Superplasticizer Dos and Don's for Optimal Results

Ho lokile, mona ke poso ea blog e entsoeng ho latela litlhaloso tsa hau.

(Superplasticizer Dos and Don's for Optimal Results)

Superplasticizer Dos le Seo u sa lokelang ho se Etsa bakeng sa Liphetho tse Ntle .

O kile oa beha konkreite mme oa e bona e satalla hape ka potlako? Mohlomong ho ne ho hlile ho utloahala ho tenya ebile ho le thata ho sebetsa le ho tloha qalong. Ntoa eo ke ea sebele. Ho potoloha hantle le ho roala ntle le ho tela ho thatafala ke mokhoa o tsitsitseng oa ho leka-lekanya menyetla ea konkreite.. Kena ka superplasticizer. Motsoako ona o matla o tšoana le lero la boselamose bakeng sa konkreite. E sebedise hantle, e fetoha ka thata, metswako e sa kgoneheng hantle hore e be boreledi, konkreite e tsamaeang eo ho leng bonolo ho e beha le ho roala ka bokhabane. E sebelitse hampe, ho ka baka tlokotsi. Lumela karohano, tahlehelo ea mali e ngata haholo, kapa konkreite e behang hape kapele kapa butle ka tsela e ferekanyang. Ho tseba lintho tseo u lokelang ho li etsa le tseo u sa lokelang ho li etsa ho bohlokoa. Lumella ho senya hantle hore na u ka sebelisa matla a li-superplasticizer hantle joang.

1. Superplasticizer ke eng? .
Nahana ka motsoako oa konkreite e le sehlopha sa majoe le likotoana tsa lehlabathe tse pakiloeng hammoho. Metsi a ba thusa ho falla, leha ho le joalo metsi a mangata a senya konkreite ea ho qetela. Superplasticizer ke k'hemik'hale e ikhethang e kentsoeng motsoakong. Mosebetsi oa eona o ka sehloohong ke ho etsa hore ho potoloha ha konkreite ho be betere ntle le ho hloka metsi a eketsehileng. E sebetsa ka ho koahela likhechana tsa konkreite. Qetello ena e ba fa tefiso e mpe. Likaroloana tse nang le litšenyehelo tse tšoanang li leleka tse fapaneng. Senya sena se pshatla likhalase tsa samente. E lumella li-bits slide ho feta tse ling ho ba bonolo haholo. Phello? Konkreite e fetoha mokelikeli le ho feta. U fumana ts'ebetso e phahameng– ho bolelang hore e phalla hantle mme e tlatsa mefuta ka potlako– leha ho le joalo ntle le metsi a neng a tla hlokahala ho phethahatsa potoloho eo. Sena ke senotlolo. Metsi a fokolang a bolela ho tiea ho hoholo le ho tiea ho betere ka har'a konkreite e thata. Li-superplasticizers hangata li bitsoa li-reductions tsa metsi tse phahameng haholo hobane li lumella phokotso e kholo joalo ea ho kopanya metsi.. Li bohlokoa bakeng sa kaho ea sejoale-joale ea konkreite, haholo moo ho hlokehang phallo e phahameng.

2. Hobaneng U Sebelisa Superplasticizer? .
Melemo e hlakile. Ea pele, ho sebetsa ho ntlafetseng ke lebaka le leholo ka ho fetisisa. Ho tšela le ho beha konkreite ho bonolo haholo. E phalla hantle ho ea mefuteng e rarahaneng le ka tšehetso e fokolang. Sena se tlisa tšebelisano e ntle haholo ka boikitlaetso bo fokolang. U fumana teteaneng, moralo o tšoanang oa konkreite o nang le likheo tse fokolang. Ea bobeli, ka lebaka la hore o sebelisa metsi a fokolang haholo, konkreite e tiileng e matla ho feta. Metsi a fokolisa konkreite; ho e theola ho eketsa matla a hatellang haholo. Ea boraro, bophelo bo bolelele bo betere bo tla ka matsoho le lisebelisoa tse tlase tsa metsi le botenya bo boholo. Konkreite ha e monye haholo. E emela ho kenella ha metsi hantle haholo. Sena se bonts'a ts'ireletso e betere khahlano le tšenyo ea leqhoa, khaello ea sulfate, le ho bola ha tšepe e matlafatsang. 4th, li-superplasticizers li lumella nts'etsopele ea metsoako ea konkreite e sebetsang hantle. Tsena li kenyelletsa konkreite e ikemetseng (SCC) hore melapo le maemo a tlas'a boima ba eona. Metsoako ea konkreite e matla le eona e bohlokoa haholo ho li-superplasticizers. Qetellong, li ka ntlafatsa boemo ba leholimo. Konkreite e potoloha hantle, ho fokotsa tlhokeho ya ho tsitsinyeha ho feteletseng. Sena se fokotsa bofokoli ba bokaholimo joalo ka menyetla ea litšitšili, ho baka mohlweki, boreleli ba botle bo botle. Ka bokhutšoane, li-superplasticizers li u thusa hore u be matla, meaho e mengata e tšoarellang kapele le ka boleng bo holimo haholo.

3. Mokhoa oa ho Sebelisa Superplasticizer ka nepo (The Dos) .
Ho fumana liphello tse molemo ka ho fetisisa ho hloka ho sebetsana ka hloko. Sheba leqephe la lintlha tsa theknoloji ea moetsi. Ntho e 'ngoe le e' ngoe e fapane. Tseba mefuta e fapaneng ea litekanyetso tsa eona, ho lumellana le samente ea hau, le ho kopanya litlhoko. Kenya superplasticizer ka nako e nepahetseng. Sena se bohlokoa haholo. A lot of superplasticizers perform best when added to the mix after about 60-75% ea metsi a ho tsoaka e teng hona joale. Ho e kenyelletsa kapele kapa morao haholo ho ka fokotsa ts'ebetso ea eona. Etsa tumellanong le litekanyetso tse khothalletsoang. Qala ka har'a lethathamo le boletsoeng ke mofani oa thepa. Ho sebelisa tekanyetso e tlase ho ke ke ha u fa phepelo eo u e hlokang. Ho noa ho feta tekano ho ka baka mathata a kang ho lieha ho feta tekano kapa karohano e matla. Lekola khatello ea maikutlo ea konkreite kapa u phalle u sa khaotse. Liphetoho li ka 'na tsa hlokahala batch-to-batch. Etsa bonnete ba hore u kopanya ka botlalo. Superplasticizer e hloka ho qhalakanngoa ka mokhoa o ts'oanang ho pholletsa le motsoako. Ho se kopane ho lekaneng ho baka liphetho tse sa tsitsang. Ela hloko boemo ba mocheso. Boemo ba leholimo bo chesang bo ka etsa hore ho putlama ha konkreite ho fokotsehe kapele. U kanna ua hloka tekanyo e itseng e fapaneng kapa mofuta oa superplasticizer o etselitsoeng mathata a chesang. Etsa ho lumellana ha tlhahlobo. Pele o sebelisa superplasticizer e ncha e ncha ka samente ea hau le metsoako e meng e fapaneng., tsamaisa lihlopha tse nyane tsa tlhahlobo. Lekola nako ea ho theha, tahlehelo ea ho sebetsa, le tsoelo-pele ea toughness. Etsa ho itokisetsa tahlehelo ea ho sebetsa. Boholo ba li-superplasticizers li etsa hore konkreite e tšolle ho putlama ha nako. Kenya sena lenaneong la hau la ho beha. U ka hloka ho eketsa e nyane, Laola bongata ba superplasticizer e eketsehileng hamorao (ho nosetsa hape), leha ho le joalo feela haeba moetsi a e nolofalletsa 'me konkreite ha e so thehoe.

4. Lisebelisoa tse Tloaelehileng tse Hlokang Superplasticizers .
Li-superplasticizer li khanya lits'ebetsong tse ngata tse hlokang konkreite. Konkreite e ikemetseng ke mohlala o ka sehloohong. SCC e phalla ka potlako, tlatsa liforomo ka ho feletseng, mme e feta hara rebar ntle le vibration. Sena se itšetlehile ka ho feletseng ka holimo ho litekanyetso tsa superplasticizer. Metsoako ea konkreite e matla a phahameng e e sebelisa ho fihlela tekanyo e fokotsehileng haholo ea samente ea metsi. Sena ke sa bohlokoa bakeng sa staminas ho feta 60 MPa kapa esita le 100 MPa. Konkreite e pompetsoeng e thusa haholo. Mokelikeli o phahameng o fanoang ke li-superplasticizers o etsa hore ho pompa ho be bonolo. E fokotsa likhohlano meleng le ho fokotsa kotsi ea ho thibela. Konkreite e thellang, joalo ka mabota kapa mapatlelo, e hloka ts'ebetso e tsitsitseng le nako. Li-superplasticizers li thusa ho boloka phallo eo ha foromo e ntse e tsamaea. Ho etsa konkreite ea precast ho hloka likhakanyo tsa pele le ho fumana matla kapele. Li-superplasticizers li etsa bonnete ba hore li potoloha hantle bakeng sa hlobo le hlobo e ntle, ha li ntse li nolofalletsa lisebelisoa tsa maqhubu a tlase bakeng sa matla a pele.. Shotcrete, konkreite e fafalitsoeng, e hloka motsoako oa tlhaho empa o pompeha. Li-superplasticizers li ntlafatsa ho pompa le ho fokotsa sekhahla. Likarolo tse tšesaane le liforeimi tse matlafalitsoeng haholo li hloka konkreite e ka phallang hantle libakeng tse lekanyelitsoeng. Li-superplasticizers li fana ka mokelikeli oa bohlokoa ntle le matšoenyeho a ho sisinyeha. Hantle-ntle, mofuta ofe kapa ofe oa mosebetsi moo ho beoang habonolo, boima bo phahameng, kapa ho phela nako e telele ho bohlokoa ho ka sebelisa superplasticizer.

5. Superplasticizer Lipotso Tse Botsoang Hangata: Ho Thibela Lintho Tseo U sa li Etsang .

(Superplasticizer Dos and Don's for Optimal Results)

A re nkeng lipotso tse tloaelehileng le liphoso ho thibela. A na nka eketsa metsi haeba motsoako o bonahala o le thata? Ho hang ha ho joalo. Ho eketsa metsi ho senya tekanyo ea samente ea metsi. E senya konkreite mme e ntlafatsa ho kenella ha metsi. Sena se hlola sepheo sohle sa ho sebelisa superplasticizer. Haeba ts'ebetso e fokotsehile, hlahloba litekanyetso tsa superplasticizer pele. A na nka lahla sets'oants'o sohle ka har'a hore se phalle haholo? Che. Overdosing ke ea bohlokoa se ke ua. Superplasticizer e feteletseng e ka baka karohano e feteletseng. Motsoako oa arohana, e nang le metsi a mahoashe a tebang le sekhomaretsi sa samente se phahamang. Hape ho ka fella ka ho lieha ho feteletseng. Konkreite e kanna ea se be lihora tse ngata kapa mohlomong matsatsi. Li-hold-ups tsena li qetella le ho tlosa mefuta. Kamehla khomarela mefuta e fapaneng ea lethal dose e eletsoang. Ho thoe'ng haeba ke eketsa superplasticizer ka nako e fosahetseng? Nako ea bohlokoa. E eketsa pele ho nako, haholo-holo ka metsi ohle a kopanyang, e ka etsa hore e se tšepahale. Ho e kenyelletsa morao haholo ho ka 'na ha se ke ha ajoa ka nepo. Latela litaelo tsa moetsi mabapi le tatellano ea ntlafatso. Konkreite ea ka e ile ea putlama ka potlako. A na nka kenyelletsa superplasticizer hamorao? Mohlomong, leha ho le joalo hlokomela. Sena se bitsoa re-dosing. E etse feela haeba konkreite e ntse e le polasetiki 'me ha e so qale ho theha. Sebelisa feela lintlha tsa mofuta oa superplasticizer e etselitsoeng ho rekoa hape. Ho kenyelletsa ho hongata haholo kapa mofuta o fosahetseng ho ka baka mathata. Kamehla batla keletso ho tsoa leqepheng la lintlha tsa sehlahisoa. Na tsohle li-superplasticizers li tšoana hantle? Che. Ho na le mefuta e fapaneng ea lik'hemik'hale. Tse ling li thehiloe ho sulfonated naphthalene formaldehyde (SNF), tse ling ka polycarboxylate ether (PCE). Mefuta ea PCE hangata e tšepahala haholo 'me e baka tahlehelo e fokolang ea ho tepella maikutlong. Li ka boela tsa lumellana le letoto le pharaletseng la li-concrete. Tseba hore na u sebelisa mofuta ofe le matlo a eona. Na superplasticizer e susumetsa nako ea ho theha? Ee, e ka khona. Mefuta e meng e baka tieho e nyane, tse ling li ka ba le phello e fokolang. Mocheso o ka eketsa ho lieha. Utloisisa litlhophiso tse lebelletsoeng bakeng sa sehlahisoa sa hau se ikhethileng 'me u lokise linako tsa ho qetela ha ho hlokahala. Ho iphapanyetsa sena ho ka baka mathata haeba u leka ho qeta kapele haholo kapa ka morao ho nako.
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