Effect on Strength of Concrete Incorporating Cotton Fiber and Silica Fume

Aim of this study to determine Compressive strength and Flexural strength of M20 grade concrete with use of cotton fiber and silica fume. Conflow-SP is used to improve the workability of concrete which is based on Sulphonated naphthalene polymers. Efforts for improving the performance of concrete over the past few years suggest that cement replacement materials along with mineral & chemical admixtures can improve the strength characteristics of concrete. Silica fume can be utilized to produce high strength and durable concrete composites. The Concrete specimens were cured on normal moist curing under normal atmospheric temperature. The Compressive strength determined at 7 and 28 days and Flexural strength at 28 days. The addition of Cotton fiber by the weight of concrete shows an increase strength property and Silica fume as cement replacement material shows early long term strength. This system that is Ordinary Portland Cement - Cotton fiber - Silica fume concrete was found to increase the Compressive and Flexural strength of concrete on all ages when compared to concrete made with Cotton fiber and Silica fume.