Kana iyo polycarboxylic acid-yakavakirwa yakakwirira-inoshanda superplasticizer (mvura inoderedza agent) inowedzerwa muhuwandu hwe 0.2% kusvika 0.3% yehuwandu hwemasimende, chiyero chekudzikisa mvura chinogona kusvika 25% kusvika 45%. Zvinowanzotendwa kuti iyo polycarboxylic acid-yakavakirwa yakakwirira-inoshanda-inoderedza mvura mumiriri ine muzinga wakaita muzinga, unoburitsa steric chipingamupinyi mhedzisiro nekushambadza pane simende zvimedu kana simende hydration zvigadzirwa, uye inoita basa mukuparadzira nekuchengetedza kupararira kwesimende. Kuongorora kweadsorption maitiro emvura inoderedza maajenti ari pamusoro pe gypsum particles uye adsorption-dispersion mechanism yakaratidza kuti iyo polycarboxylic acid-based high-effect-effecting water-reducation agent is a comb-shaped adsorption, ine chidimbu chemadsorption pamusoro pegypsum repulsion uye isimba repulsion. Mhedzisiro yaro yekuparadzira inonyanya kuuya kubva kune steric hindrance mhedzisiro yeiyo adsorption layer. Iyo dispersibility inogadzirwa neiyo steric hindrance athari haina kukanganiswa neiyo hydration yegypsum, uye nekudaro ine yakanaka kupararira kugadzikana.
Cement ine kugadzirisa-kusimudzira maitiro mugypsum, iyo inomhanyisa nguva yekugadzika yegypsum. Kana iyo dosi inodarika 2%, ichave nemhedzisiro yakakosha pamvura yekutanga, uye fluidity inodzikira nekuwedzera kwesamende dosage. Sezvo simende ine gadziriro-yekusimudzira maitiro pagypsum, kuitira kuderedza kukanganiswa kwegypsum kuisa nguva pagypsum fluidity, huwandu hwakakodzera hwegypsum retarder hunowedzerwa kune gypsum. Iyo fluidity yegypsum inowedzera nekuwedzera kwesamende dosage; Kuwedzerwa kwesementi kunowedzera alkalinity yegadziriro, zvichiita kuti mvura inoderedza iparadzanise nekukurumidza uye zvakakwana muhurongwa, uye iyo inoderedza mvura inowedzerwa zvakanyanya; panguva imwecheteyo, sezvo mvura inoda simenti pachayo yakaderera, yakaenzana nekuwedzera mvura-simenti reshiyo pasi pehuwandu hwekuwedzera kwemvura, iyo inowedzerawo fluidity zvishoma.
Polycarboxylate mvura inodzikisira ine yakanakisa dispersibility uye inogona kuvandudza zvakanyanya fluidity yegypsum pamwero wakaderera. Nekuwedzera kweyero, iyo fluidity yegypsum inowedzera zvakanyanya. Polycarboxylate mvura inoderedza ine simba rekudzoreredza mhedzisiro. Nekuwedzera kweyero, nguva yekuisa inowedzera zvakanyanya. Nekudzoreredza kwakasimba kwepolycarboxylate mvura inodzikisira, pasi peyero yemvura-kune-simende, kuwedzera kwedosi kunogona kukonzera deformation yegypsum crystals uye kusunungurwa kwegypsum. Iyo inoshanduka uye inomanikidza masimba egypsum inoderera nekuwedzera kwedosi.
Polycarboxylate ether inoderedza mvura inoderedza kuseta kwegypsum uye kuderedza simba rayo. Panguva imwecheteyo, kuwedzera simenti kana calcium oxide kune gypsum inovandudza fluidity yayo. Izvi zvinoderedza mvura-kune-simende ratio, inowedzera kuwanda kwegypsum, uye nokudaro simba rayo. Uyezve, iyo inosimbisa mhedzisiro yesimende hydration zvigadzirwa pagypsum inowedzera kushanduka kwayo uye kumanikidza simba. Kuwedzera huwandu hwesimende uye calcium oxide inowedzera fluidity yegypsum, uye huwandu hwakakodzera hwesimende hunogona kuvandudza zvakanyanya simba rayo.
Paunenge uchishandisa polycarboxylate ether inoderedza mvura mugypsum, kuwedzera huwandu hwakakodzera hwesimende hakungowedzere simba rayo asiwo kunopa hukuru hwekuyerera nekukanganisa kushoma pane yayo yekumisikidza nguva.
Nguva yekutumira: Aug-06-2025