Tsiku Lotumiza: 6, Meyi, 2024
Magwero a matope ndi osiyana, ndipo zigawo zake zimakhalanso zosiyana. Matope a mchenga ndi miyala ya konkire amagawidwa m’magulu atatu: ufa wa laimu, dongo, ndi calcium carbonate. Pakati pawo, ufa wamwala ndi tinthu tating'onoting'ono tating'ono tating'ono tating'onoting'ono tochepera 75 μm. Ndi thanthwe lofanana ndi mchenga wopangidwa ndipo lili ndi mchere womwewo. Chigawo chachikulu ndi CaCO3, yomwe ndi gawo la mchenga wopangidwa.
(1) Kafukufuku pa mfundo yogwirira ntchito ya ufa wamatope ndi polycarboxylic acid yochepetsera madzi:
Nthawi zambiri amakhulupirira kuti chifukwa chachikulu chomwe ufa wamatope umakhudza konkire wothira lignosulfonate ndi naphthalene-based reduction agents of water reduction ndi mpikisano wa adsorption pakati pa ufa wamatope ndi simenti. Palibe kulongosola kogwirizana pa mfundo yogwira ntchito ya ufa wamatope ndi polycarboxylic acid yochepetsera madzi. Akatswiri ena amakhulupirira kuti mfundo yogwira ntchito ya ufa wamatope ndi wochepetsera madzi ndi yofanana ndi simenti. Wothandizira kuchepetsa madzi amadsorbed pamwamba pa simenti kapena ufa wamatope ndi magulu a anionic. Kusiyana kwake ndikuti kuchuluka ndi kuchuluka kwa adsorption of water-reduction agent ndi matope ufa ndi waukulu kwambiri kuposa simenti. Pa nthawi yomweyo, mkulu enieni pamwamba m'dera ndi wosanjikiza dongosolo la dongo mchere komanso kuyamwa madzi ochulukirapo ndi kuchepetsa madzi aulere mu slurry, zomwe zimakhudza mwachindunji ntchito yomanga konkire.
(2) Zotsatira za mchere wosiyanasiyana pa ntchito yochepetsera madzi:
Kafukufuku akuwonetsa kuti matope okhawo omwe ali ndi kukula kwakukulu komanso kuyamwa kwamadzi ndi omwe angakhudze kwambiri magwiridwe antchito komanso pambuyo pake makina a konkriti. Matope adongo wamba pazophatikizika amaphatikiza kaolin, illite ndi montmorillonite. Mtundu womwewo wa mankhwala ochepetsera madzi uli ndi zomverera zosiyana ndi matope amatope omwe ali ndi zolemba zosiyanasiyana za mchere, ndipo kusiyana kumeneku n'kofunika kwambiri pa kusankha mankhwala ochepetsera madzi ndi chitukuko cha matope oletsa madzi oletsa matope ndi odana ndi matope.
(3) Zotsatira za ufa wamatope pazinthu za konkriti:
Kugwira ntchito kwa konkire sikungokhudza kupanga konkire, komanso kumakhudzanso mphamvu zamakina pambuyo pake komanso kulimba kwa konkire. Kuchuluka kwa tinthu tating'ono ting'onoting'ono ting'onoting'ono ting'onoting'ono, timafota tikauma ndikukula pakanyowa. Pamene matope akuwonjezeka, kaya ndi polycarboxylate yochepetsera madzi kapena naphthalene yochepetsera madzi, idzachepetsa kuchepetsa madzi, mphamvu, ndi kugwa kwa konkire. Kugwa, etc., kubweretsa kuwonongeka kwakukulu kwa konkire. Muyezo wa dziko "Mchenga Womanga" (GB/T14684-2011) umanena kuti pamene mphamvu ya konkire ndi C30 kapena pali kukana kwachisanu, anti-seepage kapena zofunikira zina zapadera, matope a ufa mumchenga wachilengedwe sayenera kupitirira 3.0 %, ndipo matope amatope sayenera kupitirira 1.0%; pamene mphamvu ya konkire imakhala yochepa kuposa C30, matope a ufa sangapitirire 5.0% ndipo matope a matope sangapitirire 2.0%.
Nthawi yotumiza: May-06-2024
