I-Hydroxypropyl methylcellulose (HPMC) idlala indima yokugcina amanzi, ukuqina kanye nokuthuthukisa ukusebenza kokwakhiwa kusimende, i-gypsum kanye nezinye izinto zempuphu. Ukusebenza okuhle kakhulu kokugcina amanzi kungavimbela ngempumelelo impuphu ukuthi yome futhi iqhekeke ngenxa yokulahlekelwa amanzi ngokweqile, futhi kwenze impuphu ibe nesikhathi eside sokwakha.
Khetha izinto zokwakha ezisebenzisa ukhonkolo, ama-aggregate, ama-aggregate, ama-ejenti okugcina amanzi, ama-binder, ama-modifiers okusebenza kokwakha, njll. Isibonelo, ukhonkolo olusekelwe ku-gypsum lusebenza kangcono kune-samente olusekelwe ku-samente esimweni esomile, kodwa ukusebenza kwalo kokhonkolo kwehla ngokushesha ngaphansi kwesimo sokumuncwa komswakama kanye nokumuncwa kwamanzi. Amandla okubopha okuqondiwe kokhonkolo olusebenzisa ukhonkolo kufanele ancishiswe ungqimba ngengqimba, okungukuthi, amandla okubopha phakathi kwengqimba eyisisekelo kanye ne-ejenti yokwelapha i-interface ≥ amandla okubopha phakathi kokhonkolo olusebenzisa ukhonkolo olusebenzisa ukhonkolo kanye ne-ejenti yokwelapha i-interface ≥ isibopho phakathi kokhonkolo olusebenzisa ukhonkolo olusebenzisa ukhonkolo kanye ne-surface layer sturdy Amandla ≥ amandla okubopha phakathi kokhonkolo olusebenzisa ukhonkolo kanye ne-putty material.
Umgomo ofanele wokufaka amanzi esisekelweni ukuthi umkhiqizo wokufaka amanzi esisekelweni umunce amanzi kanye nesisekelo, ungene esisekelweni, futhi wakhe "uxhumano oluyisihluthulelo" olusebenzayo nesisekelo, ukuze kufezwe amandla esibopho adingekayo. Ukunisela ngqo ebusweni besisekelo kuzobangela ukuhlakazeka okukhulu ekumunceni kwamanzi esisekelweni ngenxa yokwehluka kwezinga lokushisa, isikhathi sokunisela, kanye nokufana kokunisela. Isisekelo sinokumunca kwamanzi okuncane futhi sizoqhubeka nokumunca amanzi esisekelweni. Ngaphambi kokuba kuqhubeke ukumunca amanzi esisekelweni, amanzi ayamuncwa, okuthinta ukumunca kwesimende kanye nokungena kwemikhiqizo yokumunca amanzi esisekelweni; isisekelo sinokumunca kwamanzi okukhulu, futhi amanzi esisekelweni agelezela esisekelweni. Ijubane lokufuduka eliphakathi nendawo lihamba kancane, futhi ngisho nengqimba ecebile ngamanzi iyakhiwa phakathi kwesimende ne-matrix, okuthinta futhi amandla esibopho. Ngakho-ke, ukusebenzisa indlela evamile yokunisela esisekelweni ngeke kuhluleke nje kuphela ukuxazulula inkinga yokumunca amanzi amaningi esisekelweni sodonga, kodwa kuzothinta amandla esibopho phakathi kwesimende nesisekelo, okuholela ekuqhekekeni nasekuqhekekeni.
Umphumela we-cellulose ether emandleni okucindezela kanye nokusika kwe-samente mortar.
Ngokungezwa kwe-cellulose ether, amandla okucindezela kanye nokugunda ayancipha, ngoba i-cellulose ether imunca amanzi futhi yandisa ukwakheka kwama-porosity.
Ukusebenza kokubopha kanye namandla okubopha kuncike ekutheni ukuxhumana phakathi kodaka nezinto eziyisisekelo kungasebenza kahle futhi ngempumelelo "ukuxhumana okubalulekile" isikhathi eside.
Izici ezithinta amandla esibopho zifaka:
1. Izici zokumuncwa kwamanzi kanye nokuqina kwe-substrate interface.
2. Amandla okugcina amanzi, amandla okungena kanye namandla esakhiwo se-mortar.
3. Amathuluzi okwakha, izindlela zokwakha kanye nendawo yokwakha.
Ngenxa yokuthi ungqimba lwesisekelo lokwakhiwa kodaka lunokumuncwa kwamanzi okuthile, ngemva kokuba ungqimba lwesisekelo lumuncwe amanzi odaka, ukwakheka kodaka kuzowohloka, futhi ezimweni ezimbi kakhulu, izinto eziqinisa udaka odaka ngeke zigcwaliswe ngamanzi ngokugcwele, okuholela ekubeni namandla, okukhethekile. Isizathu ukuthi amandla okuxhumana phakathi kodaka oluqinile kanye nodaka lwesisekelo aba phansi, okwenza ukuthi udaka luqhekeke futhi luwe. Isixazululo sendabuko salezi zinkinga ukunisela isisekelo, kodwa akunakwenzeka ukuqinisekisa ukuthi isisekelo simanziswe ngokulinganayo.
Isikhathi sokuthunyelwe: Meyi-06-2023