Usuku lwePosi:30,Usebe,2023
Ukuzivumelanisa nezimo kanye nokungafaneleki phakathi kokuhlanganiswa kokhonkolo kanye nosimende kungabhekwa njengokulandelayo: Lapho wenza ukhonkolo (noma udaka), ngokuya ngobuchwepheshe obucacisiwe bokwenza amazinga afanelekayo angakwazi ingezwe emithethweni. Uma usimende usebenzisa ukuhlangana kwezinhlobonhlobo kungakhiqiza umphumela oyifunayo, usimende uhambisana nokuhlanganiswa. Ngokuphambene nalokho, uma umphumela ungakhiqizwanga, usimende kanye nokuhlanganiswa akufanelekile. Isibonelo, i-superplastizer ekhonkolo ingezwe kukhonkolo olungiselelwe kusuka kumamitha amahlanu ajwayelekile ePortland (ahlolwe ukuze ahlangabezane nezidingo zamazinga wokunciphisa amanzi anyuse amandla, futhi zonke ezinye izinto ziyefana, kukhona ukhonkolo owodwa olungiselelwe ku-Conment unezinyathelo ezimbi kakhulu ngaphakathi isilinganiso sokuncipha kwamanzi. Amanye amakhekheli awunankinga. Ngakho-ke, kungabhekwa ukuthi le nsizwa ayilungele i-superplastimizer, namanye amakhekhe amanzi asebenza kahle Ukunciphisa i-ejenti kufanelekile. Isibonelo, lapho ukhonkolo olungiselelwe kukonamba oluthile uxutshwe ne-coagulant esheshayo (ihlolwe ukuhlangabezana namazinga afanele), kepha ukusheshisa komphumela akutholwanga, konke Kulungile kubhekwe njengengahambelani phakathi kwama-admixtures kanye nosimende.
Izinhlayiya zomasipala we-Cement Fict zine-adsorption eqinile ekunciphiseni kwamanzi ama-ejenti ama-molecule. Ku-Cement Slurry nge-ejenti enciphisa amanzi, ama-FINT the cement izinhlayiya, enkulu indawo ethize yendawo, okungukuthi, ama-molecule ancishisiwe amanzi. Inani le-adsorption likhudlwana. Ngakho-ke, esimweni senani elifanayo lamanzi anciphisa umenzeli, umphumela weplastiki ube mubi kakhulu ngokosishi onobunzima obuphakeme.
Manje abanye abakhiqizi bakasimende bavame ukuthuthukisa amandla okuqala kasimende. Ukuze uthole ubuciko besilo, ukuze kufinyelelwe umphumela ongcono weplastiki, kuyadingeka ukukhulisa inani lamanzi anciphisa i-ejenti. Ubusha kanye nokushisa kuka usimende kuyathuthuka, futhi ipulasitiki yamanzi anciphisa umehluko umehluko ohambelana. Lokhu kungenxa yokuthi impahla evumayo kagesi kasimende omusha inamandla futhi umthamo we-adcerption we-ejenti yokunciphisa amanzi mkhulu. Ukushisa okuphezulu kwesimende, okubi kakhulu komphumela weplastiya wamanzi anciphisa umenzeli. Ukulahleka kwe-slump nakho kuyashesha. Ngakho-ke, lapho ezinye izitshalo zokukhiqiza zikakhonkolo ezithengiswayo zisebenzisa ukhonkolo osanda kugaya futhi namanje ulahlekelwe ukushisa, izinga lokunciphisa amanzi liphansi futhi ukulahleka kwe-slump kushesha kakhulu. Ngize ngivele ku-blender Chang confensation ngakho-ke, kufanele sinake futhi sigwenywe.
Isikhathi sePosi: Jan-30-2023
