Concrete of Treated and Untreated Date Palm Tree Wastes

Abstract

This paper studies the replacement of the cement content in concrete by treated and untreated date palm tree wastes. Although, palm tree wastes have been used in many industries, many components of the wastes that cannot be used in industry and there is a need to get rid of these components. On the other side, reducing cement content in concrete is a global trend to reduce the pollution resulting from the cement manufacturing process. Ash of palm tree leaves, date palm tree fibers, and a combination of them have been used to replace certain percentages of concrete cement content. Both strength and workability have been studied to investigate the feasibility of replacing cement by treated and untreated palm tree wastes. Treated palm tree waste has affected both slump and strength, where 5% replacement of cement by palm leaf ash has increased the strength by 25% after 28 days of curing. The slump of the concrete has been  reduced to 6 cm at 5% cement replacement of the ash of palm leaves. The untreated palm tree wastes have an opposite effect on concrete performance, but replacing cement by the combination of treated and untreated palm tree wastes has given a good result at the early age of concrete. Replacing 5% cement by a combined 2.5% palm fiber and 2.5% palm leaf ash has increased the concrete compressive strength by 14% after 7 days of curing.
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