I-Hydroxypropyl methylcellulose (HPMC)Idlala indima enkulu yokugcina amanzi, ukuqinisa nokuphucula ukusebenza kolwakhiwo kwisamente, igypsum kunye nezinye izinto zepowder. Ukusebenza kakuhle kokugcinwa kwamanzi kunokuthintela ngempumelelo umgubo ukuba wome kwaye uqhekeke ngenxa yokulahleka kwamanzi amaninzi, kwaye kwenze umgubo ube nexesha elide lokwakha.
Khetha izinto ezisetyenziswa ngesamente, ii-aggregates, ii-aggregates, ii-arhente zokugcina amanzi, ii-binders, ii-modifiers zokusebenza kolwakhiwo, njl. Umzekelo, i-mortrail esekelwe kwi-gypsum inokusebenza okungcono kwe-bonding kune-mortrail esekelwe kwisamente kwimeko eyomileyo, kodwa ukusebenza kwayo kwe-bonding kwehla ngokukhawuleza phantsi kwemeko yokufunxwa komswakama kunye nokufunxwa kwamanzi. Amandla okujolisa kwi-plastering mortar kufuneka ancitshiswe umaleko ngomnyeleko, oko kukuthi, amandla okufunxwa phakathi komaleko wesiseko kunye ne-arhente yonyango lwe-interface ≥ amandla okufunxwa phakathi komaleko wesiseko kunye ne-arhente yonyango lwe-interface ≥ i-bonding phakathi komaleko wesiseko kunye ne-mortar ye-surface layer Amandla ≥ amandla okufunxwa phakathi komaleko we-surface mortar kunye nezinto ze-putty.
Injongo efanelekileyo yokufunxa amanzi kwisamente kwisiseko kukuba imveliso yokufunxa amanzi kwisamente ifunxa amanzi kunye nesiseko, ingene kwisiseko, kwaye yenze "unxibelelwano oluphambili" olusebenzayo nesiseko, ukuze kufezekiswe amandla ebhondi afunekayo. Ukunkcenkceshela ngqo kumphezulu wesiseko kuya kubangela ukusasazeka okukhulu ekufunxeni kwamanzi kwisiseko ngenxa yokwahluka kobushushu, ixesha lokunkcenkceshela, kunye nokufana kokunkcenkceshela. Isiseko sinofunxa amanzi amancinci kwaye siya kuqhubeka nokufunxa amanzi kwisamente. Ngaphambi kokuba kuqhubeke ukufunxa amanzi kwisamente, amanzi ayafunxwa, nto leyo echaphazela ukufunxa kwesamente kunye nokungena kweemveliso zokufunxa amanzi kwi-matrix; isiseko sinofunxa amanzi amaninzi, kwaye amanzi kwisamente ageleza kwisiseko. Isantya sokufuduka esiphakathi sihamba kancinci, kwaye nomaleko otyebileyo ngamanzi wenziwa phakathi kwesamente kunye ne-matrix, nto leyo echaphazela namandla ebhondi. Ke ngoko, ukusebenzisa indlela eqhelekileyo yokufunxa amanzi kwisiseko akuyi kusilela nje ekusombululeni ngempumelelo ingxaki yokufunxa amanzi amaninzi kwisiseko sodonga, kodwa kuya kuchaphazela amandla ebhondi phakathi kwesamente kunye nesiseko, okubangela ukuqhekeka nokuqhekeka.
Impembelelo ye-cellulose ether kumandla okuxinzelela kunye nokucheba kwesamente.
Ngokongezai-cellulose ether, amandla okucinezela kunye nokucheba ayancipha, kuba i-cellulose ether ifunxa amanzi kwaye yonyusa i-porosity.
Ukusebenza kwe-bonding kunye namandla e-bonding kuxhomekeke ekubeni unxibelelwano phakathi kwe-mortar kunye nezinto ezisisiseko lunokuphunyezwa ngokuzinzileyo nangokufanelekileyo "unxibelelwano lwe-key" ixesha elide.
Izinto ezichaphazela amandla ebhondi ziquka:
1. Iimpawu zokufunxa amanzi kunye noburhabaxa bomphezulu we-substrate.
2. Umthamo wokugcina amanzi, umthamo wokungena kunye namandla olwakhiwo lwesamente.
3. Izixhobo zokwakha, iindlela zokwakha kunye nendawo yokwakha.
Ngenxa yokuba umaleko osisiseko wokwakha udaka unokufunxwa kwamanzi okuthile, emva kokuba umaleko osisiseko ufunxwa amanzi kudaka, ukwakheka kodaka kuya kuba mandundu, kwaye kwiimeko ezinzima, izinto eziqinisa isamente kudaka aziyi kuba namanzi apheleleyo, nto leyo ebangela amandla, akhethekileyo. Isizathu kukuba amandla okudibana phakathi komaleko oqinileyo kunye nomaleko osisiseko aya ehla, nto leyo ebangela ukuba udaka luqhekeke luze luwe. Isisombululo sendabuko kwezi ngxaki kukunkcenkceshela isiseko, kodwa akunakwenzeka ukuqinisekisa ukuba isiseko simanziswe ngokulinganayo.
Ixesha leposi: Epreli-25-2024