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Aikace-aikacen polycarboxylate Superplasticizer a cikin gypsum

Lokacin da polycarboxylic acid na tushen babban inganci superplasticizerwakili mai rage ruwa) an ƙara shi a cikin adadin 0.2% zuwa 0.3% na yawan adadin siminti, rage yawan ruwa zai iya zama kamar 25% zuwa 45%. An yi imani da cewa polycarboxylic acid-tushen high-ingancin ruwa mai rage wakili yana da tsari mai siffar tsefe, wanda ke haifar da sakamako mai banƙyama ta hanyar adsorbing a kan simintin siminti ko samfuran hydration na siminti, kuma yana taka rawa wajen tarwatsawa da kiyaye watsawar siminti. Nazarin halayen haɓakar abubuwan da ke rage ruwa a saman gypsum barbashi da tsarin watsawa-watsawa ya nuna cewa polycarboxylic acid na tushen babban tasiri mai rage yawan ruwa shine nau'in nau'in tsefe, tare da ƙaramin adadin adsorption akan farfajiyar gypsum da raunin raunin electrostatic. Tasirinsa na tarwatsewa ya fito ne daga tasirin hanawa na Layer adsorption. Rarrabawar da aka samu ta hanyar ƙwaƙƙwarar hanawa mai mahimmanci ba ta da tasiri ta hanyar hydration na gypsum, don haka yana da kwanciyar hankali mai kyau.

polycarboxylate Superplasticizer

Siminti yana da tasiri mai haɓakawa a cikin gypsum, wanda zai hanzarta saita lokacin gypsum. Lokacin da adadin ya wuce 2%, zai yi tasiri mai mahimmanci a kan farkon ruwa, kuma ruwa zai lalace tare da karuwar siminti. Tun da ciminti yana da tasiri mai haɓakawa akan gypsum, don rage tasirin lokacin saita gypsum akan ruwa na gypsum, an ƙara adadin gypsum retarder mai dacewa a cikin gypsum. Rashin ruwa na gypsum yana ƙaruwa tare da karuwar adadin siminti; Bugu da ƙari na ciminti yana ƙara yawan alkalinity na tsarin, yana sa mai rage ruwa ya rabu da sauri da kuma gaba daya a cikin tsarin, kuma tasirin rage ruwa yana inganta sosai; a lokaci guda, tun da bukatar ruwa na siminti kanta ba ta da yawa, yana daidai da ƙara yawan simintin ruwa a ƙarƙashin adadin adadin ruwa iri ɗaya, wanda kuma zai ƙara yawan ruwa kadan.
Mai rage ruwa na Polycarboxylate yana da kyakkyawan tarwatsewa kuma yana iya haɓaka yawan ruwan gypsum a ƙaramin sashi. Tare da karuwar sashi, yawan ruwa na gypsum yana ƙaruwa sosai. Mai rage ruwa na Polycarboxylate yana da tasiri mai ƙarfi. Tare da karuwar sashi, lokacin saitin yana ƙaruwa sosai. Tare da tasirin raguwa mai ƙarfi na mai rage ruwa na polycarboxylate, a ƙarƙashin daidaitaccen ruwa-zuwa siminti, haɓakar sashi na iya haifar da nakasar lu'ulu'u na gypsum da sassautawar gypsum. Ƙarfin sassauƙa da matsawa na gypsum yana raguwa tare da karuwar sashi.
Polycarboxylate ether masu rage ruwa suna jinkirta saitin gypsum kuma suna rage ƙarfinsa. A daidai wannan sashi, ƙara siminti ko calcium oxide zuwa gypsum yana inganta yawan ruwa. Wannan yana rage yawan ruwa zuwa siminti, yana ƙara yawan gypsum, don haka ƙarfinsa. Bugu da ƙari kuma, ƙarfin ƙarfafawa na samfuran hydration na siminti akan gypsum yana ƙara ƙarfin sassauƙa da matsawa. Ƙara yawan siminti da calcium oxide yana ƙara yawan ruwa na gypsum, kuma adadin da ya dace na siminti zai iya inganta ƙarfinsa sosai.
Lokacin amfani da polycarboxylate ether masu rage ruwa a cikin gypsum, ƙara adadin siminti da ya dace ba kawai yana ƙara ƙarfinsa ba amma yana ba da mafi yawan ruwa tare da ƙaramin tasiri akan lokacin saita shi.


Lokacin aikawa: Agusta-06-2025