Makina a cellulose ether extament cement hydration

Te cellulose nthawi zambiri amagwiritsidwa ntchito popanga zomangamanga monga zowonjezera zomwe zimapangidwa ndi simenti chifukwa cha kuthekera kwawo kuwongolera chiwerewere, kusintha mphamvu, komanso kulimbikitsa magwiridwe antchito. Kugwiritsa ntchito kamodzi kofunikira kwa cellulose kuli pochedwetsa simenti hydration. Kuchedwa kumeneku hydration ndikofunikira m'magawo omwe nthawi yayitali amafunikira, monga mu nyengo yotentha kapena poyendetsa konkriti patali. Kumvetsetsa njira yomwe imapangitsa kuti cellulose ikhale yovuta kuti muthe kugwiritsa ntchito ntchito zawo pomanga.

Mafala Akutoma Natimenti
Musanatsuke momwe cellulose imachedwetsa, ndikofunikira kuti mumvetsetse njira ya simenti hydrative yokha. Simenti ndi yofunika kwambiri ku konkriti, ndipo mankhwalawa ndiovuta matenda omwe amaphatikizapo kulumikizana kwamadzi ndi simenti tating'ono, kumapangitsa kupangidwa kwa zinthu zamphamvu komanso zolimba.

Madzi akawonjezeredwa ku simenti, zimachitika m'njira zosiyanasiyana, makamaka zokhudzana ndi hydration za mankhwala a simenti (c3s), ma tchecalcium alumino-almitaf (c4af (c4af (c4af (c4af (c4af (c4af (c4af) Izi zimabweretsa calcium silemium shuga (CSS) gel, calcium hydroxide (Ch), ndi zina, zomwe zimathandizira kulimba ndi kukhazikika kwa konkriti.

Udindo wa cellulose etrese pakuchedwa hydration
Te cellulose, monga methyl cellulose (Mc), hydroxethyl celyllulose (hpmcc), nthawi zambiri amagwiritsidwa ntchito ngati ma poityrars a simenti. Izi zowonjezera izi zimalumikizana ndi madzi ndi simenti tinthu tambiri, ndikupanga filimu yoteteza mozungulira mitengo ya simenti. Kuchedwa kwa simenti hydration chifukwa cha cellulose eder atha kutchulidwa pamakina angapo:

Kusungidwa kwamadzi: cellulose edye kumakhala ndi vuto lalikulu lamadzi chifukwa cha hydrophilic mtundu wawo wa hydrophilic komanso kuthekera kupanga mayankho a viscous. Mukawonjezeredwa ku ma centilery enectures, amatha kusunga madzi ambiri, kuchepetsa kupezeka kwa madzi kwa ma simenti hydration. Kuthekera kwa madzi kumeneku kumachepetsa ntchito mankhwala hydration, ndikukweza nthawi ya konkriti.

Zotchinga zakuthupi: cellose eders amapanga chotchinga chakuthupi chozungulira tinthu tating'onoting'ono, cholepheretsa kufikira madzi mpaka pamtunda wa simenti. Cholepheretsa chimachepetsa kuchuluka kwa kulowetsa kwamadzi mu tinthu tating'onoting'ono, potero amachepetsa mphamvu hydration. Zotsatira zake, njira zonse zothandizirana zimachedwetsedwa, zimapangitsa kuti nthawi yayitali itafika.

Pamtunda Adsorpse: Cellulose eds amatha ADSORB imatha kukhala pamwamba pa simenti tinthu tating'onoting'ono monga momwe ma hydrogen amagwiritsira ntchito mphamvu zankhondo. Adsorption iyi imachepetsa dera lomwe limapezeka pamtunda wamadzi-simenti, cholepheretsa zowonjezera ndi zolimbitsa thupi za hydrate. Zotsatira zake, kuchedwa kwa simenti hmenti kumachitika.

Mogwirizana ndi calcium nes: cellulose eders amathanso kulumikizana ndi calcium ion yotulutsidwa mu simenti hydration. Izi zimatha kuyambitsa mapangidwe kapena mpweya wa calcium mchere, womwe umachepetsa kupezeka kwa calcium ma ions hydration zimachitika. Kusokonezedwa uku ndi ma ion kusinthana kwa ion kumapangitsa kuti pasachedwe ndi simenti hydration.

Zinthu zimapangitsa kuchepetsedwa ku hydration
Pali zinthu zingapo zomwe zimapangitsa kuti ma cellulose athe kuchedwetsa ma cement hydration:

Lembani ndi kukhazikika kwa cellulose et: mitundu yosiyanasiyana ya cellose etrase exoner digiri yosiyanasiyana yazengereza za simenti hmenti. Kuphatikiza apo, kuchuluka kwa cellulose etra mu ce mu site yosakaniza kumapangitsa kuti pakhale gawo lofunikira posankha kukula. Kukhazikika kwakukulu nthawi zambiri kumabweretsa kuchedwa kwambiri kutchulidwa.

Kukula kwa tinthu ndi kugawa: kukula kwa tinthu tagawidwe ndi kugawa kwa cellulose eders zimakhudza kubalaku kwa simenti phala. Tinthu tating'onoting'ono timakhala kuti zimabalalikirana kwambiri, ndikupanga filimu yowonera yolimba mozungulira simenti tinthu tambiri.

Chinyezi ndi chinyezi chowerengeka: nyengo yachilengedwe, monga kutentha ndi chinyezi chowerengeka, zimapangitsa kuti madzi athetse madzi amtundu wa simenti. Kutentha kwambiri komanso kutsika kwa chiwongolero chotsika kumathandizira njira zonse ziwiri, pomwe kutentha kochepa komanso chinyezi chapamwamba komanso chinyezi chapamwamba kwambiri kumakondera matenda a cydicle oyambitsidwa ndi celloucase yoyambitsidwa ndi cellolite.

Sakanizani molingana ndi kapangidwe kake: kuphatikiza kwathunthu osakaniza konkriti, kuphatikizapo malo a simenti, kuphatikiza katundu wina, ndikupangitsa kuti ma adlelose athetseretse. Kutha Kusankha Kusakaniza ndikofunikira kuti mukwaniritse zomwe mukufuna.

Cellulose amachepetsa simenti hydration kudzera pamachitidwe osiyanasiyana, kuphatikizapo kusungidwa kwamadzi, kapangidwe ka zotchinga zakuthupi, tossorption, ndi kuyanjana ndi ma calcium anyezi. Izi zowonjezerazi zimagwira ntchito yofunika kwambiri pakuwongolera nthawi yokhazikika komanso kugwirira ntchito kwazinthu zomwe zimakhazikitsidwa ndi simenti, makamaka pazomwe zimagwiritsidwa ntchito nthawi zomwe zimafunikira. Kumvetsetsa njira zakuchedwa mu hydration chifukwa cha cellulose edelose kumatanthauza kugwiritsidwa ntchito kothandiza komanso kukula kwa mapangidwe apamwamba.