1. Udaka oluxutyiweyo olumanzi: udaka oluxutyiweyo luhlobo lwesamente, i-aggregate encinci, umxube kunye namanzi, kwaye ngokweempawu zezinto ezahlukeneyo, ngokwesilinganiso esithile, emva kokuba ilinganiswe kwisikhululo sokuxuba, ixutywe, ithuthwe iye kwindawo apho ilori isetyenziswa khona, kwaye ingeniswe kwindawo ekhethekileyo. Gcina isitya kwaye usebenzise umxube omanzi ogqityiweyo ngexesha elichaziweyo.
2. I-Hydroxypropyl methyl cellulose isetyenziswa njengesixhobo sokugcina amanzi kwi-samente mortar kunye ne-retarder yokupompa i-mortar. Kwimeko ye-gypsum njenge-binder ukuphucula ukusetyenziswa kwayo kunye nokwandisa ixesha lokusebenza, ukugcinwa kwamanzi kwe-HPMC kuthintela ukuqhekeka kwe-slurry ngokukhawuleza emva kokoma, kwaye kuphucula amandla emva kokuqina. Ukugcinwa kwamanzi luphawu olubalulekileyo lwe-hydroxypropyl methyl cellulose HPMC, kwaye ikwayinkxalabo yabavelisi abaninzi be-wet-mix mortar basekhaya. Izinto ezichaphazela isiphumo sokugcina amanzi kwi-wet-mix mortar ziquka ubungakanani be-HPMC eyongeziweyo, i-viscosity ye-HPMC, ubuncinci bee-particles kunye nobushushu bendawo yokusetyenziswa.
3. Imisebenzi ephambili ye-hydroxypropyl methyl celluloseI-HPMCKwi-mortar exutywe ngamanzi, ikakhulu kukho iinkalo ezintathu, enye inamandla okugcina amanzi, enye yimpembelelo ekuhambelaneni nasekuqineni kwe-thixotropy ye-mortar exutywe ngamanzi, kwaye eyesithathu kukunxibelelana nesamente. Ukugcinwa kwamanzi kwe-cellulose ether kuxhomekeke kwisantya sokufunxwa kwamanzi kwisiseko, ukwakheka kwe-mortar, ubukhulu bomaleko we-mortar, imfuno yamanzi ye-mortar, kunye nexesha lokuseta. Okukhona i-hydroxypropyl methyl cellulose iphezulu, kokukhona i-retention yamanzi ingcono.
4. Izinto ezichaphazela ukugcinwa kwamanzi kwi-mortar exutywe ngamanzi ziquka i-cellulose ether viscosity, ubungakanani bokongeza, ubungakanani bamasuntswana kunye nobushushu. Okukhona i-viscosity ye-cellulose ether inkulu, kokukhona i-viscosity ingcono. I-Viscosity yiparameter ebalulekileyo yokusebenza kwe-HPMC. Kwimveliso efanayo, iziphumo zokusebenzisa iindlela ezahlukeneyo zokulinganisa i-viscosity zahlukile kakhulu, kwaye ezinye zide zibe nomsantsa ophindwe kabini. Ke ngoko, uthelekiso lwe-viscosity kufuneka lwenziwe ngendlela efanayo yovavanyo, kubandakanya ubushushu, i-spindle, njl.
5. Ngokubanzi, okukhona i-viscosity iphezulu, kokukhona ukugcinwa kwamanzi kuyanda. Nangona kunjalo, okukhona i-viscosity iphezulu, kokukhona ubunzima be-molecular ye-HPMC buphakama kwaye ukunyibilika kwe-HPMC kuphantsi, oku kunempembelelo embi kumandla kunye nokusebenza kolwakhiwo lwe-mortar. Okukhona i-viscosity iphezulu, kokukhona isiphumo sokutyeba kwe-mortar sibonakala ngakumbi, kodwa asihambelani ngokuthe ngqo. Okukhona i-viscosity iphezulu, kokukhona i-mortar imanzi ixinene, kokukhona ukusebenza kolwakhiwo kubhetele, ukusebenza kwe-viscous scraper kuphezulu kwaye kuphezulu ukunamathela kwi-substrate. Nangona kunjalo, amandla okwakhiwa okwandisiweyo kwe-mortar emanzi ngokwayo awancedi. Ezi zakhiwo zimbini azinawo amandla acacileyo okulwa nokuhla. Ngokwahlukileyo koko, i-viscosity ethile ephakathi nephantsi kodwa i-hydroxypropyl methyl cellulose eguquliweyo inokusebenza okuhle kakhulu ekuphuculeni amandla olwakhiwo lwe-mortar emanzi.
6. Okukhona isixa esikhulu se-cellulose ether esongezwa kwi-HPMC wet mortar, kokukhona ukugcinwa kwamanzi kusiba ngcono, kwaye okukhona i-viscosity iphezulu, kokukhona ukugcinwa kwamanzi kusiba ngcono. Ukuqina kwakhona sisalathiso esibalulekileyo sokusebenza kwe-hydroxypropyl methyl cellulose.
7. Ukuqina kwe-hydroxypropyl methyl cellulose nako kunempembelelo ethile ekugcinweni kwamanzi. Ngokubanzi, kwi-hydroxypropyl methyl cellulose ene-viscosity efanayo kunye nokuqina okwahlukileyo, okukhona ubunzima buncinci, kokukhona ukuqina kuncinci, kokukhona ukugcinwa kwamanzi kuncinci phantsi komlinganiselo ofanayo wokongeza. Okukhona kungcono.
8. Kwisigqubuthelo esixutywe ngamanzi, ubungakanani bokongeza i-cellulose ether HPMC buphantsi kakhulu, kodwa bunokuphucula kakhulu ukusebenza kolwakhiwo lwesigqubuthelo esimanzi, kwaye sisongezo esiphambili esichaphazela kakhulu ukusebenza kwesigqubuthelo. Ukukhetha okufanelekileyo kwe-hydroxypropyl methyl cellulose, ukusebenza kwesigqubuthelo esimanzi kuyachaphazeleka kakhulu.
Ixesha leposi: Epreli-28-2024