Effect of Partial Replacement of Cement with Marble Dust Powder using Steel Fiber on Strength Parameters of Self Compacting Concrete

Self-Compacting concrete is a type of concrete that gets compacted under its self-weight. It’s commonly abbreviated as SCC and defined as the concrete which can placed and compacted into every corner of a formwork; purely means of its self-weight by eliminating the need of either external energy input from vibrators or any type of compacting effort. In this study, the effect of replacing the cement by marble dust powder with (5%, 10%, 20%) respectively and steel fibers (2%) their combinations of various proportions on the properties of Self compacting concrete has been compared. Properties of compressive strength, split tensile strength and flexural strength of Concrete were determined. However, the results of this study suggest that MARBLE DUST powder (10%),steel fibers (2%) combinations can improve the workability of Self compacting concrete, more than conventional concrete and while their using separate. Marble is a metamorphic rock resulting from the transformation of a pure limestone. The purity of the marble is responsible for its colour and appearance: it is white if the limestone is composed solely of calcite (100% CaCO3). Marble is used for construction and decoration; marble is durable, has a noble appearance, and is consequently in great demand. Chemically, marbles are crystalline rocks composed predominantly of calcite, dolomite or serpentine minerals. The other mineral constituents vary from origin to origin. Quartz, muscovite, tremolite, actinolite, micro line, talc, garnet, osterite and biotite are the major mineral impurities whereas SiO2, limonite, Fe2O3, manganese, 3H2O and FeS2 (pyrite) are the major chemical impurities associated with marble.