Study of Fire Resistance and Durability Performance of Fibre Reinforced Self Compacting Concrete Using Partial Replacement of Fly Ash and Silica fume

Self-Compacting concrete gets compacted due to its own weight without any external vibration. The trial mix wish satisfies the fresh concrete properties as per EFNARC guidelines and the one which gives maximum compressive strength is used in the work. However, wide spread applications of SCC have been restricted due to lack of standard mix design, procedure and testing methods. Self-compacted concrete used as a special concrete in place of standard concrete due to lack of mix design procedures. The proposed experimental program is aimed to evaluate performance of SCC with varying percentage of polypropylene fibers. An attempt has been made to study the fresh and hardened properties of self-compacting concrete with 10%, 20%, 30% of class F fly ash to the weight of cement and super plasticizer. The self-compacting concrete with 0.05% of polypropylene fiber satisfies EFNARC guidelines and showed better results when compared to other trial mixes. The test results for acceptance characteristics of self-compacting concrete such as slump flow, V-funnel and L-Box are presented. Further, compressive strength at the ages of 3, 7, 28, days were determined and results are included here. The influence of the presence of the PPF in the SCC durability properties of the material has been studied at laboratory using different methods. The durability of concrete is tested by acid resistance, sulphate attack test at the age of 28 days. The response of both types of material with respect to resistance at high temperature was evaluated. The fire study of concrete is tested by the specimens were exposed to high temperatures, up to 300°C and their residual compressive strengths and weights were measured.