Letsatsi la poso: 13 Phup,2022
Li-admixtures li bua ka sehlopha sa lisebelisoa tse ka ntlafatsang thepa e le 'ngoe kapa ho feta ea konkreite. Likahare tsa eona ka kakaretso li ikarabella feela ka tlase ho 5% ea dikahare tsa samente, empa li ka ntlafatsa haholo ts'ebetso, matla, ho tšoarella ha konkreite kapa ho fetola nako ea ho beha le ho boloka samente.
1. Kemiso ea metsoako:
Li-admixtures tsa konkreite hangata li aroloa ho latela mesebetsi ea tsona ea mantlha:
a. Li-admixtures ho ntlafatsa thepa ea rheological ea konkreite. Haholo-holo ho na le ntho e fokotsang metsi, e kenyang moea, e pompang joalo-joalo.
b. Li-admixtures tsa ho lokisa maemo le ho thatafatsa thepa ea konkreite. Haholo-holo ho na le li-retarders, li-accelerator, li-agents tsa matla a pele, joalo-joalo.
c. Li-admixtures tsa ho lokisa boemo ba moea ba konkreite. Haholo-holo ho na le li-air-entraining agents, li-air-entraining agents, li-foaming agents, joalo-joalo.
d. Li-admixtures ho ntlafatsa ho tšoarella ha konkreite. Ho na le haholo-holo li-air-entraining agents, tse thibelang metsi, li-rust inhibitors joalo-joalo.
e. Li-admixtures tse fanang ka thepa e khethehileng ea konkreite. Haholo-holo ho na le antifreeze, e atolositsoeng, colorant, air-entraining agent le pumping agent.
2. Li-superplasticizer tse sebelisoang ka tloaelo
Moemeli oa ho fokotsa metsi o bua ka motsoako o ka fokotsang tšebeliso ea metsi a kopanyang tlas'a boemo bo tšoanang ba ho theoha ha konkreite; kapa e ka eketsa ho putlama ha konkreite ha karo-karolelano ea konkreite le tšebeliso ea metsi e ntse e sa fetohe. Ho ea ka boholo ba sekhahla sa phokotso ea metsi kapa keketseho ea ho putlama, e arotsoe ka mekhahlelo e 'meli: e tloaelehileng ea ho fokotsa metsi le e sebetsang hantle haholo e fokotsang metsi.
Ho phaella moo, ho na le lihlopha tse fokotsang metsi, tse kang li-air-entraining tse fokotsang metsi, tse nang le liphello tse peli tsa ho fokotsa metsi le ho kenya moea; lisebelisoa tsa pele tsa ho fokotsa metsi li na le liphello tsa ho fokotsa metsi le ho ntlafatsa matla pele ho nako; Moemeli oa ho fokotsa metsi, o boetse o na le mosebetsi oa ho lieha ho beha nako joalo-joalo.
Mosebetsi o ka sehloohong oa ho fokotsa metsi:
a. Ntlafatsa haholo metsi ka tekanyo e tšoanang ea motsoako.
b. Ha tekanyo ea metsi le samente e sa fetohe, fokotsa tšebeliso ea metsi, fokotsa tekanyo ea samente ea metsi, 'me u eketse matla.
c. Ha mokelikeli le matla li lula li sa fetohe, tšebeliso ea samente e bolokiloe 'me litšenyehelo li fokotsehile.
d. Ntlafatsa ts'ebetso ea konkreite
e. Ntlafatsa ho tšoarella ha konkreite
f. Lokisa konkreite e matla le e sebetsang hantle.
Polysulfonate letoto la lihlooho tse: ho akarelletsa le naphthalene sulfonate formaldehyde condensate (NSF), melamine sulfonate formaldehyde polycondensate (MSF), p-aminobenzene sulfonate formaldehyde polycondensate, modified lignin sulfonate, polystyrene Sulfonates le sulfonated sulfonate le sulfonated ketonesD, tse tloaelehileng tsa rona ketone tse sebelisoang ke aldehyde. naphthalene sulfonate formaldehyde condensate.
Letoto la Polycarboxylate: laola ka nepo ts'ebetso ea pele ea hydration le ho fokotsa tahlehelo ea konkreite.
Phapang pakeng tsa sesebelisoa sa ho fokotsa metsi se sebetsang hantle haholo le se tloaelehileng se fokotsang metsi se bonahala haholo-holo ka hore se fokotsang metsi se sebetsang hantle haholo se ka tsoela pele ho eketsa mokelikeli ka bongata bo boholo, kapa ho tsoela pele ho fokotsa tlhokahalo ea metsi. Mokhoa o atlehang oa ho fokotsa metsi o tloaelehileng o batla o le monyenyane.
Phello ea superplasticizer ka tekanyo e nyane e ke ke ea sebelisoa e le motheo oa ho ahlola ts'ebetso ea superplasticizer. Sena se lokela ho nahanoa ha u khetha mochine o fokotsang metsi. Tekanyo e nepahetseng ea superplasticizer e lokela ho khethoa ka liteko, 'me ha ea lokela ho sebelisoa feela ho latela litekanyetso tsa moetsi oa superplasticizer.
Nako ea poso: Jun-13-2022
