Li-additives tsa Konkreite tse bobebe | Li-Agents tse Foaming tse Phahameng ka ho Fetisisa bakeng sa Konkreite ea Cellular
Classification of Concrete hardharding agent le samente e behang kapele
Ke eng a ntho e thatafatsang konkreite?
Setsi sa ho thatafatsa konkreite ke e 'ngoe ea mefuta e mengata ea motsoako e sebelisitsoeng pejana nalaneng ea nts'etsopele ea li-admixtures tsa konkreite.. Hole haholo, indasteri e atlehile ho hlahisa mefuta e fapaneng ea li-agent tse thatafatsang konkreite, ho kenyelletsa chloride le sulfate. Motheong ona, lipatlisiso li fumane mefuta e fapaneng ea metsoako e kopantsoeng ea konkreite, joalo ka ntho e fokotsang metsi kapele, mofuta oa pele oa matla a Antifreeze le sesebelisoa sa ho pompa matla a pele, etc. Ho latela sebopeho sa eona sa lik'hemik'hale, li-agent tsa pele tsa matla li ka aroloa ka li-inorganic tsa pele tsa matla, liente tsa matla tsa pele tsa tlhaho le metsoako e kopaneng.
Seseta sa samente kapele ke eng?
Samente e behang kapele ke motsoako oa konkreite o etsang sete ea konkreite le ho thatafala kapele. Moemeli oa ho seta kapele oa samente o ikarabella feela 2% ho 3% ea bongata ba samente ka konkreite. Leha ho le joalo, e ka etsa hore konkreite e behoe qalong ka hare 5 metsotso. Accelerator e beha ka hare 12 metsotso ho fihlela sepheo sa tokiso ya tshohanyetso kapa ho beha konkreite ka potlako mokoting. Seseta sa samente kapele se sebelisoa haholo ho konkreite e fafalitsoeng le boenjiniere ba seretse se fafalitsoeng. E sebelisoa haholo boenjiniere ba ka tlas'a lefatše, boenjiniere ba kotopo, matlafatso ea letsoapo la dyke, boenjiniere ba ho phunya metsi, kaho ea foromo ea ho thella, tokiso ya tsela, tshehetso ya ankora ya fafatsa, etc. Theknoloji ea ho thatafatsa ka potlako. Setting-setting agent ea samente e ka aroloa ka mokhoa oa ho beha kapele oa samente ea phofo le samente ea metsi e behang kapele ho latela maemo.; ho latela li-ion tsa tšepe tsa alkali, e ka aroloa ka samente ea alkaline e behang kapele le samente ea alkali e tlase e behang kapele le ea samente e se nang alkali mekha e meraro.; ho ya ka dikhemikhale tse ka sehloohong, e ka aroloa ka aluminium oxide clinker hammoho le tsamaiso ea carbonate, tsamaiso ea sulfoaluminate, tsamaiso ea metsi khalase le tlaase Alkali kapa alkali-mahala samente setang ka potlako moemeli, etc. Ntle ho moo, Ho na le litlaleho tsa hore li-organic-inorganic composite samente li sebelisoa ka potlako ho etsa li-organic-inorganic blended setting agents.. Matla a eona a hatellang a ata 'me a ka fokotsa haholo lerole le ho khutla hape nakong ea kaho. Leha ho le joalo, organic cement Kenyelletso ea agent ea ho beha kapele hangata e ama phello ea ho beha kapele ea slurry ea samente..
Mochine oa ho thatafatsa konkreite le moemeli oa ho beha kapele samente
Ebang ke ntho e thatafatsang konkreite kapa ke sesebelisoa sa ho beha kapele sa samente, mefuta e fapaneng, le mokhoa oa ts'ebetso le ona ke o mong, le phello ea pele ea ho matlafatsa kapa ea ho kopanya ea ntho e thatafatsang konkreite kapa moemeli oa ho beha kapele samente hangata o hloka ho etsoa ka mekhoa e mengata ea ts'ebetso..
Setsi sa ho thatafatsa konkreite se sebetsa joang?
Mokhoa oa ts'ebetso oa moemeli oa ho thatafatsa oa konkreite le moemeli oa ho beha kapele samente o ts'oana, tseo ka bobeli li fihlelang matla a pele kapa phello ea ho beha kapele ka ho khothaletsa hydration ea tricalcium aluminate le tricalcium silicate ka Portland samente.. Phapang ke hore phello ea pele-matla ea moemeli oa matla a pele hangata e bontšoa likarolong tse ngata.. E ke ke ea khothaletsa feela hydration ea tricalcium aluminate empa hape e tla khothaletsa hydration ea tricalcium silicate e le hore ntho e thatafatsang konkreite e ka sebelisoa molemong oa pele oa hydration.. Tsoela pele ho bapala karolo ea matla a pele ho se ame matla a morao a konkreite haholo.
Setsi sa ho seta kapele sa samente se sebetsa joang?
Ho potlakisa ho potlakisa ha sekontiri sa samente hangata ho lebisitsoe haholo. Letoto la karabelo ea lik'hemik'hale le senya sephetho sa gypsum ka samenteng 'me ka potlako le ka bongata bo theha calcium aluminate hydrate., le calcium sulfoaluminate hydrate E kang ntho e sa qhibiliheng e khutsufatsa nako ea ho kenngoa ha samente le ho khothalletsa ho behoa ka potlako ha pente ea samente., empa ka nako e le nngwe, e tla lebisa mathateng a joalo ka matla a sa lekaneng a seretse sa samente (kapa konkreite e fafalitsoeng) nakong e tlang.
Sepheo sa ntho e thatafatsang konkreite le ntho e behang kapele samente
Ho na le liphapang tse kholo lipakeng tsa ntho e thatafatsang konkreite le mofuta oa ho beha kapele samente, tshebetso, phello le mochine, 'me lisebelisoa tsa bona li fapane haholo.
Ts'ebetsong ea konkreite, ho eketsa moemeli oa ho thatafatsa konkreite ho ka eketsa haholo matla a pele a konkreite ntle le ho ama matla a eona hamorao, 'me e ka khutsufatsa nako ea ho folisa haholo. Ka hona, mahlahana a pele a matla a sebelisoa haholo kahong ea mariha le tlhahiso ea karolo ea konkreite. Kaho ea mariha, konkreite e nang le litlhoko tsa pele tsa matla ka kakaretso e hloka ho eketsa moemeli oa matla ho khutsufatsa nako ea ho theola le ho folisa, potlakisa tsoelopele ea kaho, 'me ka katleho qoba tšenyo ea leqhoa, ka hona ho ntlafatsa katleho ea kaho le ho boloka litšenyehelo tsa kaho ea konkreite. Tlhahisong ea likarolo tsa konkreite, ts'ebeliso ea mahlahana a thata a konkreite e tloaelehile le ho feta ho otlolla mekoallo ea tšepe kapele kamoo ho ka khonehang, potlakisa tlhahiso ea formwork le tšebeliso ea pedestal.
Because the setting time of the cement quick-setting agent is short, it is not possible to ensure that the concrete is well mixed and poured within a short period before the initial setting. It is not suitable for the general formwork method of pouring concrete. Ka hona, accelerators should not be used in general engineering. Cement quick-setting agent is mostly used for sprayed concrete construction or as a quick plugging material.
Cie-China.org ke mofani ea ka sehloohong oa li-additives tsa konkreite ea foam e fanang ka konkreite e foqohang, superplasticizer,foam konkreite e matlafatsang bakeng sa konkreite e bobebe, Li-block tsa CLC. Haeba u batla ntho e thatafatsang konkreite ka kopo ikutloe u lokolohile ho iteanye le rona.