I-cellulose ether iyisengezo esivamile ezintweni zokwakha, esisetshenziselwa ukuthuthukisa ukusebenza kokwakhiwa kanye nezakhiwo zemishini ze-mortar. Ubunono bungenye yezici ezibalulekile ze-cellulose ether, okubhekisela ekusabalaleni kosayizi wezinhlayiya zayo.
Izici kanye nokusetshenziswa kwe-cellulose ether
I-cellulose ether ihlanganisa kakhulu i-hydroxypropyl methylcellulose (HPMC), i-hydroxyethyl cellulose (HEC), njll. Imisebenzi yabo eyinhloko ekwakheni udaka ihlanganisa:
Ukugcinwa kwamanzi: ngokunciphisa ukuhwamuka kwamanzi, ukwandisa isikhathi sokumuncwa kwesimende, kanye nokuthuthukisa amandla kadoti.
Ukuqina: Khulisa ukujiya kodaka futhi uthuthukise ukusebenza kokwakhiwa.
Thuthukisa ukumelana nokuqhekeka: Isici sokugcina amanzi se-cellulose ether sisiza ukulawula ukushwabana kwesimende, ngaleyo ndlela kuncishiswe ukuvela kokuqhekeka ku-mortar.
Ubuncane be-cellulose ether buthinta ukuhlakazeka kwayo, ukuncibilika kwayo kanye nokusebenza kahle kwayo ku-mortar, ngaleyo ndlela kuthinte ukusebenza kwayo konke.
Umphumela wokuqina kwe-cellulose ether emandleni kadaka ungahlaziywa kusukela kulezi zici ezilandelayo:
1. Izinga lokuncibilika kanye nokuhlakazeka
Izinga lokuncibilika kwe-cellulose ether emanzini lihlobene kakhulu nobuncane bayo. Izinhlayiya ze-cellulose ether ezinobuncane obuphezulu zincibilika kalula emanzini, ngaleyo ndlela zakha ukuhlakazeka okufanayo ngokushesha. Lokhu kusabalala okufanayo kungaqinisekisa ukugcinwa kwamanzi okuzinzile kanye nokuqina ohlelweni lonke lwe-mortar, kukhuthaze inqubekela phambili efanayo yokusabela kokumanziswa kwe-cement, futhi kuthuthukise amandla okuqala e-mortar.
2. Umthamo wokugcina amanzi
Ubuncane be-cellulose ether buthinta ukusebenza kwayo kokugcinwa kwamanzi. Izinhlayiya ze-cellulose ether ezinobuncane obuphezulu zinikeza indawo enkulu ethile, ngaleyo ndlela zakha izakhiwo ezincane ezigcina amanzi ku-mortar. Lawa ma-micropores angagcina amanzi ngempumelelo, andise isikhathi sokuphendula kwe-samente hydration, akhuthaze ukwakheka kwemikhiqizo ye-hydration, futhi ngaleyo ndlela athuthukise amandla e-mortar.
3. Ukubopha isixhumi
Ngenxa yokusabalala kwazo okuhle, izinhlayiya ze-cellulose ether ezinobunono obuphezulu zingakha ungqimba lokubopha olufana kakhulu phakathi kodaka kanye ne-aggregate, futhi zithuthukise ukubopha kwe-interface kodaka. Lo mphumela usiza udaka ukuthi lugcine i-plasticity enhle esigabeni sokuqala, lunciphise ukuqhekeka kokuncipha, ngaleyo ndlela luthuthukise amandla aphelele.
4. Ukukhuthazwa kokumuncwa kwesimende
Ngesikhathi senqubo yokumanzisa usimende, ukwakheka kwemikhiqizo yokumanzisa kudinga inani elithile lamanzi. I-cellulose ether enobuncane obuphezulu ingakha izimo zokumanzisa ezifanayo ku-mortar, igweme inkinga yokuntuleka komswakama wendawo noma okweqile, iqinisekise inqubekela phambili ephelele yokusabela kokumanzisa, ngaleyo ndlela ithuthukise amandla e-mortar.
Ucwaningo lokuhlola kanye nokuhlaziywa kwemiphumela
Ukuze kuqinisekiswe umphumela wokuqina kwe-cellulose ether emandleni e-mortar, ezinye izifundo zokuhlola zilungise ukuqina kwe-cellulose ether futhi zahlola izakhiwo zayo ze-mortar ngaphansi kwezilinganiso ezahlukene.
Umklamo wokuhlola
Lolu cwaningo luvame ukusebenzisa amasampula e-cellulose ether anobuncane obuhlukene futhi luwafake ku-cement mortar ngokulandelana. Ngokulawula ezinye izinto eziguquguqukayo (njengesilinganiso samanzi-cement, isilinganiso esihlanganisiwe, isikhathi sokuxuba, njll.), kuphela ubuncane be-cellulose ether obushintshwayo. Uchungechunge lwezivivinyo zamandla, okuhlanganisa amandla okucindezela kanye namandla okuguquguquka, luyabe selwenziwa.
Imiphumela yokuhlola ivame ukukhombisa:
Amasampula e-cellulose ether anobuncane obuphezulu angathuthukisa kakhulu amandla okucindezela kanye namandla okuguquguquka kodaka esigabeni sokuqala (njengezinsuku ezi-3 nezinsuku ezi-7).
Njengoba isikhathi sokupholisa sinwetshwa (njengezinsuku ezingama-28), i-cellulose ether enobunono obuphezulu ingaqhubeka nokunikeza ukugcinwa kwamanzi okuhle kanye nokubopha, okubonisa ukukhula okuqinile kwamandla.
Isibonelo, ekuhlolweni, amandla okucindezela ama-ether e-cellulose anobunono obuyi-mesh engu-80, i-mesh engu-100, kanye ne-mesh engu-120 ezinsukwini ezingu-28 kwakungu-25 MPa, 28 MPa, kanye no-30 MPa, ngokulandelana. Lokhu kukhombisa ukuthi uma ubunono be-ether ye-cellulose buphakeme, kulapho amandla okucindezela e-mortar eba makhulu khona.
Ukusetshenziswa okusebenzayo kokwenza ngcono i-cellulose ether fineness
1. Lungisa ngokwendawo yokwakha
Uma kwakhiwa endaweni eyomile noma ngaphansi kwezimo zokushisa okuphezulu, i-cellulose ether enobunono obuphezulu ingakhethwa ukuze kuthuthukiswe ukugcinwa kwamanzi kodaka futhi kuncishiswe ukulahleka kwamandla okubangelwa ukuhwamuka kwamanzi.
2. Sebenzisa nezinye izithasiselo
I-cellulose ether enobunono obuphezulu ingasetshenziswa kanye nezinye izithasiselo (njengezinciphisi zamanzi kanye nama-ejenti okufaka umoya) ukuze kuthuthukiswe ukusebenza kwe-mortar. Isibonelo, ukusetshenziswa kwezinciphisi zamanzi kunganciphisa isilinganiso samanzi nosimende futhi kwandise ubuningi be-mortar, kuyilapho i-cellulose ether inikeza ukugcinwa kwamanzi kanye nemiphumela yokuqinisa. Ukuhlanganiswa kwalokhu okubili kungathuthukisa kakhulu amandla e-mortar.
3. Ukuthuthukisa inqubo yokwakha
Ngesikhathi senqubo yokwakha, kubalulekile ukuqinisekisa ukuthi i-cellulose ether incibilikisiwe ngokuphelele futhi ihlakazekile. Lokhu kungafezwa ngokwandisa isikhathi sokuxuba noma ukusebenzisa imishini yokuxuba efanele ukuqinisekisa ukuthi inzuzo yobunono be-cellulose ether isetshenziswa ngokugcwele.
Ukuqina kwe-cellulose ether kunomthelela omkhulu emandleni e-mortar. I-cellulose ether enokuqina okuphezulu ingadlala indima engcono yokugcina amanzi, ukuqina nokuthuthukisa ukubopha kwe-interface, futhi ithuthukise amandla okuqala kanye nezakhiwo zesikhathi eside ze-mortar. Ezisetshenzisweni ezisebenzayo, ukuqina kwe-cellulose ether kufanele kukhethwe ngokufanele futhi kusetshenziswe ngokuya ngezimo ezithile zokwakha kanye nezidingo zokuthuthukisa ukusebenza kwe-mortar nokuthuthukisa ikhwalithi yephrojekthi.
Isikhathi sokuthunyelwe: Juni-24-2024