Redispersible polymer powder (RDP) ke copolymer ea vinyl acetate le ethylene, haholo-holo e sebelisoang e le se tlamang thepa ea kaho. E ntlafatsa matla, ho tšoarella le ho khomarela lihlahisoa tse entsoeng ka samente ka ho etsa filimi e tsitsitseng nakong ea ho thatafala. RDP ke phofo e tšoeu e omeletseng e hlokang ho qhaloa hape ka metsing pele e sebelisoa. Thepa le viscosity ea RDP ke lintlha tsa bohlokoa kaha li ama boleng ba sehlahisoa sa ho qetela. Sengoliloeng sena se hlalosa ts'ebetso ea RDP le mekhoa ea tlhahlobo ea viscosity e ka thusang bahlahisi ho ntlafatsa boleng ba sehlahisoa le ho netefatsa khotsofalo ea bareki.
Mokhoa oa tlhahlobo ea ts'ebetso ea RDP
Mokhoa oa tlhahlobo ea tšebetso ea RDP o etselitsoe ho lekola bokhoni ba RDP ho ntlafatsa ts'ebetso ea lihlahisoa tse thehiloeng ho samente. Mokhoa oa ho etsa liteko o tjena:
1. Ho lokisetsa lintho tse bonahalang
Lokisetsa lisebelisoa tse latelang: RDP, samente ea Portland, lehlabathe, metsi le polasetiki. Kopanya samente ea Portland le lehlabathe ka karolelano ea 1: 3 ho fumana motsoako o omileng. Lokisetsa tharollo ka ho kopanya metsi le polasetiki ka karolelano ea 1: 1.
2. kopanya
Kopanya RDP le metsi ka blender ho fihlela ho fumanoa slurry ea homogeneous. Kenya slurry ho motsoako o omileng ebe o kopanya metsotso e 2. Kenya tharollo ea polasetiki ea metsi 'me u kopanye metsotso e meng e 5. Motsoako o hlahisoang o lokela ho ba le motsoako o teteaneng, o monate.
3. Etsa kopo
U sebelisa trowel, jala motsoako ka botenya ba 2mm sebakeng se hloekileng, se omeletseng, se bataletseng. Sebelisa rolara ho boreleli holim'a metsi le ho tlosa li-bubble tsa moea. Etsa hore lisampole li fole ka mocheso oa kamore matsatsi a 28.
4. Tlhahlobo ea ts'ebetso
Mehlala e phekotsoeng e ile ea hlahlojoa bakeng sa thepa e latelang:
- Matla a hatellang: Matla a hatellang a lekantsoe ho sebelisoa mochini oa tlhahlobo oa bokahohle. Matla a hatellang a lokela ho ba holimo ho feta sampole ea taolo ntle le RDP.
- Flexural Strength: Matla a ho feto-fetoha a lekantsoe ho sebelisoa tlhahlobo ea lintlha tse tharo. Matla a feto-fetohang a lokela ho ba holimo ho feta sampole ea taolo ntle le RDP.
- Matla a Sekhomaretsi: Matla a sekhomaretsi a lekanngoa ho sebelisoa tlhahlobo ea ho hula. Matla a bonto a lokela ho ba holimo ho feta sampole ea taolo ntle le RDP.
- Ho hanyetsa metsi: Mehlala e phekotsoeng e ile ea qoelisoa ka metsing ka lihora tse 24 'me thepa e ile ea hlahlojoa hape. Ts'ebetso ea eona ha ea lokela ho ameha haholo kamora ho kopana le metsi.
Mokhoa oa tlhahlobo ea ts'ebetso ea RDP o ka fana ka lintlha tsa sepheo le palo mabapi le katleho ea RDP ho ntlafatsa ts'ebetso ea lihlahisoa tse thehiloeng ho samente. Baetsi ba ka sebelisa mokhoa ona ho ntlafatsa litlolo tsa RDP le ho netefatsa boleng bo tsitsitseng ba sehlahisoa.
Mokhoa oa Teko oa RDP Viscosity
Mokhoa oa tlhahlobo ea viscosity ea RDP o etselitsoe ho lekola boits'oaro ba phallo ea RDP metsing. Mokhoa oa ho etsa liteko o tjena:
1. Ho lokisetsa lintho tse bonahalang
Lokisetsa lisebelisoa tse latelang: RDP, metsi a hloekisitsoeng, viscometer, le mokelikeli oa calibration. Lethathamo la viscosity ea mokelikeli oa calibration e lokela ho tšoana le viscosity e lebelletsoeng ea RDP.
2. Tekanyo ea viscosity
Lekanya viscosity ea mokelikeli oa calibration ka viscometer mme o tlalehe boleng. Hloekisa viscometer 'me u tlatse ka metsi a deionized. Lekanya viscosity ea metsi 'me u tlalehe boleng. Eketsa palo e tsejoang ea RDP metsing 'me u hlohlelletse ka bonolo ho fihlela motsoako oa homogeneous o fumanoa. Etsa hore motsoako o lule metsotso e 5 ho felisa li-bubble tsa moea. Lekanya viscosity ea motsoako ka viscometer mme o tlalehe boleng.
3. Bala
Bala viscosity ea RDP metsing u sebelisa foromo e latelang:
RDP Viscosity = (Motsoako Viscosity – Water Viscosity) / (Calibration Fluid Viscosity – Water Viscosity) x Calibration Fluid Viscosity
Mokhoa oa tlhahlobo ea viscosity ea RDP o fana ka sesupo sa hore na RDP e hasana habonolo hakae metsing. Ha viscosity e phahame, ho thata le ho feta ho redispersibility, ha viscosity e theohile, e potlakisa ebile e phethehile haholoanyane. Baetsi ba ka sebelisa mokhoa ona ho lokisa sebopeho sa RDP le ho etsa bonnete ba hore e ka boela ea qhaloa hape.
ha re phethela
Thepa ea RDP le mekhoa ea tlhahlobo ea viscosity ke lisebelisoa tsa bohlokoa tsa ho lekola boleng ba li-RDP le ho ntlafatsa libopeho tsa tsona. Ka ho sebelisa mekhoa ena, bahlahisi ba ka etsa bonnete ba hore lihlahisoa tsa bona tsa RDP li kopana le ts'ebetso e hlokahalang le litlhaloso tse bonolo tsa tšebeliso, kahoo ba eketsa khotsofalo le botšepehi ba bareki. Baetsi ba eletsoa ho latela mekhoa ea tlhahlobo e tloaelehileng le ho sebelisa lisebelisoa tse lekantsoeng ho netefatsa liphetho tse nepahetseng le tse tšepahalang. Ha theknoloji ea RDP e ntse e tsoela pele ho ntlafala, tlhokahalo ea lihlahisoa tsa RDP tse sebetsang hantle le tse bonolo ho e sebelisa e lebelletsoe ho eketseha nakong e tlang.
Nako ea poso: Sep-04-2023