Abstract:
Concrete is the single most widely used building material throughout the world. Concrete is used in large amounts because it is only and extremely good building material. In many places of the world the temperature is rising day by day. These days due to constant sand mining the natural sand is depleting at an alarming rate. In this case fine aggregate is partially replacement of vermiculite. Use of vermiculite in concrete it will enhance the shrinkage and crack resistance, fire resistance and reduces environmental impact and also reduce the cost. In this present study, an attempt has been made to study the mechanical properties of M30 grade concrete with different percentages at a range of 40%, 50% and 60% as partially replacement with vermiculite to the total weight of fine aggregate along with mineral admixtures like Fly ash (FA) is replace with cement by 10% for all mixes.. Water cement ratio is 0.42.Water cement ratio is put constant for all trail mixtures. The main aim of the study is to make economical and eco-friendly concrete. This thesis investigates quantitatively the workability and strength of a concrete mix at 3-days, 7-days, and 28-days, age containing 0% -60% of fine aggregate as vermiculite and 0% - 10% of cementations materials as fly ash. These finding guide the practitioner in selecting fly ash and vermiculite contents to meet strength and workability requirements of a concrete mix.

Keywords: fly ash, vermiculite, aluminum powder