Li-additives tsa Konkreite tse bobebe | Li-Agents tse Foaming tse Phahameng ka ho Fetisisa bakeng sa Konkreite ea Cellular
Ha ho tluoa tabeng ea konkreite, bohle rea tseba hore metsi a bohlokoa ho theha motsoako o sebetsang. Empa, ka linako tse ling motsoako o hloka ho sebetsa ka metsi a fokolang ho feta se hlokoang ke moralo o tloaelehileng oa motsoako oa konkreite e le hore o finyelle litlhaloso kapa litlhoko tse khethehileng tsa morero joalo ka ho tšela litšiea tse telele.. Ke hona moo konkreite se fokotsang metsi (hape e tsejoa e le plasticizer) e ka thusa.
Metsi a fokotsang metsi ke sehlopha sa lik'hemik'hale tse kenyelletsoeng motsoakong oa konkreite ho lumella tšebeliso ea metsi a tlase ho tekanyo ea samente ntle le ho senya matla le ho qetela.. Li sebelisoa mefuteng e mengata ea likopo tsa kaho ho kenyelletsa le konkreite e kholo, prestressing tšepe le borokho decks.
Metsoako e tloaelehileng ea ho fokotsa metsi ke lihlahisoa tsa maemo a tlase tseo hangata li entsoeng ka lignosulfonates., hydroxycarboxylic acid kapa lik'habohaedreite. Hangata ba khona ho fokotsa metsi a konkreite ka 5 ho 10% bakeng sa mefuta e fokolang ea 3-to-6 inches 'me e tlameha ho lumellana le ASTM C494 Mofuta oa A (metsoako e fokotsang metsi).
Metsoako e fokotsang metsi a mangata, hape e bitsoa li-superplasticizers, ba khona ho eketsa ho putlama ha konkreite ho tloha ho 5-to-8 inches mme ba tlameha ho kopana le ASTMC Specification C494 Type F. (metsoako e fokotsang metsi a mangata). Sehlopha sena hangata se sebelisoa mererong e ikhethang joalo ka metheo e tebileng kapa likarolo tsa precast moo ho hlokahalang ho putlama ho hoholo.
Mokhoa o ka sehloohong oo li-admixtures tsena li sebetsang ka oona ke ho repulsion electrostatic. Ha metsoako ea konkreite e kopana le metsi, litefello tse sa tšoaneng tsa motlakase likarolong tsa samente li hohelana ho etsa hore li kopane kapa li kopane.. Lisebelisoa tsa metsi ha e le hantle li fokotsa litefello tsena e le hore likaroloana tsohle tsa samente li be le tefiso e tšoanang ebe li leleka tse ling., e ba lumellang hore ba qhalane hantle ho pholletsa le konkreite. Sena se thibela agglomeration mme se eketsa phallo kapa ho putlama ha konkreite.