhiweni esingama-microprorous olimini futhi agcwalise ingxenye ethile, ngaleyo ndlela anciphise iziteshi zomswakama.
Thuthukisa ukuhlangana kwemikhiqizo ye-hydration: Ngokugcinwa kwamanzi, i-HPMC ithuthukisa ukufana kanye nokuhlangana kwemikhiqizo ye-Cement Hydration futhi kunciphisa inani lama-pores amakhulu odakeni.
Ukuncishiswa kwe-motar porsity kungathuthuki nje ukusebenza kwamanzi okungavunyelwe, kepha futhi kuthuthukisa ukuqina kodaka.
5. Thuthukisa ukumelana nesithwathwa nokuqina
Ukungena kwamanzi kuzodala ukuthi udaka lulimele ngenxa yesithwathwa esigcwele ezindaweni eziphansi zokushisa. Umphumela ongenamanzi we-HPMC anganciphisa ukungena kwamanzi futhi anciphise ukulimala okubangelwa imijikelezo ye-freeze-thaw:
Vikela ukugcinwa komswakama: ukunciphisa ukugcinwa komswakama ngaphakathi kodaka futhi kunciphise umphumela we-frost heave.
Ukunwebeka kodaka: ngokunciphisa ukuhlaselwa kwamanzi kanye nomonakalo wamaqhwa-shu-thaw, i-hpmc inyusa ukuqina kokuqina kwesilonda eside.
I-HPMC ithuthukisa ukusebenza kwamanzi ngamanzi ngodaka ngezinto ezilandelayo: Ukuthuthukisa ukugcinwa kwamanzi, ukwenza ngcono ukusebenziseka, ukwakha ifilimu evikelayo, ukunciphisa impama kanye nokwenza ngcono isithwathwa. Umphumela we-synergistic walezi zindawo uvumela udaka ukuze abonise imiphumela engcono yokungena kwamanzi ezingcemeni ezisebenzayo. Noma ngabe ngodaka olungananzi amanzi, izikejana zokuzimela noma izinamathisela ze-tile, i-HPMC idlala indima ebalulekile.
Kuzinhlelo zokusebenza ezisebenzayo, inani le-HPMC elengezwa izidingo okufanele lilungiswe ngokwezidingo ezithile ukuze liqinisekise ukuthi alikwazi kuphela ukwenza umphumela omuhle ongavunyelwe, kodwa futhi ligcine ukulingana kwezinye izinkomba zodaka. Ngokusebenzisa okunengqondo kwe-HPMC, ukusebenza kwamanzi ngezinto zokwakha kungathuthukiswa kakhulu futhi ukuvikelwa okuthembekile kungahlinzekwa amaphrojekthi wokwakha.
Isikhathi Seposi: Nov-23-2024