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 motsoako a phuthetsoe ka likaroloana tsa samente 'me a ke ke a kenya letsoho phallong ea mahala le lubrication. , kahoo e ama Flowability ea motsoako oa konkreite. Ha supreplasticizer e eketsoa, limolek'hule tsa moemeli oa ho fokotsa metsi li ka tsamaisoa ka tataiso holim'a likaroloana tsa samente, e le hore libaka tsa likaroloana tsa samente li be le tefiso e tšoanang (hangata tefiso e mpe), ho etsa electrostatic repulsion, e khothalletsang ho kopana. ho hasana ha likaroloana tsa samente le ho senyeha ha sebopeho sa flocculation. , 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 e nang le makala ha e fane feela ka phello ea tšitiso ea steric, empa hape, tikolohong e phahameng ea alkalinity ea samente hydration, ketane ea lekala e ka boela ea khaoloa butle-butle, ka tsela eo e lokolla polycarboxylic acid e nang le phello ea ho qhala, e ka ntlafatsang phello ea ho hasana ea likaroloana tsa samente. laola tahlehelo ea ho putlama.
Nako ea poso: Mar-29-2024