Idethi yokuthunyelwe:30,Jan,2023
Ukuzivumelanisa nezimo nokungahambisani phakathi kwalokho okubizwa ngokuthi i-concrete admixture kanye nosimende kungacatshangwa kanje: Lapho wenza ukhonkolo (noma udaka), ngokusho kwemininingwane yezobuchwepheshe yesicelo se-concrete admixture, i-admixture ethile eye yahlolwa ukuze ihlangabezane nezindinganiso ezifanele kwengezwe emithethweni. Uma usimende usebenzisa i-admixture yezinhlobonhlobo ungaveza umphumela oyifunayo, usimende uyahambisana ne-admixture. Ngokuphambene nalokho, uma umphumela ungakhiqizwa, usimende kanye ne-admixture akufanelekile. Isibonelo, i-superplasticizer kakhonkolo yengezwa kukhonkolo elungiselelwe kusuka kumasimende amahlanu ajwayelekile asePortland (ihlolwe ukuhlangabezana nezidingo zamazinga okunciphisa amanzi asebenza kahle kakhulu, futhi zonke ezinye izici ziyafana, kukhona ukhonkolo owodwa olungiselelwe usimende unokushoda okukhulu Izinga lokunciphisa amanzi Amanye ama-cement awanayo le nkinga, ngakho-ke, kungacatshangwa ukuthi le simende ayifaneleki i-superplasticizer, kanye namanye ama-cements I-agent yokunciphisa amanzi esebenza kahle ifanelekile usimende othile uxutshwe ne-coagulant esheshisiwe (ihlolwe ukuze ihlangabezane nezindinganiso ezifanele), kodwa umphumela wokusetha osheshisiwe awutholakali, Ukwengeza ama-retarders akutholi umphumela ofanele wokuhlehlisa, konke KULUNGILE kubhekwa njengokungahambelani phakathi kwezixube nosimende.
Izinhlayiya zikasimende ze-fineness Cement zine-adsorption enamandla kuma-ajenti anciphisa amanzi. Ku-slurry kasimende nge-ejenti yokunciphisa amanzi, izinhlayiya zikasimende ziba ngcono, indawo ethile yendawo enkulu, okungukuthi, ama-agent anciphisa amanzi. Inani le-adsorption nalo likhulu. Ngakho-ke, esimweni senani elifanayo le-ejenti yokunciphisa amanzi, umphumela we-plasticizing mubi kakhulu kusimende onobuhle obuphakeme.
Manje abanye abakhiqizi bakasimende bavame ukuthuthukisa amandla okuqala kasimende. Ukuze kulungiswe usimende, ukuze kuzuzwe umphumela ongcono we-plasticizing, kuyadingeka ukwandisa inani le-ejenti yokunciphisa amanzi. Ukusha nokushisa kukasimende kusha, futhi i-plasticizer ye-ejenti yokunciphisa amanzi Umehluko ohambisanayo mubi kakhulu. Lokhu kungenxa yokuthi impahla kagesi ephozithivu yesimende esisha inamandla futhi umthamo wokukhanga we-ejenti yokunciphisa amanzi mkhulu. Ukuphakama kwezinga lokushisa likasimende, kubi nakakhulu umphumela we-plasticizing we-ejenti yokunciphisa amanzi. Ukulahleka kokuwohloka nakho kuyashesha. Ngakho-ke, lapho izimboni ezithile zokukhiqiza ukhonkolo zisebenzisa ukhonkolo osanda kugaywa futhi osalahlekelwa ukushisa, izinga lokunciphisa amanzi liphansi futhi ukulahleka kokuwohloka kushesha kakhulu. Ngisho avele blender Chang condensation nokunye, kufanele sinake futhi kugwenywe.
Isikhathi sokuthumela: Jan-30-2023
