Tšebeliso ea Lisebelisoa tsa Metsi, Retarders, le Superplasticizers

Lisebelisoa tsa metsi, li-retarders, le li-superplasticizers ke metsoako ea lik'hemik'hale e sebelisoang ho eonametsoako ea konkreiteho ntlafatsa thepa e khethehileng le ho ntlafatsa ts'ebetso ea konkreite nakong ea linaha tsa eona tse ncha le tse thata. E 'ngoe le e 'ngoe ea metsoako ena e na le morero o ikhethang,' me hangata e sebelisoa mererong ea kaho ho fihlela litšobotsi tse lakatsehang tsa konkreite. Ha re hlahlobeng ts'ebeliso ea lisebelisoa tse fokotsang metsi, li-retarders le li-superplasticizer ka botlalo:

1. Lisebelisoa tsa Metsi:

Morero:

• Ho Fokotsa Metsi: Lisebelisoa tsa metsi, tse tsejoang hape e le lisebelisoa tse fokotsang metsi kapa li-plasticizers, li sebelisetsoa ho fokotsa metsi a hlokahalang ka motsoako oa konkreite ntle le ho senya ho sebetsa ha oona.

Melemo ea Bohlokoa:

• Mosebetsi o Ntlafetseng: Ka ho fokotsa metsi a metsi, ho fokotsa metsi ho ntlafatsa ho sebetsa le ho kopana ha motsoako oa konkreite.
• Matla a Eketsehileng: Ho fokotseha ha metsi hangata ho lebisa ho matla a holimo a konkreite le ho tšoarella.
• Ntlafatso e Feletseng: Konkreite e nang le lisebelisoa tsa metsi hangata e bonolo ho e qeta, e bakang sebaka se boreleli.

Lisebelisoa:

• High-Strength Concrete: Lisebelisoa tsa metsi li atisa ho sebelisoa ha ho etsoa konkreite e matla haholo moo likarolo tse tlaase tsa samente ea metsi li leng bohlokoa.
• Pumping Concrete: Ba thusa ho pompa konkreite libakeng tse telele ka ho boloka mokelikeli o le mong.

2. Li-retarders:

Morero:

• Ho lieha ho beha nako: Li-retarders ke li-admixtures tse etselitsoeng ho fokotsa nako ea ho beha konkreite, e lumellang nako e telele ea ho sebetsa.

Melemo ea Bohlokoa:

• Mosebetsi o Atolositsoeng: Li-retarders li thibela ho behoa pele ho nako ea konkreite, ho fana ka nako e eketsehileng ea ho kopanya, ho tsamaisa le ho beha thepa.
• Ho Fokotsa Mapetso: Linako tse butle-butle li ka fokotsa kotsi ea ho petsoha, haholo-holo maemong a leholimo a chesang.

Lisebelisoa:

• Hot Weather Concreting: Maemong ao mocheso o phahameng o ka potlakisang ho beha konkreite, li-retarders li thusa ho laola nako ea ho beha.
• Merero e Meholo ea Kaho: Bakeng sa merero e meholo moo lipalangoang le ho beoa ha konkreite li nkang nako e telele.

3. Li-Superplasticizers:

Morero:

• Ho ntlafatsa ts'ebetso ea ts'ebetso: Li-Superplasticizers, tse tsejoang hape e le ho fokotsa metsi a mangata, li sebelisetsoa ho eketsa haholo ts'ebetso ea konkreite ntle le ho eketsa metsi.

Melemo ea Bohlokoa:

• Mosebetsi o Phahameng: Li-Superplasticizers li lumella ho hlahisa konkreite e sebetsang haholo le e phallang ka tekanyo e tlaase ea samente ea metsi.
• Matla a Eketsehileng: Joalo ka li-conducers tsa metsi, li-superplasticizers li kenya letsoho ho matla a konkreite e phahameng ka ho nolofalletsa likarolo tse tlase tsa samente ea metsi.

Lisebelisoa:

• Self-Compacting Concrete (SCC): Li-superplasticizers li atisa ho sebelisoa ha ho etsoa SCC, moo ho nang le phallo e phahameng le thepa ea boipheliso e hlokahalang.
• Konkreite e Phahameng ka ho Fetisisa: Lits'ebetsong tse hlokang matla a phahameng, ho tšoarella, le ho fokotsa ho kenella.

Maikutlo a Tloaelehileng:

1. Ho lumellana: Li-admixtures li lokela ho lumellana le lisebelisoa tse ling ka har'a motsoako oa konkreite, ho kenyeletsoa samente, li-aggregates le li-additives tse ling.
2. Taolo ea Tekanyetso: Taolo e nepahetseng ea litekanyetso tse kopaneng e bohlokoa ho fihlela thepa e lakatsehang ea konkreite. Tšebeliso e feteletseng e ka baka liphello tse mpe.
3. Teko: Teko ea khafetsa le mehato ea taolo ea boleng ke ea bohlokoa ho netefatsa katleho ea li-admixtures motsoakong o khethehileng oa konkreite.
4. Litlhahiso tsa Moetsi: Ho latela likhothaletso le litataiso tse fanoeng ke moetsi oa motsoako ho bohlokoa bakeng sa ts'ebetso e nepahetseng.

Qetellong, ts'ebeliso ea lisebelisoa tse fokotsang metsi, li-retarders, le li-superplasticizer ka har'a motsoako oa konkreite li fana ka melemo e mengata, ho tloha ho ts'ebetso e ntlafalitsoeng le linako tse atolositsoeng tsa ho beha nako ho isa ho matla le ho tšoarella ho matla. Ho utloisisa litlhoko tse khethehileng tsa morero oa kaho le ho khetha motsoako o loketseng kapa motsoako oa metsoako ho bohlokoa bakeng sa ho finyella thepa e lakatsehang ea konkreite. Litekanyetso tsa li-admixture le meralo ea motsoako oa konkreite li lokela ho reroa le ho lekoa ka hloko ho netefatsa ts'ebetso e nepahetseng le ho tšoarella ha nako e telele ea konkreite.