Abubuwan Kariyar Kankare Masu Sauƙi | Mahimman Ayyuka Masu Kumfa don Kankalin Salon salula
A siminti ruwa rage wani abu ne na sinadaran da ke rage yawan ruwan da ake amfani da shi a cikin kankare. Wannan raguwar ruwa yana ba da damar siminti don yin ruwa a ƙasa kaɗan, yana ba shi mafi kyawun ƙarfi da karko.
Ragewar ruwa mai ƙarancin iyaka, wanda kuma aka sani da masu rage ruwa na al'ada ko na yau da kullun na filastik, yawanci rage yawan ruwa a cikin cakuda ta 5 ku 10%. Ana amfani da waɗannan masu rage ruwa a aikace-aikacen kankare na yau da kullun kamar hanyoyin mota, hanyoyin tafiya, da bangon gida.
Masu rage ruwa tsaka-tsaki, kuma ana kiranta masu yin filastik ko tsaka-tsakin filastik, yawanci rage adadin simintin da ake buƙatar haɗawa da shi 15 ku 20%. Ana amfani da waɗannan admixtures sau da yawa a cikin kankare don aikin lallashi, kamar titin mota da titina, saboda suna rage ruwan da ake buƙata don samar da yanayi mai kyau.
Masu rage yawan ruwa, kuma an san su zama superplasticizers ko babban kewayon admixtures, su ne roba mai narkewa kwayoyin mahadi da rage adadin ruwa a kankare ta 25 ku 30%. Wannan yana haifar da mafi girma fluidity na kankare, ƙyale shi ya ɓullo da kyau da kuma samar da ƙarin sassauci ga wurare.
Wadannan admixtures yawanci ana ƙara su zuwa gaurayar kankare a ƙaramin adadin adadin, ko da yake wasu manyan abubuwan haɗin gwiwa suna buƙatar ƙarin kashi don ingantaccen aiki.
Yawancin waɗannan abubuwan haɗin gwiwa ba su da tasiri akan hydration na siminti, amma wasu – kamar polycarboxylates – na iya ƙara haɓakar iska. Wannan zai bambanta dangane da sunadarai na admixture da adadin adadin sa. Yana da mahimmanci don zaɓar abin da ya dace don aikace-aikacen.