Li-additives tsa Konkreite tse bobebe | Li-Agents tse Foaming tse Phahameng ka ho Fetisisa bakeng sa Konkreite ea Cellular
A ntho e phophomang ka konkreite e sebetsa joalo ka mokeli-keli ho emulsify metsi le samente, ka hona ho bopa lebone, e matla, tenyetsehang, le boima bo tletseng moea boo ho leng bonolo ho tšolloa. E boetse e sebelisoa e le tlatsetso ea sebopeho.
Moqapi oa motsoako oa konkreite ea foam o kenyelletsa tekanyo e tlaase haholo ea samente ea metsi (WC) ha e bapisoa le metsoako e tloaelehileng ea concreting. Motsoako ona o kanna oa ba le molora oa mafura a kolobisitsoeng kapa slag ea fatše e nang le granulated blast furnace ho fapana le samente e tloaelehileng.. E ka 'na ea boela ea e-ba le boemo bo phahameng ba likarolo tse ntle tsa tlhaho ho ntlafatsa ts'ebetso le ho fokotsa litšenyehelo tsa motsoako. Li-aggregates tse ntle hangata li tsoakoa ka slurry pele li eketsoa ho foam.
Ts'ebetsong ea ho kopanya slurry, hangata ho sebelisoa motsoako oa mochini o nang le rotor ho etsa bonnete ba kabo e phethahetseng le e ts'oanang ea motsoako nakong eohle ea motsoako.. Joale slurry e fetisoa ka molomo ho etsa foam. Nozzle ena e behiloe ka har'a moropa oa mixer. Ntho e khethiloeng e ntan'o kopanngoa le slurry ka sekhahla sa 13-17 wt. % ea mokelikeli o foaming 'me o kenngoa ka har'a foam ka matla a ho kuta a hlahisoang ke ho potoloha ha rotor..
Lipapiso tse nang le litekanyo tse fapaneng tsa konkreite e foamed li ile tsa hlahisoa 'me tsa lekoa ho latela PN-EN 12390-7:2011 bakeng sa matla a bona a hatellang, matla a flexural, le permeability. Liphetho li bonts'itse hore matla a khatello ea matsatsi a 28 a konkreite e phofshoang a eketseha ka letsoalo le ntseng le eketseha. Ho ile ha boela ha fumanoa hore boholo ba pore ea konkreite e foamed e eketseha ka ho eketseha ha letsoalo, empa masoba ana a maholo a pota-potiloe ke a manyenyane, 'me ho bolokoa kabo e ntle ea li-air-voids.