Hydroxypropyl methylcellulose (hpmc)Makamaka amagwiritsa ntchito njira yamadzi osungira, kukulitsa magwiridwe antchito mu simenti, gypsum ndi zinthu zina za ufa. Magwiridwe antchito abwino kwambiri amagetsi amatha kupewa ufa kuti usafooke komanso kuwonongeka chifukwa cha kutaya kwamadzi kwambiri, ndikupangitsa ufa kukhala ndi nthawi yomangayi.
Chitani zinthu zosankhidwa ndi Cemement, ophatikizidwa, ophatikizidwa, matope osunga madzi, omanga, oyenda pamadzi a gypsum amakhala ndi mabowo owoneka bwino komanso mayamwidwe. Cholinga chotumikira kulimba chimayenera kuchepetsedwa ndi kusanjikiza, ndiye kuti, mphamvu yolumikizana pakati pa matope osanjikiza ndi mphamvu ya matope ndi zida zapamwamba.
Cholinga chabwino cha hydractive cha simenti pamtunda ndikuti simenti mankhwala othandizira amamwa madzi limodzi ndi maziko, kulumikizidwa koyenera "ndikupanga mphamvu yofunika kwambiri. Kuthirira mwachindunji pamtunda kumayambitsa kufalikira kwakukulu m'madzi kuyamwa kwa maziko chifukwa cha kusasiyana kwa kutentha, kuthirira nthawi, ndikuthirira kufanana. Maziko ali ndi mayamwidwe ochepa madzi ndipo apitiliza kuyamwa madzi m'matope. Sitsaratimenti hydrade isanachitike, madziwo amalowetsedwa, zomwe zimakhudza simentart hydration ndi kulowa kwa zinthu zopatsa mphamvu mu matrix; Mbali ili ndi mayamwidwe ambiri, ndipo madzi mu matope amayenda pansi. Kuthamanga kwa sing'anga kosachedwa, ndipo ngakhale wolemera kwambiri wamadzi umapangidwa pakati pa matope ndi matrix, omwe amakhudzanso mphamvu ya mgwirizano. Chifukwa chake, kugwiritsa ntchito njira yofananira ya chimake sikungangotha kuthana ndi vuto la madzi othamanga, koma idzakhudzanso mgwirizano pakati pa matope ndi maziko.
Zotsatira za cellulose ether pa compressive ndi kukameta ubweya wa matope a simenti.
Ndi kuwonjezera kwacellulose ether, mphamvu zopsinjika ndi zometa ndi zometa ndi mphamvu, chifukwa cellulose emal ense zimamwa madzi ndikuwonjezera mawonekedwe.
Kugwirira ntchito ndi mphamvu yolumikizira kumadalira ngati mawonekedwe pakati pa matope ndi maziko ake akhoza kukhala olumikizidwa bwino komanso nthawi yayitali.
Zinthu zomwe zikukhudza mphamvu zogwirizana ndi izi:
1. Mankhwala osokoneza bongo ndi mtundu wa mawonekedwe a gawo lapansi.
2. Kugwiritsa ntchito njira yosungirako madzi, kuthekera kolowera komanso mphamvu yamatope.
3. Zida zomanga, njira zomangamanga ndi chilengedwe chomanga.
Chifukwa maziko omanga matope ali ndi mayamwidwe ena amadzi, pambuyo pa maziko a madzi atavala matope, ndipo chifukwa champhamvu kwambiri, ndikupangitsa matope kuti asang'ane. Njira yothetsera mavutowa ndikuthirira maziko, koma ndizosatheka kuonetsetsa kuti mazikowo amanyozedwa.
Post Nthawi: Apr-25-2024