I-HPMC (HYDROXYPROPYL Methylcellulose)Ngabe i-polymer compound esetshenziswa kabanzi emikhiqizweni kasimende. Inokuqina okuhle kakhulu, ukusabalalisa, ukugcinwa kwamanzi kanye nezakhiwo ezinamathela, ngakho-ke kungathuthukisa kakhulu ukusebenza kwemikhiqizo yoseyili. Enqubweni yokukhiqiza kanye nenqubo yokufaka isicelo semikhiqizo yesimende, zivame ukubhekana nezinkinga ezinjengokuthuthuka kwe-fluority, ukuthuthukisa ukumelana nokuqhekeka, kanye nokwenza ngcono amandla. Ukungezwa kwe-HPMC kungaxazulula ngempumelelo lezi zinkinga.
1. Thuthukisa uketshezi nokusebenza kukasimende slurry
Enqubweni yokukhiqiza yemikhiqizo yesimende, u-fluidity yinto ebalulekile ethinta imisebenzi yokwakha kanye nekhwalithi yomkhiqizo. Njengomkhulu we-polymer, i-hpmc ingakha isakhiwo senethiwekhi esizinzile e-cement slurry, ngaleyo ndlela ngenze ngcono i-fluodity nokusebenza kwe-slurry. Inganciphisa kakhulu i-viscosity umehluko we-cement slurry, okwenza ipulasitiki ethambile futhi ibe lula ekwakhiweni nasekuthululeni. Ngaphezu kwalokho, i-HPMC ingagcina ukufana kwe-slurry kasimende, vimbela i-slurry kasimende kusuka ekuhlukaniseni ngesikhathi senqubo yokuxuba, futhi uthuthukise ukusebenza ngesikhathi sokwakha.
2. Thuthukisa ukugcinwa kwamanzi kwemikhiqizo yesimende
Inqubo ye-hydration ka usimende kuyisihluthulelo sokwakhiwa kwamandla emikhiqizo ye-CEUND. Kodwa-ke, uma amanzi esigabeni sikasimende avele avele noma alahlekelwe ngokushesha, ukusabela kwe-hydration kungenzeka kungaphelele, ngaleyo ndlela kuthinte amandla nemikhiqizo ye-CEUND. I-HPMC inokugcinwa kwamanzi okuqinile, okungadonsa ngempumelelo amanzi, ukubambezela phansi amanzi, futhi kugcinwe umswakama we-slurry esitebeleni esilinganisweni, ngaleyo ndlela kube nomthelela kumandla aphelele we-CEAND, ngaleyo ndlela uthuthukise amandla namandla e imikhiqizo yesimende. Ubuningi.
3. Thuthukisa ukumelana nokuqhekeka nokuqina kwemikhiqizo yesimende
Imikhiqizo kasimende ithambekele ekuqhekekeni ngesikhathi senqubo eqinile, ikakhulukazi ukuqhekeka okubangelwa ukuncipha okusheshayo komswakama ngesikhathi senqubo yokomisa. Ukungezwa kwe-HPMC kungathuthukisa ukumelana nokuqhekeka kwemikhiqizo kasimende ngokwandisa i-viscoeliasticity ye-slurry. Ukwakheka kwamangqamuzana kwe-HPMC kungakha isakhiwo senethiwekhi ku-CEAND, esiza ukusabalalisa ukucindezelwa kwangaphakathi futhi kunciphise ukugxila kwengcindezi ngesikhathi sokuqina kosimende, ngaleyo ndlela kunciphise ukwenzeka kwemifantu. Ngaphezu kwalokho, i-HPMC nayo ingathuthukisa ubulukhuni bemikhiqizo ye-CEUNT, ukuzenza mancane amathuba okuqhekeka ngaphansi kwezimo zokushisa ezomile noma eziphansi.
4. Thuthukisa ukumelana kwamanzi nokuqina kwemikhiqizo kasimende
Ukuqina nokumelana kwamanzi kwemikhiqizo yesimende kuhlobene ngqo nokusebenza kwawo ezindaweni ezinokhahlo. I-HPMC ingakha ifilimu elizinzile ku-slurry kasimende ukunciphisa ukungena komswakama nezinye izinto eziyingozi. Kungathuthukisa futhi ukumelana kwamanzi kwemikhiqizo yesimende ngokwenza ngcono ubuningi buka usimende kanye nokwenza ngcono ukumelana kwemikhiqizo yesimende kuya kumswakama. Ngesikhathi sokusetshenziswa kwesikhathi eside, imikhiqizo kasimende ezinzile ngokuswakama okuphezulu noma ezindaweni ezingaphansi kwamanzi, ithambekele kangako ekuchitheni nasekuguguleni, futhi yandise impilo yabo yenkonzo.
I-5. Thuthukisa amandla kanye nejubane eliqinile lemikhiqizo yesimende
Ngesikhathi senqubo yokuphendula ye-hydration yemikhiqizo yesimende, ukungezwa kwe-HPMC kungakhuthaza ukuhlakazwa kwezinhlayiya zosekhukhwini ku-slurry usimende futhi kwandise indawo yokuxhumana phakathi kwamazinga we-CEMET, Ngaphezu kwalokho, i-HPMC ingakha ukusebenza kahle kwesibopho sikasimende namanzi, ngcono ukukhula kwamandla kusenesikhathi, yenza inqubo enzima yemikhiqizo kasimende iyunifomu ngokwengeziwe, futhi ngaleyo ndlela uthuthukise amandla okugcina. Kwezinye izinhlelo zokusebenza ezikhethekile, i-HPMC ingashintsha futhi nezinga le-hydration likasimende ukuze ivumelane nezidingo zokwakha ezindaweni ezihlukile.
6. Thuthukisa ukubukeka kanye nekhwalithi ephezulu yemikhiqizo yesimende
Ikhwalithi yokubukeka yemikhiqizo yesimende ibalulekile emphumeleni wokugcina wokusetshenziswa, ikakhulukazi ekwakhiweni okuphezulu nemikhiqizo yokuhlobisa, lapho ubushelelezi nobushelelezi bokubukeka kungenye yezinto ezibalulekile ukukala ikhwalithi. Ngokushintsha i-viscosity kanye nezimbongi zomzimba kasimende slurry, i-HPMC inganciphisa ngempumelelo izinkinga ezifana nama-bubble, amaphutha, nokusatshalaliswa okungalingani, ngaleyo ndlela enze indawo yemikhiqizo yesimende ibushelelezi futhi ibusheleleke futhi ithuthukise ikhwalithi yokubukeka. Kweminye imikhiqizo yokuhlobisa usimende, ukusetshenziswa kwe-HPMC nakho kungathuthukisa ukufana nokuqina kombala wazo, kunikeze imikhiqizo ukubukeka okubucayi ngokwengeziwe.
7. Thuthukisa ukumelana nokuphikiswa kwesithwathwa kwemikhiqizo yesimende
Imikhiqizo kasimende esetshenziswe ezindaweni zokushisa eziphansi kudingeka ibe nezinga elithile lokumelana nesithwathwa ukuvikela imifantu nomonakalo odalwe yimijikelezo ye-freeze-thaw. I-HPMC ingathuthukisa ukumelana nesithwathwa kwemikhiqizo yesimende ngokuthuthukisa ukuqina kwesakhiwo se-slurry kasimende. Ngokwenza ngcono ukuhlanganiswa kwemikhiqizo kasimende futhi kunciphisa okuqukethwe umswakama wama-pores omakhale, i-HPMC ithuthukisa ukumelana nesithwathwa kwemikhiqizo yesilondelo ngaphansi kwezimo zokushisa eziphansi futhi igwema ukukhishwa okubangelwa ukwandisa kukakhonkolo ngenxa yokuqandelwa kwamanzi.
Ukusetshenziswa kweI-HPMCEmikhiqizweni kasimende kunezinhlobonhlobo eziningi zezinzuzo futhi kungathuthukisa kakhulu ukusebenza kwemikhiqizo ethosiwe ngokusebenzisa izindlela ezahlukahlukene. Akukwazi ukuthuthukisa kuphela uketshezi, ukugcinwa kwamanzi, ukumelana kwamanzi, ukumelana nokuqhekeka kanye namandla emikhiqizo yesimende, kepha futhi kuthuthukisa ikhwalithi ephezulu, ukuqina kwempahla eqinile yemikhiqizo yesimende. Njengoba imboni yezokwakha iyaqhubeka nokwenza ngcono izidingo zomsebenzi wemikhiqizo yesimende, i-HPMC izosetshenziswa kabanzi futhi kabanzi ukuhlinzeka ngokuxhaswa kokusebenza okuzinzile nokusebenza komkhiqizo.
Isikhathi sePosi: Dec-06-2024