I-Hydroxypropyl methylcellulose (HPMC)iyikhemikhali ye-polymer ephilayo esetshenziswa kakhulu ezintweni zokwakha, ikakhulukazi odakeni, ezimbotsheni, ezinamathelayo neminye imikhiqizo. Umsebenzi oyinhloko we-HPMC admixture ukuthuthukisa ukusebenza kokwakhiwa kodaka, ukuthuthukisa ukugcinwa kwamanzi nokwandisa isikhathi sokuvula. Njengoba isidingo sezinto ezisebenza kahle embonini yezokwakha siqhubeka nokwanda, ukusetshenziswa kwe-HPMC sekuthole ukunakwa okubanzi.
1. Izakhiwo eziyisisekelo ze-HPMC
I-HPMC iyi-ether ye-cellulose encibilikayo emanzini ene-hydration enhle, ukunamathela nokujiya. Ingathuthukisa kakhulu ukugcinwa kwamanzi odaka, inwebe isikhathi sokuvula, futhi ithuthukise ukumelana nokuntenga nokusebenza kokwakhiwa kodaka. Lezi zakhiwo ezinhle kakhulu zenza i-HPMC ibe enye yezingxube ezivamile odakeni nezinye izinto zokwakha.
2. Inqubo yokomisa udaka
Inqubo yokomisa yodaka ngokuvamile ihlanganisa izingxenye ezimbili: ukuhwamuka kwamanzi kanye nokusabela kwe-cement hydration. Ukufakwa kukasimende kuyindlela eyinhloko yokwelapha udaka, kodwa ukuhwamuka kwamanzi ngesikhathi somiswa nakho kudlala indima ebalulekile. Umswakama odongeni lukasimende udinga ukususwa kancane kancane ngenqubo yokuhwamuka, futhi ijubane lale nqubo lithinta ngokuqondile ikhwalithi, ukuqina nokusebenza okulandelayo kokwakhiwa komkhiqizo ophelile ngemva kokwakhiwa.
3. Umthelela we-HPMC esivinini sokumisa udaka
Umthelela we-AnxinCel®HPMC admixture ngesivinini sokumisa udaka ubonakala ikakhulukazi ezicini ezimbili: ukugcinwa kwamanzi nokulawula ukuhwamuka kwamanzi.
(1) Ukugcina amanzi okuthuthukisiwe futhi kwehlise isivinini sokumisa
I-HPMC inezindawo eziqinile ze-hydration kanye nokugcinwa kwamanzi. Ingenza ifilimu ye-hydration odakeni ukunciphisa ukuhwamuka okusheshayo kwamanzi. Uma ukugcinwa kwamanzi kangcono kodaka, loma kancane ngoba amanzi agcinwa odakeni isikhathi eside. Ngakho-ke, ngemva kokwengeza i-HPMC, inqubo yokuhwamuka kwamanzi odongeni izovinjelwa ngezinga elithile, okuholela esikhathini sokumisa isikhathi eside.
Nakuba ukwehlisa ukuhwamuka kwamanzi kungase kwandise isikhathi sokumiswa kodaka, le nqubo yokomisa kancane iyazuzisa, ikakhulukazi phakathi nenqubo yokwakha, njengoba ingavimbela ngokuphumelelayo izinkinga ezinjengokoma komhlaba kanye nokuqhekeka kodaka futhi iqinisekise ikhwalithi yokwakha.
(2) Ukulungiswa kwenqubo ye-cement hydration
Iqhaza le-HPMC odakeni lukasimende aligcini nje ekwenzeni ngcono ukugcinwa kwamanzi. Ingakwazi futhi ukulawula inqubo ye-hydration kasimende. Ngokushintsha i-rheology yodaka, i-HPMC ingathinta izinga lokuxhumana phakathi kwezinhlayiya zikasimende nomswakama, ngaleyo ndlela kuthinte izinga lokugeleza kukasimende. Kwezinye izimo, ukungezwa kwe-AnxinCel®HPMC kungase kubambezele kancane inqubo yokufakwa kwe-hydration kasimende, okubangele ukuthi udaka lwelaphe kancane. Lo mphumela uvame ukufinyelelwa ngokulungisa ukusatshalaliswa kosayizi wezinhlayiyana zesamente kanye nokuxhumana kwezinhlayiya zikasimende, ngaleyo ndlela kuthinte isivinini sokumisa.
(3) Ukuzivumelanisa nokuswakama kwemvelo
I-HPMC ingathuthukisa ukumelana nokuhwamuka kodaka, yenze udaka luvumelane nezimo kumswakama wendawo. Endaweni eyomile, umphumela wokugcina amanzi we-HPMC ubaluleke kakhulu. Ingabambezela ngempumelelo ukulahleka komswakama ongaphezulu futhi inciphise ukuqhekeka kwendawo okubangelwa isivinini sokumisa ngokweqile. Lokhu kubaluleke kakhulu ezindaweni ezishisayo noma ezomile. Ngakho-ke, i-HPMC ayilungisi nje kuphela izinga lokuhwamuka kwamanzi, kodwa futhi ithuthukisa ukuguquguquka kodaka endaweni yangaphandle, yelula ngokungaqondile isikhathi sokumisa.
4. Izinto ezithinta isivinini sokumisa
Ngaphezu kokwengezwa kwenhlanganisela ye-HPMC, ijubane lokumisa lodaka liphinde lithinteke ezinye izici eziningi, kufaka phakathi:
Isilinganiso se-mortar: Isilinganiso sikasimende namanzi kanye ne-ratio ye-aggregate ecolekile ne-coarse aggregate izophazamisa umswakama wodaka kanjalo nesivinini sokumisa.
Izimo zemvelo: Izimo lokushisa, umswakama kanye nezimo zokujikeleza komoya yizici ezibalulekile ezithinta isivinini sokumisa kodaka. Endaweni enezinga lokushisa eliphezulu nomswakama ophansi, amanzi ahwamuka ngokushesha, ngokuphambene nalokho.
Ugqinsi lukadaka: Ugqinsi lukadaka luthinta ngqo inqubo yalo yokomisa. Ama-screed aminyene ngokuvamile athatha isikhathi eside ukuze ome ngokuphelele.
5. Ukucatshangelwa kwesicelo esisebenzayo
Ekusetshenzisweni okungokoqobo, onjiniyela bokwakha kanye nabasebenzi bokwakha ngokuvamile kudingeka balinganise isivinini sokumisa udaka nokusebenza kokwakhiwa. Njengengxube, i-HPMC ingabambezela isivinini sokumisa, kodwa lesi sici sizuzisa kakhulu ezindaweni lapho isikhathi sokwakha sidinga ukunakekelwa. Isibonelo, ezindaweni ezishisa kakhulu, ezomisa umoya, i-HPMC ingavimbela ngokuphumelelayo ukoma nokuqhekeka kwendawo, iqinisekise ukusebenza okungcono kanye nesikhathi eside sokuvula udaka ngesikhathi sokwakhiwa.
Kodwa-ke, kwezinye izimo ezithile, njengamaphrojekthi adinga ukomiswa ngokushesha kodaka, kungase kudingeke ukulawula inani lodaka.I-HPMCwengeze noma khetha ifomula engaqukethe i-HPMC ukusheshisa inqubo yokomisa.
Njengengxube yodaka, i-AnxinCel® HPMC ingathuthukisa ngempumelelo ukugcinwa kwamanzi kodaka, yandise isikhathi sokuvula, futhi ithinte ngokungaqondile ijubane lokumisa lodaka. Ngemva kokwengeza i-HPMC, isivinini sokumisa sodaka ngokuvamile sinciphisa, esinomthelela omuhle ekugwemeni izinkinga ezifana nokuqhekeka okomile ngesikhathi sokwakhiwa. Kodwa-ke, izinguquko zejubane lokumisa nazo zithintwa yizici ezihlukahlukene ezifana nesilinganiso sodaka kanye nezimo zemvelo. Ngakho-ke, ekusetshenzisweni okungokoqobo, inani le-HPMC kufanele likhethwe ngokunengqondo ngokwemibandela ethile ukuze kuzuzwe umphumela wokwakha ongcono kakhulu.
Isikhathi sokuthumela: Jan-10-2025