Ukuphakama nokuzinza kokwakhiwa kwemishini yodaka lokuplasta yizici ezibalulekile ekuthuthukisweni, futhi i-cellulose ether, njengesithako esiyinhloko sodaka lokuplasta, idlala indima engenakushintshwa.I-cellulose etherinezici zenani eliphezulu lokugcinwa kwamanzi kanye nempahla yokugoqa enhle, futhi ifaneleka ngokukhethekile ukwenziwa ngomshiniukwakhiwawosimende wokuplasta.
Izinga lokugcinwa kwamanzi kodaka lokukhonkolo
Izinga lokugcinwa kwamanzi odaka lokuplasta liwumkhuba okhulayo lapho i-viscosity ye-cellulose ether isuka ku-50,000 kuya ku-100,000, futhi kuwumkhuba oyanciphayo uma isuka ku-100,000 kuya ku-200,000, kuyilapho izinga lokugcinwa kwamanzi kwe-cellulose ether yokufafaza ngomshini selifinyelele. ngaphezu kwama-93%.Uma izinga lokugcinwa kwamanzi liphezulu kudaka, mancane amathuba okuthi udaka luyopha.Ngesikhathi sokuhlolwa kokufafaza ngomshini wokufafaza udaka, kwatholakala ukuthi lapho izinga lokugcinwa kwamanzi e-cellulose ether lingaphansi kuka-92%, udaka luvame ukopha ngemva kokubekwa isikhathi esithile, futhi, ekuqaleni kokufafaza. , kulula ikakhulukazi ukuvimba ipayipi.Ngakho-ke, lapho silungiselela udaka lokuplasta olufanele ukwakhiwa ngomshini, kufanele sikhethe i-cellulose ether enenani eliphakemeukugcinwa kwamanziisilinganiso.
Ukunamathisela udaka 2h ukulahlekelwa ukungaguquguquki
Ngokwezidingo ze-GB/T25181-2010 “I-Ready Mixed Mortar”, imfuneko yokulahlekelwa ukungaguquguquki kwamahora amabili yodaka olujwayelekile lokuplasta lungaphansi kwama-30%.Ukuhlolwa kokulahlekelwa kokuvumelana kwe-2h kwenziwa ngama-viscosities we-50,000, 100,000, 150,000, kanye ne-200,000.Kungabonakala ukuthi njengoba i-viscosity ye-cellulose ether ikhula, inani le-2h lokungaguquguquki kokulahlekelwa kodaka lizokwehla kancane kancane.Kodwa-ke, ngesikhathi sokufafaza kwangempela, kwatholakala ukuthi ngesikhathi sokwelashwa kokulinganisa kamuva, ngenxa yokuthi i-viscosity ye-cellulose ether iphezulu kakhulu, ukuhlangana phakathi kodaka kanye ne-trowel kuyoba kukhulu, okungahambisani nokwakhiwa.Ngakho-ke, esimweni sokuqinisekisa ukuthi udaka aluhlali futhi alunciphisi, i-viscosity value ephansi ye-cellulose ether, ingcono.
Ukuvulwa kodaka lokunamathiselaisikhathi
Ngemva kweudaka lodakaifafazwa odongeni, ngenxa yokumuncwa kwamanzi kwe-substrate yodonga kanye nokuhwamuka komswakama endaweni yodaka, udaka luzokwakha amandla athile ngesikhathi esifushane, okuzothinta ukwakhiwa kokulinganisa okulandelayo, ngakho-ke kudingekile ukuhlaziya isikhathi sokumisa udaka.Ivelu ye-viscosity ye-cellulose ether iku-100,000 kuya ku-200,000, isikhathi sokusetha asishintshi kakhulu, futhi sinokuhlobana okuthile nezinga lokugcinwa kwamanzi, okusho ukuthi, ukuphakama kwezinga lokugcinwa kwamanzi, isikhathi eside. isikhathi sokumisa udaka.
Uketshezi lodaka lokuplasta
Ukulahleka kwemishini yokufafaza kuhlobene kakhulu nokumanzi kodaka lokuplasta.Ngaphansi kwesilinganiso esifanayo samanzi-material, ukuphakama kwe-viscosity ye-cellulose ether, kunciphisa inani le-fluidity lodaka.Okusho ukuthi, ukuphakama kwe-viscosity ye-cellulose ether, kukhulu ukumelana nodaka kanye nokuguga okukhulu kwemishini.Ngakho-ke, ekwakhiweni komshini wokunamathisela udaka, i-viscosity ephansi ye-cellulose ether ingcono.
Ukumelana ne-sag of plastering mortar
Ngemuva kokuthi udaka lokukhonkolo lufuthwe odongeni, uma ukumelana ne-sag of theudakaakukuhle, udaka luzocwila noma lushelele, luthinte kakhulu ukucaba kodaka, okuzodala inkinga enkulu ekwakhiweni kwakamuva.Ngakho-ke, udaka oluhle kufanele lube ne-thixotropy enhle kakhulu kanye nokumelana ne-sag.Ukuhlola kutholwe ukuthi ngemva kokuba i-cellulose ether ene-viscosity engu-50,000 kanye ne-100,000 yamiswa yabheka phezulu, amathayela ashelela phansi ngokuqondile, kuyilapho i-cellulose ether ene-viscosity engu-150,000 kanye no-200,000 ayizange ishelele.I-engeli isamile iqonde, futhi akukho ukushelela okuzokwenzeka.
Amandla odaka lokuplasta
Kusetshenziswa u-50 000, 100,000, 150,000, u-200,000, futhi ama-250,000 ama-cellulose afelles ukulungiselela ukwakhiwa kodaka ngokwenza umsebenzi wokwakha, kwatholakala ukuthi ngokwanda kwe-cellulose ether viscosity, inani lamandla olimi oluhlaza olimi oluphansi.Lokhu kungenxa yokuthi i-cellulose ether yenza isisombululo esiphezulu se-viscosity emanzini, futhi inani elikhulu lama-bubbles omoya azinzile lizokwethulwa ngesikhathi senqubo yokuxuba udaka.Ngemuva kokuthi usimende uqina, lawa mabhamuza omoya azokwakha inani elikhulu lama-voids, ngaleyo ndlela anciphise inani lamandla lodaka.Ngakho-ke, udaka lokuplasta olufanele ukwakhiwa kwemishini kufanele lukwazi ukuhlangabezana nenani lamandla elidingwa umklamo, futhi kukhethwe i-cellulose ether efanelekile.
Ukuhlanganiswa kwezinto ezisetshenziswa ngomshini womuntu kuyisici esibalulekile sokwakhiwa kwemishini, futhi ikhwalithi yodaka ibaluleke kakhulu.Kuphela ngokusebenzisa i-cellulose ether efanele lapho izakhiwo zodaka zingakwazi ukuhlangabezana nezidingo zokufutha ngomshini.
Isikhathi sokuthumela: Jul-21-2023