ew da mafi girma da bukatun ga yi na kankare.Tun da gabatarwa na kankare admixtures a cikin 1940s, da ci gaban ba kawai canza cikin ciki tsarin na taurare kankare daga microscopic da submicroscopic matakan, amma kuma canza tsarin na sabo kankare a cikin tsari. .Admixture na kankare, wanda kuma aka sani da dispersant ko filastik, shine mafi yawan amfani da mahimmancin haɗakarwa.

Don shirya sabobin kankare tare da kyawawan kaddarorin kwarara, tsarin danko wanda ke rage kwararar ruwa tsakanin simintin siminti dole ne a tarwatsa su, ta yadda za a iya tarwatsa simintin siminti a cikin matsakaicin ruwa.Akwai kaddarorin da yawa waɗanda ke shafar haɗin siminti, irin su ma'adinan ma'adinai na siminti, siffar da girman simintin siminti, amincin ma'adinai crystallization, da yanayin aiki da abubuwan muhalli.Abubuwan da ke sama kai tsaye ko a kaikaice suna sarrafa kwanciyar hankali na siminti a cikin slurry.Matsakaicin yanayi daban-daban na iya canza darajar cajin lantarki na simintin siminti a cikin slurry, wato, canza rikitar da wutar lantarki tsakanin barbashi.

Lokacin da adadin da ya dace na simintin siminti an ƙara shi zuwa sabon siminti, maki na simintin siminti suna ƙaruwa, kuma juzu'in wutar lantarki tsakanin simintin siminti yana ƙaruwa sosai, yana haifar da raguwar danko na sabon siminti, wanda ke haɓaka kwanciyar hankali. duk tsarin watsawa.ya karu, kuma kudin ruwa ya inganta.

Gabaɗaya, ƙara adadin da ya dace na simintin siminti na iya haɓaka sabon siminti don nuna thixotropy mai ƙarfi.Wannan shi ne saboda samuwar wani solvated fim Layer a kan saman simintin barbashi adsorbed zuwa ruwa rage wakili da kuma karuwa da m.Idan akwai ɗan girgiza, zai nuna mafi kyawun ruwa.The thixotropy na sabo ne kankare ba tare da superplasticizer ya fi rauni.