Kwanan Wata:5,Mayu,2022

Lokacin da aka gauraya siminti da ruwa, saboda sha'awar juna tsakanin kwayoyin siminti, karon motsi na thermal na siminti a cikin maganin, sabanin cajin ma'adinan siminti yayin aikin hydration, da kuma takamaiman haɗin ruwan da aka narkar da shi. fim bayan an shayar da ma'adinan siminti. hade, ta yadda siminti slurry ya samar da tsarin flocculation. Ruwan ruwa mai yawa yana nannade cikin tsarin flocculation, ta yadda ba za a iya haɗuwa da simintin siminti ba tare da ruwa, wanda ya haifar da karuwa a cikin ruwa da rashin nasarar cimma aikin da ake bukata.

Bayan ƙara superplasticizer, ƙungiyar hydrophobic na cajin superplasticizer molecule ana sanya shi a kai tsaye a saman simintin siminti, ƙungiyar hydrophilic kuma tana nuna maganin ruwa, suna samar da fim ɗin adsorption a saman simintin siminti, don haka saman. na siminti yana da caji iri ɗaya. Ƙarƙashin aikin ƙin wutar lantarki, sassan siminti sun rabu da juna, kuma tsarin flocculation na simintin slurry ya rushe. A gefe guda, ruwan kyauta a cikin tsarin flocculation na simintin slurry an saki, wanda ya kara yawan hulɗar da ke tsakanin sassan siminti da ruwa, don haka ƙara yawan ruwa na cakuda; Bugu da ƙari, zamewar da ke tsakanin siminti kuma yana ƙaruwa saboda kauri na fim ɗin ruwa da aka kafa a saman sassan siminti. Wannan ita ce ka'idar cewa masu rage ruwa suna rage yawan amfani da ruwa saboda adsorption, watsawa, jika da lubrication.

Ƙa'ida: A takaice dai, wakili mai rage ruwa yawanci shine surfactant wanda ke yaduwa a saman sassan siminti, yana sa barbashi su nuna halayen lantarki. Barbasar na tunkude juna saboda cajin wutar lantarki daya, ta yadda simintin ya watse, sannan a saki ruwan da ya wuce gona da iri a tsakanin barbashi domin rage ruwan. A gefe guda, bayan ƙara wakilin rage ruwa, an samar da fim ɗin adsorption a saman simintin siminti, wanda ke shafar saurin hydration na siminti, yana sa haɓakar crystal na simintin slurry ya zama cikakke, tsarin hanyar sadarwa ya fi kyau. m, da kuma inganta ƙarfi da tsarin yawa na siminti slurry.

Lokacin da slump na kankare ne m guda, admixture da zai iya rage yawan ruwa ake kira kankare water reducer. Ruwan rage wakili ya kasu kashi na yau da kullun na rage ruwa da wakili mai rage ruwa mai inganci. Masu rage ruwa kasa da kashi 8% ana kiransu masu rage ruwa na yau da kullun, kuma wadanda suka rage sama da kashi 8% ana kiransu masu rage ruwa mai inganci. Dangane da illolin da superplasticizers ke iya kawowa a kan kankare, an raba su zuwa superplasticizers masu ƙarfi da wuri da superplasticizers masu haɓaka iska.

Ta hanyar gabatar da aikin ƙara wakili mai rage ruwa zuwa ma'aunin warkarwa, muna da cikakkiyar fahimta game da matsalar ƙara mai rage ruwa a cikin ginin ma'aunin maganin hatimi. A cikin sauƙi, rawar da rage ruwa wakili ne mai aiki mai aiki, wanda zai iya sa simintin siminti ya gabatar da electrode iri ɗaya, kuma ya saki ruwan tsakanin kwayoyin halitta ta hanyar halayen jiki na wannan cajin cajin, ta haka ne ya rage ruwa.