Umthamo kanye nokusetshenziswa kwamanzi kwe-polycarboxylate superplasticizer:

I-Polycarboxylate superplasticizerinezici zomthamo ophansi kanye nokunciphisa amanzi aphezulu. Uma umthamo ungu-0.15-0.3%, izinga lokunciphisa amanzi lingafinyelela ku-18-40%. Kodwa-ke, lapho isilinganiso samanzi-to-binder sisincane (ngaphansi kuka-0.4), umthamo uzwela kakhulu kunalapho isilinganiso se-water-binder siphezulu. Izinga lokunciphisa amanzi lei-polycarboxylate superplasticizerkuyahlukahluka ngenani lempahla kasimende. Ngaphansi kwezimo ezifanayo, izinga lokunciphisa amanzi lesamba se-cementitious material engaphansi kuka-3 lingaphansi kuka-400kg/m3, futhi lo mehluko awunakwa kalula. Kodwa-ke, ohlelweni lokusetshenziswa, kuzotholakala ukuthi le ndlela yendabuko ye-empirical ayifanelekileI-Polycarboxylate superplasticizer, ikakhulukazi ngobaI-Polycarboxylate superplasticizerazwela kakhulu ekusetshenzisweni kwamanzi kunama-superplasticizers endabuko. Lapho ukusetshenziswa kwamanzi kuncishisiwe, ukusebenza okulindelekile kokhonkolo akukwazi ukufezwa; lapho ukusetshenziswa kwamanzi kuphezulu, nakuba i-slump iba nkulu, kuyoba khona ukopha okuningi ngisho nokuhlukaniswa okuncane, okunomthelela omubi ekusebenzeni jikelele kokhonkolo. Lokhu kuzodala ukuphazamiseka okuningi ekwakhiweni kwesizinda sangempela. Izinga lokushisa linethonya elikhulu inanii-polycarboxylate superplasticizer. Empeleni, kutholakala ukuthi inani lengxube elisetshenziswa ekukhiqizeni okuvamile emini liphansi ebusuku (izinga lokushisa lingaphansi kuka-15 ℃), futhi ukwehla kuvame ukuvela “Buyela kokukhulu”, ngisho nokopha nokuhlukaniswa.

Ukhonkolo uyakhetha kakhulu mayelana nendawo yokugcwala kanye nokusetshenziswa kwamanzi kwe-ejenti yokunciphisa amanzi. Uma inani eleqile selidlulile, ukhonkolo uzovela izinto ezingezinhle njengokuhlukaniswa, ukopha, ukugijima okuxekethile, ukuqina kanye nokuqukethwe komoya ngokweqile.

(1) Ukuhlolwa kwengxube yesilingo kufanele kwenziwe futhi ngezinto ezingavuthiwe ezishintshiwe ukuze kulungiswe umthamo ukuze kuzuzwe umphumela omuhle kakhulu;

(2) Umthamo wei-polycarboxylate superplasticizerfuthi ukusetshenziswa kwamanzi kakhonkolo kufanele kulawulwe ngokuqinile ngesikhathi sokusetshenziswa;

(3) Ekuhlolweni kukakhonkolo kwe-ejenti yokunciphisa amanzi yezinto zokusetshenziswa, zama ukulungisa i-ejenti yokunciphisa amanzi ibe uhlobo “oluvilaphayo” ukuze ufinyelele inhloso yokungazweli ezintweni zokusetshenziswa kanye nokusetshenziswa kwamanzi.