This research of using Feldspar in the production self compacting concrete (SCC) ( 5. 10. 15 )% as partial replacement by weight of cement . In this research some of fresh properties of SCC ( slump flow used V-funnel test and filling ability used ( U- box test ) for concrete mixes and also some of the harden properties of SCC ( compressive and flexural tests ). https://stilleners.shop/product-category/engine-components/