Self-compacting concrete (SCC) is a unique concrete with high flowability and can easily reach every corner of a form without requiring any external compaction effort. This makes it easier to place concrete in difficult situations and takes less time to place large sections while still providing greater strength and durability than nominal concrete. This study included the SCC mixture with a water-to-cement ratio of 0.6, and 5%, 10%, and 15% replacement of cement with Silica powder. Secondly, Concrete samples are cast and tested for mechanical and durability properties. Utilizing locally sourced materials, the highest quality of aggregates, cement, and additives are used in this study. The local suppliers have allowed us to maintain a sustainable and responsible approach to our research. This study is important because it tries to provide some data on the performance of SCC with different silica powders to see the feasibility of using silica powder in SCC. The results were quite impressive. The transformation density has increased by 10%, while the transformation density of silica powder has decreased by 15%. But that is not all—the research has also shown that Silica powder is responsible for pores that can lead to water absorption. So, the greater the percentage of Silica powder, the lower the water absorption will be. This means that to improve the performance of the product, reducing the amount of Silica powder is the way to go.