The use of SCC in the recent times has been increased abundantly in order to reduce the size the members of high raise buildings. In this research work M50 grade concrete was used for testing in which nearly 20% replacement of cement by weight was done using fly ash. Polypropylene fibres are used to enhance the strength and ductility aspects, aspect ratio was considered between 50 and 150. Mix design was done as per the IS codal provisions from which samples were prepared, with different proportions of concrete. Mechanical, durability and physical tests were conducted on the prepared samples. After the tests it was concluded that when 20% replacement of cement by fly ash and 3.5% of addition of fibres increased the compressive strength of concrete up to 68 N/mm2. Tested samples were then compared with the normal concrete the variation in strength aspect is nearly 30%. From SEM and XRD analysis it was found that when we use fly ash inside concrete it increases the durability of concrete, as it starts reacting with the available calcium hydroxide, resulting in the densified porosity of concrete, thus decreasing the thickness in the interfacial transition zone. The presence of more aluminium oxide in both the admixtures helps in maintaining the hardened nature, it also increases the compressive strength in the initial stage itself by reducing the formation of ettringite.