I-Cellulose Ether izokwandisa isikhathi sokufaka usimende noma i-satar net, ukubambezela ukuthuthukisa isikhathi sokusebenza kwesisekelo sokwenza usimende, kepha futhi kungabambezela inqubekela phambili yokwakha, ikakhulukazi ngezimo zemvelo zokushisa eziphansi zokusebenzisa udaka nokhonkolo.
Ngokuvamile, ukukhuphuka okuqukethwe kwe-cellulose ether, isikhathi eside isikhathi sokusetha sikasimende esifushane nodaka, kanye nokusobala okusobala okubambezele kwe-hydration dynamics. I-Celsulose Ether ingabambezela i-hydration ye-Clinkeral Mineral Phases Triccale Alimate (C3A) kanye ne-tricalcium silicate (C3S) kanye ne-c3s e-hydration kinetics yazo ayifani. I-Cellulose Ether inciphisa ikakhulukazi isilinganiso sokuphendula sama-C3s esigabeni sokusheshisa, ngenkathi uhlelo lwe-C3A-CASO4, luxazulula kakhulu isikhathi sokungeniswa.
Ukuhlolwa okwengeziwe kwakhombisa ukuthi i-cellulose ether ingavimba ukuchithwa kwe-C3A nama-C3S, ukubambezela i-crystallization ye-calcium alikuc alimate kanye ne-calcium hydroxide, futhi unciphise izinga le-csh elingaphezulu kwe-C3s Werer et al. Kutholakale ukuthi izinga lokufaka esikhundleni se-DS kwakuyisici esiyinhloko esithinta i-Cement Hydration, kanti ama-DS amancane ayekhona, okusobala kakhulu i-hddration ebambezelekile. Emshinini we-cellulose ether ukubambezela i-hydration yesimende.
Sliva et al. Kukholelwe ukuthi i-cellulose ether yandisa i-viscosity yesisombululo se-pore futhi yaphazamisa izinga lokunyakaza kwe-ion, ngaleyo ndlela kubambezele ama-hyment hydration. Kodwa-ke, uPrapchez et al. Kutholakale ukuthi ubudlelwano phakathi kwe-cellulose ether Delived Cement Hydration kanye noKument Slurry Viscosisity bekungabonakali. Schmitz et al. Kutholakale ukuthi ukuhlakanipha kwe-cellulose ether bekungacishe kube nomthelela kuma-kinetics kasimende we-hydration.
UTapchez uphinde wathola ukuthi i-cellulose ether yasizinza ngaphansi kwezimo ze-alkali kanye ne-hddration yayo ebambezelekile ayikwazanga ukubalwa ukuwohloka kwe-cellulose ether. I-adsorption ingaba yisizathu sangempela se-cellulose ether ukubambezela usimende hydration, izithasiselo eziningi ze-organic zizobe zidwengulwe izinhlayiya zensimbi nemikhiqizo ye-hydration, ngaleyo ndlela zibambezele i-hydration kanye nokuvutha kwe-hydration kanye nokubuyiselwa kukakhonkolo. Pourchcz et al. Kutholakale ukuthi amandla aqine amandla wemikhiqizo ye-hydration kanye ne-cellulose ether, okusobala kakhulu ukubambezeleka.
Ngokuvamile kuzwakala ukuthi ama-molecule we-cellulose ether asetshenziselwa ikakhulukazi ama-hydration imikhiqizo ye-hydration futhi akuvamile ukuthi akhishwe esigabeni se-clinkeral yasekuqaleni.
Isikhathi sePosi: Dec-09-2021