Examining Concrete Properties using Coconut Fiber Ash and Fly Ash as Partial Replacement for Cement

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2017 by IJETT Journal
Volume-46 Number-5
Year of Publication : 2017
Authors : Peresia Blapoh Wungko, K.Bindumathi
DOI :  10.14445/22315381/IJETT-V46P241


Peresia Blapoh Wungko, K.Bindumathi "Examining Concrete Properties using Coconut Fiber Ash and Fly Ash as Partial Replacement for Cement", International Journal of Engineering Trends and Technology (IJETT), V46(5),238-243 April 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Concrete is a composition of cement, coarse aggregate, fine aggregate and water which makes it a composite material. Fly ash which is a waste material is used as a supplementary cementitious material in the production of Portland cement and when added to concrete, it gives good workability, greater strength, decreases permeability and increases durability. Coconut fiber is an agricultural waste which can be burned into ash and when added to concrete as a partial replacement of cement, it has great potentials. The aim of this project work is to investigate concrete properties using coconut fiber ash and fly ash as partial replacement for cement in regards to the compressive strength which is investigated for 3,7, 28,56 and 90 days. Since concrete is weak in tension due to its brittle nature, it is necessary to conduct the split tensile strength test. Durability test which is an important factor to prove a concrete ability to resist weather action, chemical attack, and abrasion while maintaining its desired engineering properties is also investigated in this project work. In this project work, mix proportion of M40 grade of concrete was used for 8 mixes in accordance with IS 456: 2000 and IS 10262: 2009. These mixes were an inclusion of separate mixes of conventional concrete as well as different percentages of coconut fiber ash and fly ash as a partial replacement for cement of which the various results obtained for the partial mixes strength will be compared to the strength of the conventional concrete. The addition of coconut fiber ash ranges from 20% to 40 % and fly ash ranges from 10% to 25%. Nowadays, regular materials used for construction are very expensive and unaffordable by many lower income people, thereby unaware of the usages of some waste materials which can be partially replaced as construction material and at the same time reducing cost. Sensitization is to be created in the usage of those waste materials such as coconut fiber ash as a construction material which is also an objective of this project work.


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concrete, coconut fiber ash, workability, durability, fly ash, compressive strength, split tensile strength.