Li-additives tsa Konkreite tse bobebe | Li-Agents tse Foaming tse Phahameng ka ho Fetisisa bakeng sa Konkreite ea Cellular
lisebelisoa tsa konkreite ea foam li sebelisoa likarolong tse fapaneng tsa ts'ebetso ea boenjiniere ba sechaba. Hangata li sebelisoa ka mekhahlelo e tlase ea meaho kapa meaho ea motheo, e le thepa ea ho tlatsa libakeng tse bulehileng tse kang mehaho e sa sebelisoang ka tlas'a lefatše, le maboteng a sireletsang tšireletso le fatše.
The lisebelisoa tsa konkreite ea foam e na le melemo e mengata ho feta lisebelisoa tsa setso tse thehiloeng ho samente, joalo ka tekanyo e tlase ea metsi ho isa ho samente (WC) le tshebetso e phahameng. Li boetse li na le boima bo tlase ba bongata 'me li na le ductile ho feta, ho boloka lisebelisoa tsa thepa le ho ntlafatsa thepa ea 'mele le ea mechine ea konkreite.
Lithapo li ka eketsa matla a flexural a konkreite ea foam, haholoholo ka ho fetisa kgatello ya maikutlo ka ho kopanya. Holim'a moo, likhoele li ka ntlafatsa boitšoaro ba ka mor'a ho phunyeha ha konkreite ea foam.
Mefuta e fapaneng ea likhoele tsa tlhaho, joalo ka tsoekere ea 'moba pulp fiber, coconut fiber, le coir fiber, e ka ekeletsoa ka konkreite ea foam. Holim'a moo, tšebeliso ea likhoele tsena e ka fokotsa ho honyela ho omisang le ho monya metsi.
Li-synthetic foaming agents li boetse li sebelisoa haholo tlhahisong ea konkreite ea foam. Li-additives li qhibiliha ka metsing pele li ferekanngoa ka ho “koae”. Ba hlahisa konkreite e tsitsitseng ea foamed, eo hape e kgonang ho pompa.
Li-foaming agents tse thehiloeng ho protheine li ka kopanngoa le metsi, empa ha lia lokela ho kopanngoa le li-plasticizers kapa li-agent tse fokotsang metsi. Ha mochini o fokotsang metsi kapa polasetiki e kopantsoeng le motsoako oa protheine o nang le foaming, motsoako ha o tsitsa mme o atisa ho arola nakong ya ho kopanya.
Li-microcracks li bonoa litšoantšong tsa SEM tsa mehlala ea konkreite ea foam e pepesitsoeng ho eona 800 degC ka lebaka la ho arohana ha metsi a tlanngoeng ke lik'hemik'hale le lihlahisoa tsa hydration ka har'a matrix a konkreite [18]. Ha CF e kenngoa ka har'a konkreite, e etsa sebopeho sa letlooa la sebaka se nang le bots'epehi bo botle.