Mlingo ndi kumwa madzi kwa polycarboxylate superplasticizer:

Polycarboxylate superplasticizerali ndi makhalidwe a mlingo wochepa komanso kuchepetsa madzi kwambiri. Pamene mlingo ndi 0.15-0.3%, mlingo wochepetsera madzi ukhoza kufika 18-40%. Komabe, pamene chiŵerengero cha madzi-to-binder chili chaching'ono (pansi pa 0.4), mlingowu ndi wovuta kwambiri kusiyana ndi pamene chiŵerengero cha madzi-binder chimakhala chachikulu. Mlingo wochepetsera madzi wapolycarboxylate superplasticizerzimasiyanasiyana ndi kuchuluka kwa simenti. Pansi pazifukwa zomwezo, kuchepetsa madzi kwa kuchuluka kwa zinthu za simenti zosakwana 3 ndizochepera 400kg/m3, ndipo kusiyana kumeneku kumanyalanyazidwa mosavuta. Komabe, pogwiritsidwa ntchito, zidzapezeka kuti njira yachikhalidwe iyi si yoyeneraPolycarboxylate superplasticizer, makamaka chifukwaPolycarboxylate superplasticizeramakhudzidwa kwambiri ndi kumwa madzi kuposa ma superplasticizer achikhalidwe. Pamene kumwa kwa madzi kumachepetsedwa, ntchito yoyembekezeredwa ya konkire sikutheka; pamene kumwa madzi kumakhala kwakukulu, ngakhale kuti kugwa kumakhala kwakukulu, padzakhala magazi ambiri komanso ngakhale kupatukana pang'ono, komwe kumakhudza kwambiri ntchito yonse ya konkire. Izi zipangitsa kuti pakhale zovuta zambiri pakumanga malo enieni. Kutentha kumakhudza kwambiri kuchuluka kwapolycarboxylate superplasticizer. Pochita, zimapezeka kuti kuchuluka kwa kusakaniza komwe kumagwiritsidwa ntchito popanga masana kumakhala kochepa usiku (kutentha kumakhala kotsika kuposa 15 ℃), ndipo kutsika kumachitika nthawi zambiri "Kubwerera ku zazikulu", ngakhale kutuluka magazi ndi tsankho.

Konkire ndiyosankhira kwambiri malo okhala ndi madzi ochepetsa madzi. Kuchuluka kopitilira muyeso kukapitilira, konkire idzawoneka ngati zinthu zosasangalatsa monga kulekanitsa, kutuluka magazi, kuthamanga kwa slurry, kuuma komanso kuchuluka kwa mpweya.

(1) Kuyesa kusakaniza koyeserera kuyenera kuchitidwanso ndi zida zosinthidwa kuti zisinthe mlingo kuti zitheke bwino;

(2) Mlingo wapolycarboxylate superplasticizerndi kumwa madzi konkire kuyenera kuyendetsedwa mosamalitsa pakugwiritsa ntchito;

(3) Mu mayeso a konkire a wochepetsera madzi pazitsulo zopangira, yesetsani kusintha njira yochepetsera madzi kukhala mtundu wa "ulesi" kuti mukwaniritse cholinga chokhala osakhudzidwa ndi zopangira ndi madzi.