Ukwengeza u-2% kuya ku-3% wempushana ye-latex ehlakazeka kabusha kungathuthukisa kakhulu ukumelana nokugqokwa kodaka oluzilinganisa, olungahlangabezana nokumelana nokugqoka okungu-28d ≤ 0.59 ebalulwe ezingeni. I-polymer ihlakazeka odakeni bese yenza ifilimu, igcwalise izimbotshana ze-slurry futhi ixhumane nemikhiqizo ye-cement hydration ukuze yakhe isakhiwo senethiwekhi ye-three-dimensional, okwenza ukwakheka kodaka kuhlanganiswe kakhudlwana. Ifilimu ye-polymer eguquguqukayo isiza ukukhulula ukucindezeleka kwangaphakathi kodaka, inciphisa ukuhlushwa kokucindezeleka, futhi inciphisa ukukhiqizwa kwama-micro-cracks, futhi le filimu ye-polymer ayidlali indima ye-hydrophobic kuphela kodwa futhi ayivimbeli i-capillary, ukuze izinto ezibonakalayo. ine-hydrophobicity enhle nokuphefumula. Ngasikhathi sinye, ngenxa yomphumela wokuvala obangelwa ifilimu ye-polymer, ukungakwazi ukungena emanzini, ukumelana namakhemikhali, ukumelana nokuncibilika kweqhwa, nokuqina kuthuthukiswa kakhulu, futhi amandla okugoba, ukumelana nokuqhekeka, amandla okunamathela, nokunwebeka kwensimbi. udaka luyathuthukiswa. Futhi ukuqina, futhi ekugcineni kungagwema ukuncipha kokuqhekeka kodaka.
Ukuhlola kuthole ukuthi uketshezi lokuqala lwe-gypsum-based self-leveling mortar lukhuphuka kuqala bese lwehla ngokunyuka kwenani le-latex powder. Isizathu siwukuthi i-latex powder ine-viscosity ethile emanzini ancibilikile. Ikhono lokumiswa le-slurry ku-filler liyathuthukiswa, elizuzisa ukugeleza kwe-slurry; lapho inani le-latex powder liqhubeka landa, ukwanda kwe-viscosity ye-slurry kuholela ekwandeni kwe-viscosity ye-slurry, futhi i-fluidity ibonisa umkhuba ophansi. Inani le-latex powder alinawo umthelela ku-20-min fluidity of the mortar. Njengesibophezelo sezinto eziphilayo, i-latex powder incike ekuhwamukeni kwamanzi ku-slurry, futhi ifilimu yakha amandla esibopho, futhi isisekelo se-gypsum siyazilinganisa esimweni esomile. Amanzi odaka ayahwamuka, futhi impushana ye-latex ingakha ifilimu eqhubekayo, enamandla okuhlangana okuhle. Amandla omile we-gypsum-based self-leveling mortar anda ngokunyuka kokuqukethwe kwe-latex powder. Odakeni lokuzilinganisa olusekelwe ku-gypsum ngaphandle kwempushana ye-latex, kunenani elikhulu lamakristalu e-gypsum amise okwenduku kanye ne-columnar dihydrate kanye namakristalu e-dihydrate dihydrate gypsum angajwayelekile naphakathi kwamakristalu e-dihydrate gypsum kanye nezihlungi. Qoqa ndawonye ukuze wenze udaka oluzilinganisa olusekelwe ku-gypsum lukhiqize amandla, kanye nodaka oluzilinganisa olusekelwe e-gypsum oluxutshwe nempushana ye-latex ehlakazeka kabusha, impushana ye-latex yenza uxhumano lwe-filamentary odakeni oluzilinganisa olusekelwe ku-gypsum, kanye ne-dihydrate. amakristalu e-gypsum nama-fillers, amakristalu Ibhuloho le-organic lakhiwa phakathi kwekristalu ne-dihydrate gypsum crystal, futhi ifilimu ye-organic kwakheka ku-dihydrate gypsum crystal ukugoqa nokuxhuma izingxenye ezigqagqene phakathi kwamakristalu e-dihydrate gypsum, ngaleyo ndlela kwandise ukuhlangana nokuhlangana. we-gypsum-based self-leveling mortar kanye nokwenza ngcono amandla e-gypsum-based self-leveling mortar. Ukwakhiwa kokubopha okusebenzayo phakathi kwezigcwalisi kuthuthukisa ukuhlangana phakathi kwamakristalu e-dihydrate gypsum kanye nezigcwalisi, ngaleyo ndlela kuthuthukisa amandla ebhondi odaka lokuzilinganisa olusekelwe ku-gypsum ngokukhulu kakhulu.
Isikhathi sokuthumela: Apr-10-2023