Konkreite e Ikamahanyang (SCC) ke theknoloji ea sejoale-joale ea konkreite e phallang tlas'a boima ba eona ho tlatsa foromo ntle le tlhoko ea ho thothomela ha mechini. Melemo ea eona e kenyelletsa ho sebetsa hantle, litšenyehelo tse fokotsehileng tsa basebetsi, le ts'ebetso e ntlafalitsoeng ea sebopeho. Ho fihlella litšobotsi tsena ho hloka taolo e nepahetseng ea motsoako, hangata ka thuso ea metsoako e kang Hydroxypropyl Methylcellulose (HPMC). Polymer ena ea cellulose ether e bapala karolo ea bohlokoa ho fetoleng thepa ea rheological ea SCC, ho ntlafatsa botsitso ba eona le litšobotsi tsa phallo.
Matlotlo le Mesebetsi ea HPMC
Hydroxypropyl Methylcellulose (HPMC) ke polymer e sa qhibiliheng metsing, e sa ionic e nkiloeng ho cellulose. Litšobotsi tsa eona tsa bohlokoa li kenyelletsa:
Phetoho ea Viscosity: HPMC e eketsa viscosity ea litharollo tsa metsi, e ntlafatsa tlhaho ea thixotropic ea motsoako oa konkreite.
Ho Boloka Metsi: E na le bokgoni bo botle ba ho boloka metsi, bo thusang ho boloka konkreite e sebetsa hantle ka ho fokotsa mouoane wa metsi.
Ho khomarela le ho momahana: HPMC e ntlafatsa ho kopana pakeng tsa mekhahlelo e fapaneng konkreiteng, e ntlafatsa thepa ea eona ea ho momahana.
Ntlafatso ea Botsitso: E tsitsisa ho emisoa ha li-aggregate motswakong, e fokotsa karohano le ho tsoa mali.
Matlotlo ana a etsa hore HPMC e be tlatsetso ea bohlokoa ho SCC, kaha e sebetsana le liphephetso tse tloaelehileng tse kang karohano, ho tsoa mali le ho boloka phallo e lakatsehang ntle le ho beha botsitso kotsing.
Karolo ea HPMC ho Konkreite e Ikamahanyang le Lintho
1. Ntlafatso ea Bokhoni ba ho Sebetsa
Mosebetsi o ka sehloohong oa HPMC ho SCC ke ho ntlafatsa bokhoni ba eona ba ho sebetsa ka ho eketsa viscosity ea motsoako. Phetoho ena e lumella SCC ho phalla habonolo tlas'a boima ba eona, e tlatsa foromo e rarahaneng le ho fihlela boemo bo phahameng ba ho hatelloa ntle le tlhoko ea ho thothomela. HPMC e etsa bonnete ba hore konkreite e lula e sebetsa ka nako e telele, e leng se molemo haholo bakeng sa ho tšolloa ho hoholo kapa ho rarahaneng.
Ho Phalla ha Motsoako: HPMC e kenya letsoho ho thepa ea thixotropic ea motsoako, e o lumella ho lula o le metsi ha o kopantsoe empa o teteana ha o eme. Boitšoaro bona bo tšehetsa litšobotsi tsa SCC tsa ho ikamahanya le maemo, ho netefatsa hore o phalla hantle ho tlatsa hlobo le ho koahela mekoallo ea ho matlafatsa ntle le karohano.
Ho Tsitsa: Ka ho laola ho teteana ha metsi, HPMC e thusa ho boloka botsitso bo ts'oanang ho pholletsa le motsoako, ho netefatsa hore sehlopha se seng le se seng sa SCC se bonts'a ts'ebetso e tsitsitseng mabapi le phallo le botsitso.
2. Karohano le Taolo ea ho Tswa ha Madi
Karohano (karohano ea lintho tse kopantsoeng ho tloha ho peista ea samente) le ho tsoa mali (metsi a nyolohelang holimo) ke matšoenyeho a bohlokoa ho SCC. Liketsahalo tsena li ka beha bohloeki ba sebopeho le qetello ea bokaholimo ba konkreite kotsing.
Motsoako o Tšoanang: Bokhoni ba HPMC ba ho eketsa ho teteana ha peista ea samente bo fokotsa motsamao oa metsi le li-aggregate, ka hona bo fokotsa kotsi ea karohano.
Ho Fokotsa ho Tswa ha Madi: Ka ho boloka metsi ka hara motswako, HPMC e thusa ho thibela ho tswa ha madi. Ho boloka metsi hona ho boetse ho netefatsa hore tshebetso ya ho ntsha metsi e tswela pele ka katleho, e ntlafatsa ntshetsopele ya matla le ho tshwarella ha konkreite.
3. Botsitso bo Ntlafalitsoeng
HPMC e kenya letsoho botsitsong ba SCC ka ho ntlafatsa momahano pakeng tsa dikarolwana tse motswakong. Botsitso bona bo ntlafaditsweng bo bohlokwa ho bolokeng kabo e tshwanang ya di-aggregate le ho thibela ho thehwa ha di-voids kapa matheba a fokolang.
Ho Kopana: Sebopeho sa ho kgomarela sa HPMC se kgothaletsa ho hokahana ho betere pakeng tsa dikarolwana tsa samente le di-aggregate, e leng se fellang ka motswako o kopaneng o hanelang karohano.
Ho Tsitsisa: HPMC e tsitsisa sebopeho sa konkreite, e dumella kabo e lekanang ya di-aggregate le ho thibela ho thehwa ha laitance (lera le fokolang la samente le dikarolwana tse nyane hodima metsi).
Tšusumetso Matleng a Mechini
1. Matla a Khatello
Tšusumetso ea HPMC matleng a khatello a SCC ka kakaretso e ntle. Ka ho thibela karohano le ho netefatsa motsoako o ts'oanang, HPMC e thusa ho boloka botšepehi ba sebopeho se senyenyane sa konkreite, e leng se lebisang litšobotsing tse betere tsa matla.
Ho Monya metsi: Ho boloka metsi ka botlalo ho netefatsa hore likaroloana tsa samente li na le metsi a mangata, e leng se tlatsetsang ntshetsopeleng ea matrix e matla.
Botebo bo Tšoanang: Thibelo ea karohano e fella ka kabo e ts'oanang ea li-aggregate, e tšehetsang matla a phahameng a khatello le ho fokotsa kotsi ea lintlha tse fokolang.
2. Ho tšoarella
Tšebeliso ea HPMC ho SCC e ntlafatsa ho tšoarella ha eona ka ho netefatsa hore e teteaneng le e nang le sebopeho se tšoanang haholoanyane.
Ho Fokotseha ha ho Lula: Ho kopana ho ntlafetseng le ho fokotseha ha ho tsoa mali ho fokotsa ho kena ha konkreite, ho eketsa ho hanyetsa ha eona linthong tsa tikoloho tse kang lipotoloho tsa ho qhibilihisa, tlhaselo ea lik'hemik'hale le khabone.
Qetello e Ntlafalitsoeng ea Bokaholimo: Thibelo ea ho tsoa mali le karohano e netefatsa qetello ea bokaholimo e boreleli le e tšoarellang haholoanyane, e leng se sa kotsing ea ho petsoha le ho hola habonolo.
Litlhoko tsa Kopo le Tekanyo
Katleho ea HPMC ho SCC e itšetlehile ka tekanyo ea eona le litlhoko tse khethehileng tsa motsoako. Litekanyo tse tloaelehileng tsa tekanyo li tloha ho 0.1% ho isa ho 0.5% ea boima ba samente, ho latela thepa e lakatsehang le litšobotsi tsa likarolo tse ling tse motsoakong.
Moralo oa Motsoako: Moralo o hlokolosi oa motsoako o bohlokoa ho ntlafatsa melemo ea HPMC. Lintlha tse kang mofuta oa motsoako, bokahare ba samente, le metsoako e meng e kopantsoeng li tlameha ho nahanoa ho fihlela tekano e lakatsehang ea ho sebetsa hantle, botsitso le matla.
Ho tsamaellana: HPMC e tlameha ho tsamaellana le metsoako e meng e sebediswang motswakong, jwalo ka di-superplasticizer le di-water reducer, ho qoba dikamano tse mpe tse ka sitisang tshebetso ya SCC.
Hydroxypropyl Methylcellulose (HPMC) e bapala karolo ea bohlokoa ho ntlafatseng ts'ebetso ea Konkreite e Ikamahanyang le Lintho (SCC). Bokhoni ba eona ba ho fetola viscosity, ho ntlafatsa ho boloka metsi, le ho tsitsisa motsoako bo rarolla liphephetso tsa bohlokoa tlhahisong ea SCC, ho kenyeletsoa karohano, ho tsoa mali le ho boloka phallo e le teng. Ho kenyelletsoa ha HPMC ho SCC ho fella ka motsoako oa konkreite o sebetsang haholoanyane, o tsitsitseng le o tšoarellang, o etsang hore e be sehlomathiso sa bohlokoa bakeng sa lits'ebetso tsa konkreite tsa sejoale-joale. Tekanyo e nepahetseng le moralo oa motsoako li bohlokoa ho sebelisa melemo e felletseng ea HPMC, ho netefatsa hore SCC e fihlela litekanyetso tse itseng tsa ts'ebetso tse hlokahalang bakeng sa merero e fapaneng ea kaho.
Nako ea poso: Phuptjane-18-2024