I-Anti-dispersion isalathiso esibalulekileyo sobugcisa ukulinganisa umgangatho we-anti-dispersion agent.IHydroxypropyl methylcellulose yikhompawundi yepolymer enyibilikayo emanzini, eyaziwa ngokuba yintlaka enyibilikayo emanzini okanye ipolima enyibilikayo emanzini.Yandisa ukuhambelana komxube ngokunyusa i-viscosity yamanzi okuxuba.Yimathiriyeli ye-hydrophilic polymer.Inokunyibilika emanzini ukwenza isisombululo okanye ukusasazwa.Iimvavanyo zibonisa ukuba xa inani le-naphthalene-based-high-efficiency superplasticizer linyuka, ukongezwa kwe-superplasticizer kuya kunciphisa ukuxhathisa ukusasazeka kwe-sand mortar esanda kuxutywa.Oku kungenxa yokuba isinciphisi samanzi esisekwe kwi-naphthalene sisebenza ngokugqithisileyo.Xa umnciphisi wamanzi wongezwa kumdaka, umnciphisi wamanzi uya kujoliswa kumphezulu weengqungquthela zesamente ukwenza umphezulu weengqungquthela zesamente zibe nentlawulo efanayo.Le ngqungquthela yombane yenza iinqununu zesamente Isakhiwo se-flocculation ye-cement sichithwa, kwaye amanzi ahlanganiswe kwisakhiwo akhululwa, okuya kubangela ukulahlekelwa kwenxalenye yesamente.Kwangaxeshanye, kufunyaniswe ukuba ngokunyuka komxholo we-HPMC, ukuxhathisa ukusasazwa kodaka olutsha lwesamente kubangcono kwaye kubengcono.
01. Ukongezwa kwe-HPMC kunempembelelo ecacileyo yokunciphisa umxube wodaka.Ngokunyuka komxholo we-HPMC, ixesha lokumisela lodaka liyandiswa ngokulandelelana.Ngaphantsi komxholo ofanayo we-HPMC, udaka olwenziwe phantsi kwamanzi lukhawuleza kunokuba lusemoyeni Ukubumba kuthatha ixesha elide ukuseta.Olu phawu luluncedo ekumpompeni ikhonkrithi ephantsi kwamanzi.
02. Ukongezwa kwe-arhente yokunciphisa amanzi kuphucula ingxaki yokunyuka kwemfuno yamanzi kwidaka, kodwa idosi yayo kufuneka ilawulwe ngokufanelekileyo, kungenjalo ukuxhathisa ukusasazwa kwamanzi odaka oluxubileyo lwesamente luya kuncitshiswa ngamanye amaxesha.
03. Kukho umehluko omncinci kwisakhiwo phakathi kwesamente yokunamathisela i-samente exutywe kunye ne-HPMC kunye ne-specimen engenanto, kwaye kukho umehluko omncinci kwisakhiwo kunye nobuninzi be-samente ye-sement paste egalelwe emanzini nasemoyeni.Umzekelo owenziwe phantsi kwamanzi kangangeentsuku ezingama-28 ukhephuke kancinci.Isizathu esiphambili kukuba ukongezwa kwe-HPMC kunciphisa kakhulu ilahleko kunye nokusasazwa kwesamente xa ugalela emanzini, kodwa kunciphisa ukubumbana kwelitye lesamente.Kwiprojekthi, phantsi kwemeko yokuqinisekisa isiphumo sokungasasazwa phantsi kwamanzi, umthamo we-HPMC kufuneka uncitshiswe kangangoko kunokwenzeka.
I-HPMC engaphantsi kwamanzi edityanisiweyo yekhonkrithi engasasazwanga isetyenziswa kubunjineli besiseko sebhulorho yendlela ye-expressway, kunye nenqanaba lamandla oyilo yi-C25.Ngokutsho kovavanyo olusisiseko, inani le-samente yi-400kg, i-silica fume edibeneyo yi-25kg / m3, inani elifanelekileyo le-HPMC yi-0.6% yesixa se-samente, umlinganiselo wamanzi-samente ngu-0.42, umlinganiselo wesanti ngu-40%. kunye nemveliso ye-naphthalene-based-high-efficiency water reducer yi-Inani le-samente yi-8%, i-specimen yekhonkrithi emoyeni ngeentsuku ze-28, amandla aphakathi yi-42.6MPa, ikhonkrithi engaphantsi kwamanzi kunye nokuphakama kwe-60mm iintsuku ezingama-28. , umyinge wamandla angama-36.4MPa, umlinganiselo wamandla wekhonkrithi eyenziwe ngamanzi kunye ne-concrete eyenziwe ngomoya 84.8%, umphumo ubaluleke kakhulu.
Ixesha lokuposa: Apr-24-2023