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 zimbozwa i-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.