Surkhi is a fine powdered substance extracted from ashes of burnt clay in which remnants of burnt bricks or clay are found. Because of the pozzolanic character of Surkhi it can be thought to be an environmentally friendly supplement to other SCM such as Fly Ash (FA) and slag. This research work examines the characteristics of Self-Compacting Concrete (SCC) with Surkhi brick powder as a replacement material for FA. The experimental methodology involves mixing various proportions of Surkhi brick powder with SCC constituent materials, where after subjecting the mixed materials to standard tests focusing on the fresh and hardened properties, such as durability, Flexural Strength (FS), Split Tensile Strength (STS) and Compressive Strength (CS). According to the Okamura method five mix proportions were proposed. The flowability tests used in this research include the slump flow, J-Ring test, V-funnel, U-tube filling height, and L-box which were used to assess passing ability of SCC. The first was the control mix with 0% surkhi and the other four mixes contained surkhi in partial replacement of FA at 20%, 40%, 60% and 80%. The control SCC had a CS of 34.3MPa for 90 days and after using surkhi by the replacement of 60% FA the CS increased to 37.52MPa at the same age level of 90 days but for 40% as well as 80% replacement level, the average loss was 35.81MPa and 32.05MP.
Self-Compacting Concrete (SCC), Fly Ash, Surkhi, Okamura method
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