Ntlafatso le ts'ebeliso eapolycarboxylic superplasticizere batla e potlakile. Haholo-holo mererong e meholo le ea bohlokoa joalo ka ho boloka metsi, motlakase oa metsi, boenjiniere ba hydraulic, boenjiniere ba leoatle le marokho, polycarboxylate superplastisizer e sebelisoa haholo.
Ka mor'a hore samente e kopane le metsi, slurry ea samente e etsa sebopeho sa flocculation ka lebaka la matla a limolek'hule a likaroloana tsa samente, e le hore 10% ho 30% ea metsi a kopanyang a phuthetsoe ka likaroloana tsa samente 'me a ke ke a kenya letsoho phallong ea mahala le lubrication, kahoo a ama Flowability ea motsoako oa konkreite. Ha supreplasticizer e phaella ka ho re, metsi-fokotsa moemeli limolek'hule ka directionally adsorbed holim'a likaroloana tsa samente, e le hore bokaholimo ba likaroloana samente na le qoso e tšoanang (hangata e mpe tefiso), ho etsa repulsion electrostatic, e leng khothalletsa batho ho qhalakanngoa bobeli ba likaroloana tsa samente le ho timetsoa ha flocculation sebopeho. , ho lokolla karolo ea metsi a phuthetsoeng ho kenya letsoho phallong, ka tsela eo ka katleho ho eketsa metsi a motsoako oa konkreite.
Sehlopha sa hydrophilic hose fokotsang metsie polar haholo, kahoo filimi ea adsorption ea moemeli ea fokotsang metsi holim'a likaroloana tsa samente e ka etsa filimi e tsitsitseng ea metsi a qhibilihisitsoeng ka limolek'hule tsa metsi. Filimi ena ea metsi e na le phello e ntle ea lubrication 'me e ka fokotsa ka katleho khanyetso ea ho thella pakeng tsa likaroloana tsa samente, kahoo e ntlafatsa ho feta ha metsi a seretse le konkreite.
The hydrophilic branched ketane kasuperplasticizersebopeho otlolla ka tharollo aqueous, ka tsela eo ho etsa hydrophilic tharo-dimensional adsorption lera le itseng botenya holim'a likaroloana tsa samente adsorbed. Ha likaroloana tsa samente li le haufi le tse ling, likarolo tsa adsorption li qala ho kopana, ke hore, tšitiso ea steric e etsahala pakeng tsa likaroloana tsa samente. Ha ho ntse ho fetana, ho na le tšitiso e kholoanyane ea steric, 'me ho na le tšitiso e kholo ea ho kopana pakeng tsa likaroloana tsa samente, ho etsa hore seretse le konkreite Slump e lule e le ntle.
Nakong ea ho lokisetsa mokhoa oa hopolycarboxylate e fokotsang metsi, liketane tse ling tse nang le makala li hlomathiseletsoa limolek'huleng tsa ntho e fokotsang metsi. Ketane ena ea lekala ha e fane feela ka phello ea steric tšitiso, empa hape, sebakeng se phahameng sa alkalinity sa samente hydration, Ketane ea lekala e ka boela ea khaoloa butle-butle, ka tsela eo e lokolla acid ea polycarboxylic ka phello ea ho qhalakanngoa, e ka ntlafatsang phello ea ho hasana ha likaroloana tsa samente le ho laola tahlehelo ea ho thella.
Nako ea poso: Mar-29-2024