Use of Coconut Coir Fibre in Limestone Calcined Clay Cement (LC3) Concrete

Concrete is increasingly being used in the industrial sector. Carbon dioxide (CO2) emissions are increasing as a result of the use of concrete. Limestone Calcined Clay Cement (LC3) is one such alternative discovered by researchers to reduce CO2 emissions and safeguard the environment from being polluted. LC3 is ternary blended cement prepared by 50% clinkers, 30% calcined clay, 15% low grade limestone and 5% gypsum. Agricultural waste disposal, such as coconut coir fibres, also pollutes the environment. So, in this study, M25 grade concrete is made by combining LC3 with Coconut coir fibre. Coconut fibre percentages such as 0.3, 0.6, 0.9, 1.2, and 1.5 were utilized to estimate compressive and flexural strength on both LC3 and normal concrete. The result shows that using 1.2% coconut fibre has better strength properties compared to other mixes. The use of coconut fibre decreases the workability of concrete. The microstructure of M25 grade of concrete was observed by Scanning Electron Microscopy (SEM) analysis.