Li-additives tsa Konkreite tse bobebe | Li-Agents tse Foaming tse Phahameng ka ho Fetisisa bakeng sa Konkreite ea Cellular
superplasticizer ea konkreite ke motsoako oa bohlokoa o sebelisoang ho hlahisa konkreite e sebetsang hantle. E thusa ho ntlafatsa ts'ebetso le matla a konkreite ea ts'ebetso e phahameng hammoho le mosi oa silica, fofa molora, slag, kapa litlatsetso tse ling.
Li-superplasticizers (SP) ke li-macromolecules tse qhibilihang, ka makhetlo a makholo ho feta limolek'hule tsa metsi. Li khahlisa C3A ka likaroloana tsa samente ebe li lokolla metsi a koaletsoeng.
Ka motsoako oa konkreite, li-superplasticizers tsena li eketsoa ka tekanyo e tlase e nang le boholo ba 2 liperesente kaofela tsa metsi. Joale motsoako o tsoakane ka bonyane ba 3 metsotso ka ho phunya ka mochini kapa 5 metsotso e nang le motsoako oa seretse.
Ho eketsoa ha li-superplasticizers ho fokotsa bongata ba metsi ka har'a metsoako ea konkreite ntle le ho fokotsa matla kapa ho sebetsa ha motsoako.. Sena se ka boloka chelete e ngata thepa ea kaho hammoho le nako.
E boetse e thusa ho thibela ho arohana ka metsoako e thehiloeng ho lihlopha.
Bothata bo tloaelehileng ba ho sebelisa li-superplasticizers ke hore ba atisa ho lahleheloa ke ho sebetsa ha bona kapele. Sena se ka baka mathata ha u beha konkreite kaha literaka tse tsoakiloeng li tlameha ho nka maeto a malelele lipakeng tsa libaka tsa mosebetsi..
Mathata ana a ka rarolloa ka ho sebelisa se fapaneng le se fokotsang metsi a mangata: viscosity e fetolang metsoako (VMA). Li-VMA ke metsoako ea phofshoana e fokotsang ho putlama ha konkreite le ho thusa ho thibela karohano ka konkreite e thehiloeng ho kakaretso..
Matla a likonkreite tse sebetsang hantle tse nang le li-superplasticizers tsa mofuta oa SMF le SNF li phahame ho feta tsa konkreite ea litšupiso e entsoeng sebakeng se le seng ho se na motsoako., leha e le metsi:karo-karolelano ea samente e lekana. Leha ho le joalo, ho matlafatsa matla ho bakoa haholo ke ho fokotseha ha metsi ka lebaka la tšebeliso ea metsoako ena..