Fiber Reinforced Mortar For Repair And Rehabilitation Of Structures

Abstract

The effective utilization of artificial fibres in construction work will enhance the performance and durability of the concrete. The use of fibres as reinforcement in traditional concrete mixes has been extensively studied and has been slowly finding its place in practice. The use of fibres in masonry applications, repair and rehabilitation of structures, nowadays plays a beneficial role in improving the strength of mortar and makes it more suitable for use in structures subjected to impacts and earthquake loads. The Fibre Reinforced Mortar (FRM) will also increase the flexural Strength of Cement Mortar. This paper will summarize the findings for improving the strength of 43 grade mortar which may be very much applied as material in Repair and Rehabilitation of Civil Engineering Structures. In this research, the combination of cement mortar with addition of different fibres such as Basalt, Steel and Nylon are effectively mixed in proper ratios. Cubes are casted in standard sizes (75mmX 75mm X 75mm) and tested for the compressive strength after 7, 14 and 28 days to obtain the optimum values of compressive strength for FRM. For this matrix, the cement is replaced by 0.5%, 1%, 1.5% and 2% of fibres with cement sand ratio of 1:3. From the results the compressive strength for FRM was comparatively higher than traditional mortar cubes. The flexural strength was also drastically increased.