A ci gaba da aikace-aikace napolycarboxylic superplasticizeryana da saurin sauri.Musamman a cikin manyan ayyuka masu mahimmanci kamar kiyaye ruwa, wutar lantarki, injiniyan ruwa, injiniyan ruwa, da gadoji, ana amfani da polycarboxylate superplastisizer sosai.
Bayan an haxa siminti da ruwa, slurry ɗin siminti yana samar da tsarin flocculation saboda nauyin ƙwayoyin ƙwayoyin simintin, wanda ya sa kashi 10 zuwa 30% na ruwan hadawa an naɗe shi a cikin sassan siminti kuma ba zai iya shiga cikin kwararar ruwa da lubrication kyauta ba. , don haka yana shafar Flowability na kankare mix.Lokacin da aka ƙara supreplasticizer, za'a iya ƙara ƙwayoyin cuta masu rage ruwa a saman simintin siminti, ta yadda sassan simintin suna da caji iri ɗaya (yawanci cajin mara kyau), suna haifar da electrostatic repulsion, wanda ke inganta juna. tarwatsa sassan siminti da lalata tsarin flocculation., Saki wani ɓangare na ruwan nannade don shiga cikin kwararar ruwa, ta yadda ya kamata ya ƙara yawan ruwa na cakuda kankare.
Ƙungiyar hydrophilic a cikinwakili mai rage ruwane sosai iyakacin duniya, don haka da ruwa-rage wakili adsorption fim a saman da siminti barbashi iya samar da wani barga narkar da ruwa fim da ruwa kwayoyin.Wannan fim na ruwa yana da sakamako mai kyau na lubrication kuma zai iya rage girman juriya tsakanin simintin siminti, don haka ya kara inganta yawan ruwa na turmi da kankare.
Sarkar reshen hydrophilic a cikinsuperplasticizertsarin shimfidawa a cikin ruwa mai ruwa bayani, game da shi forming wani hydrophilic uku-girma adsorption Layer tare da wani kauri a saman da adsorbed siminti barbashi.Lokacin da barbashi na siminti suna kusa da juna, nau'in tallan tallace-tallace sun fara farawa, wato, tsangwama mai tsauri yana faruwa a tsakanin sassan siminti.Da yawan zoba, mafi girma sric tunkude, kuma mafi girma da cikas ga haɗin gwiwa tsakanin siminti barbashi, yin turmi da kankare Slump ya kasance mai kyau.
A lokacin shirye-shiryen tsari napolycarboxylate mai rage ruwa, wasu sarƙoƙi masu reshe ana ɗaure su a kan ƙwayoyin cuta na wakili mai rage ruwa.Wannan sarkar reshe ba wai kawai tana ba da sakamako mai hanawa ba, har ma, a cikin yanayin babban alkalinity na ciminti hydration, sarkar reshe kuma za a iya yanke shi sannu a hankali, ta haka ta saki polycarboxylic acid tare da tasirin watsawa, wanda zai iya haɓaka tasirin rarrabuwar siminti sarrafa slump asarar.
Lokacin aikawa: Maris 29-2024