International Journal of Civil and Structural Engineering Research ISSN 2348-7607 (Online) Vol. 6, Issue 2, pp: (94-98), Month: October 2018 - March 2019, Available at: www.researchpublish.com
Experimental Study on Partial Replacement of Coarse Aggregate by Palm Kernel Shells in Concrete KIRAN KUMAR M S1, MANOHAR K2, ARJUN B3 1
Assistant Professor Civil Engineering Department, Jain Institute of Technology, Davanagere, Karnataka
2
Assistant Professor, Civil Engineering Department, Sahyadri College of Engineering & Management, Mangaluru, Karnataka 3
Assistant Professor, Civil Engineering Department, Adichunchanagiri Institute of Technology, Chikkamgaluru, Karnataka Visvesvaraya Technological University, Karnataka, INDIA 1
Email: kirankumar9103@gmail.com, 2Email: manukumar.cv@gmail.com, 3Email: arjun.b.ab66@gmail.com
Abstract: The aim of the present research work is to study the possibilities of replacing the part of coarse aggregate by palm kernel shells. Because of storing issues, the waste negatively affects the environment & creating solid waste issues. To solve this problem, an attempt was made to check the effectiveness of palm kernel shells as a partial replacement of coarse aggregate. Coarse aggregate was replaced up to 25% palm kernel shells and cement was replaced 10%(constant) by silica fume and evaluating its fresh and hardened properties. The optimum gained after 7 and 28 days curing period was found to be 5% palm kernel shells +10% silica fume. Keywords: Palm kernel shells, silica fume, compressive strength, split tensile strength.
1. INTRODUCTION Concrete is an artificial engineering material made from a mix of Portland cement, water, fine and coarse aggregates, and a tiny or negligible amount of air which aids the drying technique of the mixture. It is o n e o f t h e the most widely used construction m a t e r i a l accross the world. Concrete is the only major building material that can be delivered to the job site in a plastic state. This one-of a-kind quality makes concrete desirable as a building material because it can be moulded to virtually any form or shape. 1.1 The role of coarse aggregate in concrete Aggregate in concrete is structural filler, but its role is more important than what that simple statement implies. Aggregate occupies most of the volume of the concrete. It is the stuff that the cement paste coats and binds together. The composition, shape, and size of the aggregate all have significant impact on the workability, durability, strength, weight and shrinkage of the concrete. Aggregate can also influence the appearance of the cast surface, which is an especially important consideration in concrete countertop mixes. 1.2 P a lm Kernel Shells Palm Kernel Shell (PKS) is one of the waste material obtained during the crushing of palm nuts in the palm oil mills for palm oil extraction. These are agricultural waste products and are available in large quantities in the tropical regions of the world. Palm kernel shells are mostly used as a source of fuel for domestic cooking in most areas where they occur. Normally, the Palm kernel shell is obtained by breaking the palm nut. Shells are lightweight in nature, but hard and come in different shapes and sizes. Further, the shells are often dumped as waste products of the oil palm industry. In
Page | 94 Research Publish Journals