Abstract
This study was conducted to investigate the compressive strength and workability of concrete added with coconut shells. Comparisons were made between conventional concrete with concrete mix coconut shell. In this study, the concretes were mixes with coconut shell by percentage of weight concrete which is 0%, 5%, and 10%. The coconut shell has been crushed first, then it was sieved, to get the optimum size which, that retained on the 5mm sieve and passing 10mm sieve. Experimental tests conducted in this study are slump test and compressive test. The results from this study are workability of concrete added with 0% and 5% of coconut shell has medium degree of workability compared to concrete added with 10% that has low workability. For the compressive strength, the concrete added with 5% and 10% of coconut shell has lower strength compared with normal concrete.
Highlights
Concrete is a material produced from several materials such as cement, coarse and fine aggregates, and water mixture [1][2]
The agricultural waste is the best way to reduce the raw materials used in construction industry and helping to reduce pollution caused by disposal of agricultural waste [6][7]
Coconut shell is often used as a composite in concrete because of the characteristics found in it better than material that commonly used in production of concrete
Summary
Concrete is a material produced from several materials such as cement, coarse and fine aggregates, and water mixture [1][2]. Coconut shell may offer itself as a potential construction material in the field of construction industries and would solve the environmental problem of reducing the generation of solid wastes simultaneously. Coconut shell is often used as a composite in concrete because of the characteristics found in it better than material that commonly used in production of concrete. Coconut shell has high strength and modulus properties along with the added advantage of high lignin content. The surface texture of the coconut shell was fairly smooth on concave and rough on concave faces. Coconut shells are used in the production of activated carbon due to hardness and high carbon content [14]. Coconut shells are fairly enough to get workability same or better than normal material used in concrete. The properties of coconut shells were compared with crushed granite and oil palm shell (Table 1)
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