Lapho nje into esuselwa kusonga ingeziwe ngamanzi okuxhumana nge-latex we-towx Izinhlayiya eziqinile zifakwa kwi-gel kanye nezinhlayiya zomoya ongashadi. Njengoba ukusabela kwe-hydration kuqhubeka, imikhiqizo ye-hydration yanda, futhi izinhlayiya ze-polymer kancane kancane zihlangana kuma-pores capillary, zakha ungqimba olugcwele phasi ebusweni bejeli nakwisimo sensimbi engahlali.
Izinhlayiya ezihlanganisiwe ze-polymer kancane kancane zigcwalisa ama-pores, kepha hhayi ngokuphelele emandleni angaphakathi ama-pores. Njengoba amanzi esehliswe futhi yi-hydration noma ukomisa, izinhlayiya ze-polymer ezigcwele eduze kwe-gel naku-pores coalesce zibe yifilimu eqhubekayo, zakha umxube wensimbi ephumayo kanye nokwenza ngcono ukuhlanganiswa kwe-hydrate yemikhiqizo nezinhlanganisela. Ngoba imikhiqizo ye-hydration enama-polymers yakha isendlalelo sesembozo esibonakalayo, kungathinta ukukhula kwamakristalu e-ettringite kanye ne-coarse calcium hydroxide crystals; Futhi ngenxa yokuthi ama-polymers aqophe amafilimu kuma-pores we-interface defeniction zone, impahla esekwe kumasipala we-polymer i-a transition zone i-denser. Amaqembu asebenzayo kuma-molecule athile we-polymer azothuthukisa ukuvumelanisa okuxhumanisa ne-CA2 + ne-A13 + emikhiqizweni ye-Centdy Dydration ukwakha izibopho ezikhethekile zebhuloho, athuthukise ukwakheka kwangaphakathi kwezinto zokwenziwa kokonamba osuselwa kukhulu, futhi anciphise isizukulwane sama-microcracks. Njengoba isakhiwo se-cement gelijemu sikhula, amanzi adliwa futhi izinhlayiya ze-polymer zivalelwa kancane kancane kuma-pores. Njengoba usimende uphinde ukhishwe ngama-hydrate, umswakama kuma-capillary pores wehla, futhi izinhlayiya ze-polymer zihlangana ebusweni bomkhiqizo we-gemende we-gemende / inhlanganisela ye-congregate, ngaleyo ndlela wakhe ungqimba olulodwa olugcwele olugcwele ngama-pores amakhulu agcwele nge izinhlayiya ezinamathelayo noma ezinamathela ezinamathela.
Iqhaza le-satex evuselelayo ye-latex e-motar lilawulwa yizinqubo ezimbili ze-Conment Hydration kanye ne-polymer ifilimu. Ukwakheka kohlelo lwezinhlanganisela lwe-Cement Hydration kanye ne-polymer filmul formation kuqediwe ngezinyathelo ezi-4:
(1) Ngemuva kokuthi i-powder evuselelayo ye-latex ixutshwe nosimende kasimende, ihlakazeka ngokulinganayo ohlelweni;
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(3) Izinhlayiya ze-polymer zakha ungqimba oluqinile futhi oluhlangene;
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I-emulsion ehlakazekile ye-latex ye-latex ye-latex ingakha ifilimu eqhubekayo ye-late-infoluble (i-polymer network) ngemuva kokomiswa, futhi lo mzimba wenethiwekhi ophansi we-modulus polymer uthuthuka ukusebenza kukakhonkolo; Ngasikhathi sinye, kuma-polmer molecule amaqembu athile ama-polar asebekhulile asabela ngamakhemikhali ngemikhiqizo ye-Cement Hydration ukwakha amabhuloho akhethekile, futhi adambise futhi anciphise ukukhiqizwa kwemifantu. Ngemuva kokuthi i-latex ye-latex ye-latex evuselelayo yengezwa, izinga lokuqala i-hydration likasimende lincipha, futhi ifilimu le-polymer lingakwazi ukusonga ngokwengeziwe noma lisonge ngokuphelele izinhlayiya zensimbi, ukuze usimende lungathuthukiswa ngokuphelele futhi izikhala zalo ezahlukahlukene zingathuthukiswa.
I-Platex evuselelayo ye-latex idlala indima ebalulekile njengesengezo sodaka lokwakha. Ukungeza i-latex ye-latex evuselelayo ku-soturnar kungalungiselela imikhiqizo ehlukahlukene yodumbu enjenge-tile anamathela, udaka lokufaka okushisayo, udaka lokuhlobisa, udaka lokuhlobisa, ukulungiswa kosuku lokubopha uphawu kanye nesicelo se-application ukusebenza kodaka lokwakha. Vele, kunezinkinga eziguqukayo phakathi komugqa we-latex evuselelayo kanye nosimende, ama-admixture kanye nama-admixtures, okufanele anakwe ngokwanele kwizicelo ezithile.
Isikhathi sePosi: Mar-14-2023