EFFECT OF WOLLASTONITE POWDER IN SELF COMPACTING CONCRETE

CIVIL ENGINEERING

The use of additive material such as silica-fume, fly ash, GGBS, micro-silica etc. in self compacting concrete is now a days very vital for purpose of research. A Concrete which doesn’t require compaction or vibration to settle down is termed as self compacting concrete means which is compacted by its own weight. Self compacting concrete is used for concreting in congested area where normal concrete can’t reach. Wollastonite (calcium meta-silicate) is a natural material that consists of calcium silica oxides. This research program focused on evaluating the feasibility of using wollastonite in concrete or mortar. The experimental program for this study is designed to investigate the fresh properties and strength contribution for mortar cubes with wollastonite at 0% to 25% replacement with ordinary Portland cement. Study lead us to replace wollastonite powder at different percentage (0%, 5%, 10%, 15%, 20%, and 25%) and fly ash of constant percentage (10% and 20%) with cement and will be studied for workability, compressive strength, tensile strength and flexure strength. So here in this project, it has been used as replacement of cement by different percentage of wollastonite powder and constant contain of fly ash (10% and 20%) for making self compacting concrete. The percentage replacement of wollastonite powder will be 0%, 5%, 10%, 15%, 20%, and 25% with ordinary Portland cement. Cement has been used in making SCC with super plasticizer as an admixture to get proper workability and for getting strength of concrete. Cubes, beams and cylinders will be casted and tested for slump, compressive strength, splitting tensile strength before that for acceptance criteria of slump flow test, V-funnel, L-box test, U-box test are presented.

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