Abubuwan Kariyar Kankare Masu Sauƙi | Mahimman Ayyuka Masu Kumfa don Kankalin Salon salula
A cikin 'yan shekarun da suka gabata, masu bincike sun yi ta ƙoƙarin faɗaɗa tushen tushe polycarboxylic acid superplasticizers da haɓaka ƙarfin tarwatsa su. Wadannan admixtures ba wai kawai tasiri a rage yawan ruwa ba amma kuma suna da sakamako mai kyau na retarding akan ciminti hydration kuma sune 'yan takara masu kyau don aikace-aikacen kankare mai girma..
A cikin wannan binciken, Abubuwan rheological na Fubelite sulfoaluminate ciminti gauraye da daban-daban admixtures na aiki da aka yi amfani da Viskomat XL rheometer. (Schleibinger). Sakamakon ya nuna cewa ƙari na polycarboxylic acid superplasticizers muhimmanci inganta rheology na kankare; idan aka kwatanta da samfurin blank, samfurin 2 dauke da aikin farko-karfin polycarboxylic acid babban aikin rage yawan ruwa Z yana nuna yawan ruwa mai yawa da ƙananan dankowar filastik.. Bugu da kari, Ƙarƙashin ƙyalli na samfurori a hankali yana raguwa tare da ƙara yawan adadin ruwa mai raguwa, wanda ke nuna tasiri mai tasiri na retarding na wannan admixture akan halayen siminti hydration.
Tasirin jinkirin wakili mai rage ruwa na polycarboxylic acid shine saboda tsarinsa na kwayoyin halitta, wanda ya ƙunshi ƙungiyoyin ether da carboxyl waɗanda ke tallata su a saman sassan siminti. Wadannan ayyuka suna hana ruwa ruwa na kwayoyin halitta ta hanyar kare kwayoyin siminti, don haka tsarin hydration ya jinkirta sosai2.
Tsananin tsangwama na polycarboxylic acid high-performance adducts shima zai iya taka muhimmiyar rawa a wannan yanayin., tun da dogon gefen sassan waɗannan admixtures suna fitowa a cikin maganin pore kuma suna haifar da tasiri mai mahimmanci.. A kwatanta, Ma'aikatan rage ruwa na tushen naphthalene kawai sun ƙunshi ƙungiyoyin sulfonic acid tare da guntun sarƙoƙi na gefe da rauni mai rauni., wanda kuma ba zai iya jinkirta hydration na ruwa ba.