Strength Properties and Sulphate Resistance of Self-Compacting Concrete Incorporating Silica Fume and Metakaolin

Abstract

Abstract: Self-compacting concrete, or SCC, makes it possible to go over obstacles and get rid of vibration. Since 1988, SCC has been more and more well-liked in Japan, Europe, and the US due to the benefits it provides. SCC technology may reduce or perhaps completely eliminate concrete laying issues in difficult situations. Additionally, it reduces the number of times quality control tests need to be performed, saving time and effort. Quicker and less intricate in terms of placement and structure. When vibrating is not utilized, noise pollution is decreased. Concrete becomes more durable when SCC is used, particularly in parts with permeability defects or reinforcing congestion. The goal of this study is to look into how resistant self-compacting concrete made with metakaolin and silica fume is to sulfates and what its compressive and splitting tensile strengths are. Metakaolin and silica fume may also be used as cement substitutes at 5%, 10%, and 15% levels. The tests that are performed on the samples include sulfate, compressive resistance, and cracking tensile strength. On the seventh, 28th, and 56th days of life, a test is given. This experiment using self-compacting concrete from Metakolin and silica fume passed every plastic stage test with flying colors. Furthermore, the splitting tensile strength and hardened-stage compressive strength tests yielded good results. Comparing metakaolin with silica fume, the compressive strength increased by 15–45% and 18–38%, respectively. The use of metakaolin for cement and silica fume in the building process increased SCC's resistance to sulfate.