Abstract:Umthelela wokuqukethwe okuhlukile kwe-hydroxypropyl methylcellulose ether kuzakhiwo zodaka oluvamile oluxutshwe okomile uye wacwaningwa.Imiphumela yabonisa ukuthi: ngokunyuka kokuqukethwe kwe-cellulose ether, ukuhambisana nokuminyana kwehle, futhi isikhathi sokusetha sinciphile.Isandiso, amandla okucindezela angu-7d kanye nama-28d ehlile, kodwa ukusebenza okuphelele kodaka oluxutshwe okomile kuye kwathuthukiswa.
0.Isandulelo
Ngo-2007, ongqongqoshe abayisithupha kanye namakhomishana ezwe akhipha “Isaziso Sokwenqabela Ukuxutshwa Kwezidaka Esizeni Kwamanye Amadolobha Ngaphakathi Komkhawulo Wesikhathi”.Njengamanje, amadolobha angu-127 ezweni lonke enze umsebenzi “wokwenqabela udaka olukhona,” okulethe intuthuko engakaze ibonwe ekuthuthukisweni kodaka oluxutshwe owomile.ithuba.Ngokuthuthuka okunamandla kodaka oluxutshwe okomile ezimakethe zokwakha zasekhaya nezangaphandle, izixube ezahlukahlukene zodaka oluxubekile nazo ziye zangena kule mboni esafufusa, kodwa ezinye izinkampani zokukhiqiza udaka nokuthengisa zenza ihaba ngamabomu ukusebenza kahle kwemikhiqizo yazo, zidukisa ezomile- imboni yodaka oluxubile.ukuthuthukiswa okunempilo nokuhlelekile.Njengamanje, njengezixube zikakhonkolo, izixube zodaka oluxutshwe owomile zisetshenziswa kakhulu ngokuhlangana, futhi zimbalwa uma kuqhathaniswa ezisetshenziswa zodwa.Ikakhulukazi, kunenqwaba yezinhlobo ze-admixtures kwezinye zezinsimbi ezixubene ezomile ezisebenzayo, kodwa kudaka olujwayelekile oluxutshwe okomile, asikho isidingo sokuphishekela inani lezinto ezixubile, kodwa kufanele kuqashelwe kakhulu ekusebenzeni kwayo nokusebenza, ukuze gwema ukusetshenziswa ngokweqile kwezixube zodaka, okubangela ukungcola okungadingekile, futhi kuphazamise ngisho nekhwalithi yephrojekthi.Odakeni olujwayelekile oluxutshwe okomile, i-cellulose ether idlala indima yokugcina amanzi, ukujiya, kanye nokwenza ngcono ukusebenza komsebenzi wokwakha.Ukusebenza kahle kokugcinwa kwamanzi kuqinisekisa ukuthi udaka oluxutshwe okomile ngeke lubangele ukuthungathwa kwesihlabathi, impushana kanye nokunciphisa amandla ngenxa yokushoda kwamanzi kanye nokungapheleli kukasimende okungaphelele;umphumela wokuqina ukhulisa kakhulu amandla esakhiwo sodaka olumanzi.Leli phepha lenza ucwaningo oluhlelekile mayelana nokusetshenziswa kwe-cellulose ether odakeni olujwayelekile oluxutshwe okomile, olunokubaluleka okuyisiqondiso sendlela yokusebenzisa izixube ngokunengqondo odakeni olujwayelekile oluxutshwe okomile.
1. Impahla nezindlela ezisetshenziswa ekuhlolweni
1.1 Izinto ezingasetshenzisiwe zokuhlolwa
Usimende wawungu-P. 042.5 usimende, umlotha wempukane uwumlotha we-Class II ovela endaweni yamandla e-Taiyuan, isamba esihle siyisihlabathi somfula esomile esinosayizi ongu-5 mm noma ngaphezulu esisefwe, i-fineness modulus yi-2.6, kanye ne-cellulose ether etholakala ngokuthengisa i-hydroxypropyl methyl cellulose ether (viscosity 12000 MPa·s).
1.2 Indlela yokuhlola
Ukulungiswa kwesampula nokuhlolwa kokusebenza kwenziwa ngokuya nge-JCJ/T 70-2009 indlela yokuhlola eyisisekelo yokusebenza kodaka lokwakha.
2. Uhlelo lokuhlola
2.1 Ifomula yokuhlolwa
Kulokhu kuhlolwa, inani lempahla eluhlaza ngayinye yethani elingu-1 lodaka oluxutshwe okomile lisetshenziswa njengefomula eyisisekelo yokuhlola, futhi amanzi ukusetshenziswa kwamanzi kwethani elingu-1 lodaka oluxutshwe okomile.
2.2 Uhlelo oluqondile
Kusetshenziswa le fomula, inani le-hydroxypropyl methylcellulose ether elingezwe ethanini ngalinye lodaka lokunameka oluxutshwe okomile lithi: 0.0 kg/t, 0.1 kg/t, 0.2 kg/t, 0.3 kg/t, 0.4 kg/tt, 0.6 kg/ t, ukufunda imiphumela yemithamo ehlukene ye-hydroxypropyl methylcellulose ether ekugcineni amanzi, ukungaguquguquki, ukuminyana okusobala, isikhathi sokusetha, namandla acindezelayo odaka oluvamile oluxutshwe okomile, ukuze kuqondiswe ukuplasta okuxutshwe okomile Ukusetshenziswa okufanele kodaka. ama-admixtures angakwazi ukubona izinzuzo zenqubo elula yokukhiqiza udaka olomile, ukwakhiwa okulula, ukuvikelwa kwemvelo nokonga amandla.
3. Imiphumela yokuhlolwa nokuhlaziya
3.1 Imiphumela yokuhlolwa
Imithelela yemithamo ehlukene ye-hydroxypropyl methylcellulose ether ekugcineni amanzi, ukungaguquguquki, ukuminyana okusobala, isikhathi sokusetha, namandla acindezelayo odaka oluvamile oluxutshwe okomile lokuplasta.
3.2 Ukuhlaziywa kwemiphumela
Ingabonakala emphumeleni wemithamo ehlukene ye-hydroxypropyl methylcellulose ether ekugcineni amanzi, ukungaguquguquki, ukuminyana okusobala, isikhathi sokusetha, namandla acindezelayo odaka oluvamile oluxutshwe okomile lokuplasta.Ngokukhula kokuqukethwe kwe-cellulose ether, izinga lokugcinwa kwamanzi odaka olumanzi nalo likhula kancane kancane, lisuka ku-86.2% lapho i-hydroxypropyl methyl cellulose ingaxutshwe, kuya ku-0.6% lapho i-hydroxypropyl methyl cellulose ixutshwa.Izinga lokugcinwa kwamanzi lifinyelela ku-96.3%, okufakazela ukuthi umphumela wokugcina amanzi we-propyl methyl cellulose ether muhle kakhulu;ukuvumelana kuncipha kancane kancane ngaphansi komphumela wokugcina amanzi we-propyl methyl cellulose ether (ukusetshenziswa kwamanzi ngethani lodaka kuhlala kungashintshile ngesikhathi sokuhlolwa);Ukuminyana okusobala kubonisa inkambiso eyehlayo, okubonisa ukuthi umphumela wokugcina amanzi we-propyl methyl cellulose ether ukhuphula umthamo wodaka olumanzi futhi wehlise ukuminyana;isikhathi sokusetha siyakhula kancane kancane ngokwenyuka kokuqukethwe kwe-hydroxypropyl methyl cellulose ether, kanye nokuqukethwe kokuthi Uma ifinyelela ku-0.4%, idlula ngisho nenani elishiwo lika-8h elidingwa izinga, okubonisa ukuthi ukusetshenziswa okufanele kwe-hydroxypropyl methylcellulose ether kuye kwadingeka. umphumela omuhle wokulawula ngesikhathi sokusebenza kodaka olumanzi;amandla okucindezela ka-7d no-28d ehlile (Uma umthamo omkhulu, ukuncipha okusobala kakhulu).Lokhu kuhlobene nokwenyuka kwevolumu yodaka kanye nokuncipha kokuminyana okubonakalayo.Ukwengezwa kwe-hydroxypropyl methyl cellulose ether kungakha imbobo evaliwe ngaphakathi kodaka oluqinile ngesikhathi sokusetha nokuqina kodaka.Ama-Micropores athuthukisa ukuqina kodaka.
4. Izinyathelo zokuphepha zokusetshenziswa kwe-cellulose ether odakeni olujwayelekile oluxutshwe okomile
1) Ukukhethwa kwemikhiqizo ye-cellulose ether.Ngokuvamile, i-viscosity enkulu ye-cellulose ether, umphumela wayo wokugcina amanzi ungcono, kodwa i-viscosity ephakeme, iyancipha ukuncibilika kwayo, okulimaza amandla nokusebenza kokwakhiwa kodaka;ubucwebe be-cellulose ether buphansi uma kuqhathaniswa nodaka oluxutshwe okomile.Kuthiwa uma icoleka kuba lula ukuyihlakaza.Ngaphansi komthamo ofanayo, ukucoleka kokuqina, kuba ngcono umphumela wokugcina amanzi.
2) Ukukhethwa komthamo we-cellulose ether.Kusukela emiphumeleni yokuhlolwa nokuhlaziywa komthelela wokuqukethwe kwe-cellulose ether ekusebenzeni kodaka lokunamathisela okomile, kungabonakala ukuthi ukuphakama kokuqukethwe kwe-cellulose ether, kungcono, kufanele kucatshangelwe kusukela ezindlekweni zokukhiqiza, ikhwalithi yomkhiqizo, ukusebenza komsebenzi wokwakha kanye Nezici ezine zendawo yokwakha ukuze kuqondwe ngokuphelele umthamo ofanele.Umthamo we-hydroxypropyl methyl cellulose ether odakeni olujwayelekile oluxutshwe okomile ukhethwa ngu-0.1 kg/t-0.3 kg/t, futhi umphumela wokugcina amanzi awukwazi ukuhlangabezana nezidingo ezijwayelekile uma inani le-hydroxypropyl methyl cellulose ether lengezwa ngenani elincane.Ingozi yekhwalithi;umthamo we-hydroxypropyl methyl cellulose ether odakeni olunamekiwe olukhethekile olungazweli cishe ngu-3 kg/t.
3) Ukufakwa kwe-cellulose ether odakeni olujwayelekile oluxutshwe okomile.Enqubweni yokulungisa udaka olujwayelekile oluxutshwe okomile, inani elifanele lengxube lingengezwa, okungcono ngokugcinwa kwamanzi athile kanye nomphumela wokujiya, ukuze likwazi ukwakha umphumela ohlanganisiwe we-superposition nge-cellulose ether, ukunciphisa izindleko zokukhiqiza, nokugcina izinsiza. ;uma isetshenziswa iyodwa Nge-cellulose ether, amandla okubopha awakwazi ukuhlangabezana nezidingo, futhi inani elifanele le-latex powder elihlakazeka kabusha lingangezwa;ngenxa yenani eliphansi lokuxutshwa kodaka, iphutha lokulinganisa likhulu uma lisetshenziswa lodwa.Izinga lemikhiqizo yodaka oluxutshwe okomile.
5. Iziphetho neziphakamiso
I-1) Ku-plastering mortar evamile exutshwe okomile, ngokwanda kokuqukethwe kwe-hydroxypropyl methylcellulose ether, izinga lokugcinwa kwamanzi lingafinyelela ku-96.3%, ukuvumelana nokuminyana kuyancishiswa, futhi isikhathi sokusetha sinwetshwa.Amandla acindezelayo we-28d ehla, kodwa ukusebenza okuphelele kodaka oluxutshwe okomile kwathuthukiswa lapho okuqukethwe kwe-hydroxypropyl methyl cellulose ether kwakusesilinganisweni.
2) Enqubweni yokulungisa udaka olujwayelekile oluxutshwe okomile, i-cellulose ether ene-viscosity efanelekile kanye ne-fineness kufanele ikhethwe, futhi umthamo wayo kufanele unqunywe ngokuqinile ngokuhlolwa.Ngenxa yenani eliphansi lengxube yodaka, iphutha lokulinganisa likhulu uma lisetshenziswa lodwa.Kunconywa ukuyixuba nesithwali kuqala, bese ukwandisa inani lokwengeza ukuze uqinisekise ikhwalithi yemikhiqizo yodaka exutshwe okomile.
I-3) Udaka oluxutshwe okomile luyimboni esafufusa e-China.Enqubweni yokusebenzisa izinto ezixubene nodaka, akumelwe siphishekele ubuningi ngokunganaki, kodwa sinake kakhulu izinga futhi sinciphise izindleko zokukhiqiza, sikhuthaze ukusetshenziswa kwezinsalela zemfucuza yezimboni, futhi sizuze ngempela ukonga amandla nokunciphisa ukusetshenziswa.
Isikhathi sokuthumela: Feb-22-2023