Lightweight Concrete Additives | High-Performance Foaming Agents for Cellular Concrete
Mhando dzakasiyana dzesimende, iyo plasticizing effect yemvura inoderedza agent yakasiyanawo.The mineral composition, makemikari kuumbwa uye chimiro chegypsum (se coagulant) ye simenti clinker ichakanganisa iyo plasticizing mhedzisiro yemvura inoderedza agent.Mukuwedzera, kunaka kwe simenti, rudzi uye huwandu hwezvinhu zvakasanganiswa, hutsva, mwando, uye tembiricha inogona kukanganisawo plasticizing mhedzisiro yemvura inoderedza mumiriri.
Iyo mineral composition inonyanya kukanganiswa neC3A uye C2S components.Simenti ine yakakwirira yeC3A inogadzirisa ine simba rakaipa-kuderedza mvura., izvo zvinodaro nekuti C3A inoshambadza iyo inoderedza mvura mumiririri yakakwira zvakanyanya kupfuura zvimwe zvicherwa (nguva shomanana yakakura kudarika C3S).Musanganiswa we slag une hushoma huwandu hwekushambadza kumvura inodzikisa agent.Mushure meiyo yekudzikisa mvura inosanganiswa mune simende slurry system., iyo C3A ine kukurumidza hydration kumhanya uye huwandu hukuru hwekushambadza. Naizvozvo, yakawanda yemvura inoderedza mumiririri inoshambadzirwa kutanga.Kuenzaniswa neiyo yakaderera C3A yemukati, iyo simende ine yakakwira C3A yemukati ine yakawanda adsorbent mvura yekudzikisa agent pasi peiyo imwechete yekudzikisa mvura agent uye yakafanana dosage.Izvo zvinozokanganisa kuwanda kwekuparadzira kunodiwa kune mamwe mamineral. (C3S, C2S, C4AF, etc.) mune simende slurry system, nokudaro kuratidza kusanaya kwemvura kwekongiri.Nechikonzero ichi, kana uwandu hwemvura inoderedza mumiririri inowedzerwa zvakakodzera kune simenti ine yakakwirira yeC3A, zvinokwanisika kuvandudza zvakanyanya fluidity.
Pakukuya simende clinker, imwe gypsum inowanzowedzerwa kuti ikuya pamwe chete, uye pano, gypsum inoshandiswa sechinhu chinoisa simende.Sezvo tembiricha yeguyo ichiwedzera panguva yekukuya., chikamu che dihydrate gypsum chinobviswa kushandura mvura yakanatswa kuita hemihydrate gypsum., kana kuti mvura yose yekristaro inobviswa kuti ishandurwe kuva anhydrite.Kuwedzera, kuitira kuchengetedza mari yekugadzira, zvimwe zvirimwa zvesimende zvinowanzoshandisa anhydrite kana maindasitiri ne-chigadzirwa gypsum (uyewo anhydrous gypsum) panzvimbo ye dihydrate gypsum sechinhu chinogadzirisa simenti.Zvisinei, kana simende inogadzirwa ikaedzwa zvinoenderana nezvinodiwa nesamende, musiyano mukuru hausi mukuru. Zvisinei, apo mvura inoderedza mumiririri inowedzerwa, dzimwe nguva inogona kuva yakasiyana plasticizing effect.Pakati pavo, iyo inonyanya kuzivikanwa ndeyekuti kana simende ine anhydrous gypsum se coagulant inorova huni calcium uye shuga calcium yekudzikisa mvura., kusapindirana kwakakomba kuchaitika.Hazviiti chete kuti zvibudirire zvinodiwa kuderedza mvura, asi zvakare kazhinji inokonzeresa kurasikirwa kwakanyanya kwe fluidity kana abnormal condensation.
Sezvo gypsum yemukati mu simenti inowedzera, iyo saturation point yemvura inoderedza agent inoderera nguva dzose, uye kuyerera kwe slurry panzvimbo yekuzara kunoderera nguva dzose.Iyo nzira ndeyokuti gypsum neC3A vanoita kuti vagadzire ettringite kuvhara pamusoro peC3A particles., kudzivirira C3A kubva pakuwedzera hydration, saka sulfate inogona kuvandudza kuwirirana kwemvura inoderedza agent uye simenti.Zvisinei, yakakwira sulfate yemukati ine mhedzisiro yakaipa pane kongiri, uye hazvibviri kuwedzera sulfate yakawanda kuitira kuti uvandudze kuwirirana.
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