Post Date:19, Aug, 2024
4. Dambudziko rekupinda mumhepo
Munguva yekugadzira, polycarboxylic acid-yakavakirwa mvura yekudzikisa maajenti anowanzo chengetedza mamwe epamusoro anoshanda zvinhu izvo zvinoderedza kushushikana kwepasi, saka vane zvimwe zvinhu zvinopinza mweya. Izvi zvinoshandiswa zvinoshandiswa zvakasiyana kubva kune zvechinyakare air-entraining agents. Munguva yekugadzirwa kwemhepo-entraining agents, mamwe mamiriro ezvinhu anodiwa ekugadzirwa kwekugadzikana, yakanaka, yakavharwa mabhubhu anotorwa mukufunga. Izvi zvinoshandiswa zvinoshandiswa zvichawedzerwa kune air-entraining agent, kuitira kuti mabhuru anounzwa mukrete anogona kuva Inogona kusangana nezvinodiwa zvemhepo yemhepo pasina kukanganisa simba uye zvimwe zvinhu.
Munguva yekugadzirwa kwepolycarboxylic acid-yakavakirwa mvura yekudzikisa maajenti, mhepo yemukati dzimwe nguva inogona kunge yakakwira kusvika 8%. Kana yakashandiswa zvakananga, ichava nemigumisiro yakaipa pane simba. Naizvozvo, nzira iripo ndeyekubvisa furo kutanga uye wozopinza mweya. Defoaming agent vagadziri vanogona kazhinji kupa, nepo air-entraining agents dzimwe nguva inoda kusarudzwa nechikamu chekushandisa.
5. Matambudziko nedosage yepolycarboxylate mvura inoderedza agent
Muyero wepolycarboxylate yekudzikisa mvura mumiririri wakadzikira, mwero wekudzikisa mvura wakakwira, uye kudonha kunochengetwa zvakanaka, asi matambudziko anotevera anoitikawo mukushandisa:
① Muyero wakanyanya kuoma kana mvura-kune-simende reshiyo idiki, uye inoratidza mwero wepamusoro wekudzikisa mvura. Zvisinei, kana chiyero chemvura-ku-simende yakakura (pamusoro pe0.4), chiyero chekudzikisa mvura uye kuchinja kwayo hakusi pachena, izvo zvingave zvakabatana ne polycarboxylic acid. Iyo nzira yekuita yeasidhi-yakavakirwa mvura yekudzikisa mumiririri ine hukama nekupararira kwayo uye kuchengetedza mhedzisiro nekuda kweiyo steric hindrance mhedzisiro inoumbwa neiyo molecular chimiro. Kana mvura-binder reshiyo yakakura, pane nzvimbo yakakwana pakati pemamorekuru emvura mune simende dispersion system, saka nzvimbo iri pakati pepolycarboxylic acid mamorekuru The steric hindrance effect idiki.
② Kana huwandu hwesimende hwezvinhu hwakakura, pesvedzero yemuyero inova pachena. Pasi pemamiriro akafanana, mvura inoderedza mhedzisiro kana huwandu hwese hwesimende huri <300kg/m3 idiki pane yekudzikisa mvura kana huwandu hwesementitious huri> 400kg/m3. Uyezve, kana reshiyo yemvura-simende yakakura uye huwandu hwesimende hushoma, pachava nekuita kwepamusoro.
Polycarboxylate superplasticizer inogadzirwa kune yakakwirira-inoshanda kongiri, saka kuita kwayo uye mutengo zvinonyanya kukodzera kune yakakwirira-inoshanda kongiri.
6. Nezvekusanganiswa kwepolycarboxylic acid inoderedza mvura
Polycarboxylate mvura-inoderedza mishonga haigoni kusanganiswa ne naphthalene-based-water-reducing agents. Kana iyo miviri yekudzikisa mvura yakashandiswa mumudziyo mumwe chete, inovawo nekukanganisa kana isina kunyatsocheneswa. Naizvozvo, inowanzodikanwa kushandisa yakaparadzana seti yemidziyo yepolycarboxylic acid-yakavakirwa mvura yekudzikisa maajenti.
Zvinoenderana nemamiriro azvino ekushandiswa, iko kuenderana kwemhepo-entraining agent uye polycarboxylate yakanaka. Chikonzero chikuru ndechekuti huwandu hwemhepo-entraining agent yakaderera, uye inogona "kuenderana" ne polycarboxylic acid-based-water-reducing agent kuti iwedzere kuenderana. , inopindirana. Sodium gluconate mune retarder zvakare ine kuenderana kwakanaka, asi haina kuenderana nemamwe inorganic munyu additives uye inonetsa kusanganisa.
7. Nezve PH kukosha kwepolycarboxylic acid inoderedza mvura
Iyo pH kukosha kwepolycarboxylic acid-based-water-reducing agents yakadzikira pane yemamwe emhando yepamusoro-anoshanda ekudzikisa mvura, mamwe acho ari 6-7 chete. Naizvozvo, ivo vanofanirwa kuchengetwa mufiberglass, mapurasitiki nemimwe midziyo, uye haigone kuchengetwa mumidziyo yesimbi kwenguva yakareba. Ichaita kuti iyo polycarboxylate inoderedza mvura mumiriri iparare, uye mushure mekugara kwenguva refu acid corrosion, ichakanganisa hupenyu hwechigadziko chesimbi uye kuchengetedzwa kwekuchengetedza uye yekufambisa system.
Nguva yekutumira: Aug-19-2024
