Ukufakwa Kwangaphandle Kokufakwa Kwamanzi Nezinhlelo Zokuqeda (i-EIFS) kudlala indima ebalulekile ekuhlinzekeni ukwahlukanisa, ukuvikela isimo sezulu kanye nobuhle bezakhiwo. IHydroxypropyl methylcellulose (HPMC) iyisengezo esisetshenziswa kakhulu osikeni lwe-EIFS ngenxa yokuguquguquka kwayo, ukugcinwa kwamanzi kanye nekhono lokuthuthukisa ukusebenza.
1. Isingeniso sodaka lwe-EIFS:
Udaka lwe-EIFS luyinhlanganisela yezinto ezisetshenziselwa ukwahlukanisa nokuqeda amasistimu odonga angaphandle.
Ivamise ukuhlanganisa izinto zokuhlanganisa usimende, ama-aggregates, imicu, izithasiselo namanzi.
Udaka lwe-EIFS lungasetshenziswa njengesiqalo sokuhlanganisa amaphaneli okufakwa ngaphakathi nanjengejazi eliphezulu lokuthuthukisa ubuhle nokuvikela isimo sezulu.
2.I-Hydroxypropylmethylcellulose (HPMC):
I-HPMC iyi-ether ye-cellulose etholakala ku-cellulose ye-polymer yemvelo.
Isetshenziswa kakhulu ezintweni zokwakha ukuze kugcinwe amanzi, ukuqina kanye nezakhiwo ezithuthukisa ukusebenza.
Kumagquma e-EIFS, i-HPMC isebenza njengesilungisi se-rheology, sithuthukisa ukunamathela, ukubumbana kanye nokumelana ne-sag.
3. Izithako zefomula:
a. Isibopho esisekelwe kusimende:
I-Portland Cement: Inikeza amandla nokunamathela.
Usimende ohlanganisiwe (isb. usimende we-limestone wase-Portland): Ukhuphula ukuqina futhi wehlise i-carbon footprint.
b. Ukuhlanganisa:
Isihlabathi: Ivolumu nokuthungwa kokuhlanganisa okuhle.
Ama-aggregate angasindi (isb. i-perlite enwetshiwe): Thuthukisa izici zokuvikela ukushisa.
C. fiber:
I-fiberglass engazweli nge-alkali: Ithuthukisa amandla aqinile kanye nokumelana nokuqhekeka.
d. Izithasiselo:
I-HPMC: ukugcinwa kwamanzi, ukusebenza kahle, nokumelana ne-sag.
I-ejenti yokungenisa umoya: Thuthukisa ukumelana nokuncibilika.
I-Retarder: Ilawula ukusetha isikhathi ezindaweni ezishisayo.
Izilungisi zePolymer: Thuthukisa ukuguquguquka nokuqina.
e. Amanzi: Abalulekile ekufakweni kwamanzi nokusebenza kahle.
4. Izici ze-HPMC kudaka lwe-EIFS:
a. Ukugcinwa Kwamanzi: I-HPMC imunca futhi igcine amanzi, iqinisekisa ukugeleza kwamanzi isikhathi eside futhi ithuthukisa ukusebenza.
b. Ukusebenza kahle: I-HPMC inika udaka ukushelela nokuvumelana, okwenza kube lula ukwakha.
C. I-Anti-sag: I-HPMC isiza ukuvimbela udaka ekuwohlokeni noma ekuweleni ezindaweni eziqondile, iqinisekisa ukujiya okufanayo.
d. Ukunamathela: I-HPMC ithuthukisa ukunamathela phakathi kodaka ne-substrate, ikhuthaze ukunamathela kwesikhathi eside nokuqina.
e. Ukumelana nokuqhekeka: I-HPMC ithuthukisa ukuguquguquka namandla okubopha kodaka futhi yehlisa ubungozi bokuqhekeka.
5. Inqubo yokuhlanganisa:
a. Indlela yokumanzisa ngaphambilini:
Mmanzise ngaphambili i-HPMC esitsheni esihlanzekile cishe esino-70-80% wawo wonke amanzi axutshiwe.
Hlanganisa kahle izithako ezomile (usimende, i-aggregate, imicu) ku-mixer.
Kancane kancane engeza isisombululo se-HPMC esifakwe ngaphambili ngenkathi ushukumisa kuze kufinyelelwe ukuvumelana okufunayo.
Lungisa okuqukethwe kwamanzi njengoba kudingeka ukuze kuzuzwe ukusebenza okufunayo.
b. Indlela yokuxuba okomile:
Ingxube eyomile i-HPMC enezithako ezomile (usimende, ama-aggregates, amafayibha) ku-mixer.
Kancane kancane engeza amanzi ngenkathi ugqugquzela kuze kufinyelelwe ukuvumelana okufunayo.
Xuba kahle ukuze uqinisekise ngokulinganayo ukusatshalaliswa kwe-HPMC nezinye izithako.
C. Ukuhlola Ukuvumelana: Ukuhlola ukuhambisana ne-HPMC nezinye izithasiselo ukuze kuqinisekiswe ukusebenzisana okufanele nokusebenza.
6. Ubuchwepheshe bokusebenza:
a. Ukulungiswa kwe-substrate: Qinisekisa ukuthi i-substrate ihlanzekile, yomile futhi ayinakho ukungcola.
b. Isicelo sokuqala:
Gcoba i-EIFS Mortar Primer endaweni engaphansi usebenzisa itrowel noma izinto zokufutha.
Qinisekisa ukuthi ubukhulu bulingana futhi ukumbozwa kuhle, ikakhulukazi emaphethelweni nasemakhoneni.
Shumeka ibhodi lokufakelwa odakeni olumanzi futhi uvumele isikhathi esanele sokwelapha.
C. Topcoat Isicelo:
Gcoba ijazi le-EIFS lodaka phezu kwe-primer ephulukisiwe usebenzisa i-trowel noma izinto zokufutha.
Ukuma noma ukuqeda izindawo njengoba kuthanda, ukuqikelela ukuzuza ukufana nobuhle.
Yelapha ijazi langaphezulu ngokwezincomo zomkhiqizi ukuze ulivikele esimweni sezulu esibi.
7. Ukulawulwa kwekhwalithi nokuhlola:
a. Ukungaguquguquki: Gada ukuvumelana kodaka kuyo yonke inqubo yokuxuba nokufaka ukuze uqinisekise ukufana.
b. Ukunamathela: Ukuhlolwa kokunamathela kwenziwa ukuze kuhlolwe amandla esibopho phakathi kodaka ne-substrate.
C. Ukusebenziseka: Hlola ukusebenza ngokuhlolwa kokuwa nokubheka ngesikhathi sokwakha.
d. Ukuqina: Yenza ukuhlolwa kokuqina, okuhlanganisa imijikelezo yokuncibilika kweqhwa nokuvimbela amanzi, ukuhlola ukusebenza kwesikhathi eside.
Ukusebenzisa i-HPMC ukwenza udaka lwe-EIFS kunikeza izinzuzo eziningi ngokuya ngokusebenza, ukunamathela, ukumelana ne-sag nokuqina. Ngokuqonda izakhiwo ze-HPMC nokulandela izindlela ezifanele zokuhlanganisa nokusetyenziswa, osonkontileka bangakwazi ukuzuza ukufakwa kwe-EIFS kwekhwalithi ephezulu okuhlangabezana nezindinganiso zokusebenza futhi kukhuphule ubuhle bokwakha nokuhlala isikhathi eside.
Isikhathi sokuthumela: Feb-23-2024