Yenza udaka olusha oluqukethe ukugcinwa kwamanzi okuhle:

Cement hydration inqubo inqubo kuqhathaniswa kancane, ezifana usimende abakwazi ukuxhumana namanzi isikhathi eside, usimende ngeke bakwazi ukuqhubeka hydration, ngaleyo ndlela kuthinte ukuthuthukiswa amandla kamuva. I-polymer modified mortar inamandla angaphezu kwenani elijwayelekile, isizathu siwukuthii-polymer powder ehlakazeka kabushakuthuthukisa amandla okugcina amanzi, ukuze amandla kamuva kasimende ande. Okwesibili, ukwakheka kwesigaba esincane se-polymer odakeni, ukuthuthukisa amandla esibopho.

Thuthukisa ukusebenza kokwakhiwa kodaka olusha:

Ngemva kokwengeza impushana ye-polymer ehlakazeka kabusha odakeni olomile oluxubile, ukusebenza kodaka kuba ngcono kakhulu, okubangelwa ikakhulukazi izizathu ezilandelayo: A. Lapho uhlanganisa impushana ye-polymer ehlakazeka kabusha nodaka, ngoba izinhlayiya ze-polymer ezihlakazeka kabusha ze-polymer zimbozwa nge-colloid evikelayo encibilika emanzini. , isendlalelo sokumboza singavimbela ukuhlangana okungenakuhlehliswa phakathi kwezinhlayiya ze-polymer ukuze kube nomphumela wokugcoba phakathi kwezinhlayiya, izinhlayiya ze-polymer zingahlakazwa ngokulinganayo ngesisindo se-cement slurry, Lezi zinhlayiya ezihlakazekile, njengama-ball bearings, zingenza izingxenye zodaka zigeleze ngokuhlukana futhi zithuthukise ukusebenza kodaka. B. Impushana ye-polymer ehlakazeka kabusha ngokwayo iqukethe umphumela othile wokungenisa umoya, impushana ye-polymer ehlakazeka kabusha emoyeni wokungenisa umoya kufanele inikeze ukuminyana kodaka, ukuze udaka lube nokusebenza okuhle kokwakhiwa. Ngaphezu kwalokho, ukuba khona kwamabhamuza amancane nakho kudlala indima enyakazayo engxubeni ukuze kuthuthukiswe ukusebenza kwengxube.

I-polymer powder ehlakazeka kabushaukuthuthukisa ukuguquguquka nokumelana nokuqhekeka kodaka:

Ngemvai-polymer powder ehlakazeka kabushayengezwa odakeni, isilinganiso sokucindezelwa kwe-mortar kanye ne-tensile ratio sithuthukisiwe kakhulu, okubonisa ukuthi i-mortar brittleness iyancipha kakhulu, ukuqina kuthuthukiswa kakhulu, ukuze ukumelana nokuqhekeka kodaka kuthuthukiswe.i-polymer powder ehlakazeka kabushaefilimini eqeda amanzi ngodaka, hhayi nje ukugcwalisa ukushiyeka kanye nezimbotshana etsheni likasimende, kodwa futhi emikhiqizweni ye-cementhydration kanye ne-gluing ehlanganisiwe ukwenza inethiwekhi ye-polymer interpenetrating, ngoba i-modulus nokunwebeka yefilimu ye-polymer iphansi kunaleyo yodaka, ngakho-ke ukuqina kodaka. kuncishisiwe. Ukuguquguquka kodaka kukhulisa umkhawulo omkhulu wokuguqulwa kodaka lapho kulimala, futhi amandla adingwa yisici kanye nokusabalalisa kwe-micro-crack amuncwa kakhulu, ukuze udaka lukwazi ukuthwala ukucindezeleka okukhulu ngaphambi kokwehluleka. Ngaphezu kwalokho, ifilimu ye-polymer iqukethe umshini wokuzelula, futhi ifilimu ye-polymer yakha uhlaka lwamathambo oluqinile odakeni lwe-hydrated usimende, oluqukethe umphumela ohlangene onyakazayo, ukuqinisekisa ukunwebeka nokuqina kohlaka lwamathambo oluqinile. Kukhona ama-pores ebusweni befilimu ye-polymer eyakhiwe phezu kwezinhlayiya zodaka, futhi ama-pores agcwaliswa ngodaka, okunciphisa ukuhlushwa kokucindezeleka futhi akhiqize ukuphumula ngaphandle kokulimala ngaphansi kwesenzo samandla angaphandle. Ukuba khona kokuguquguquka okuphezulu kanye nendawo ephezulu ye-polymer enwebekayo nakho kuthuthukisa ukuguquguquka nokunwebeka kodaka.