Treatment of Saline Concrete with Palm Ash

Abstract

This paper aims to investigate the effects of using palm leaves ash, when it partially replaces the concrete cement content, to treat the effects of using seawater as a mixing water and curing water on concrete. The paper also explores the suitable replacement percentage of cement with palm ash to give the concrete more strength and suitable workability. A slump test was used to assess the fresh concrete’s workability, as well as concrete strength testing after 7, 28, and 60 days. It was found that 5% of the cement replacement with palm leaves ash in conjunction with the full replacement of the mixing of pure water with seawater achieves an 84.188% increase in the ultimate compressive strength after 28 days of curing in tap water compared with that gained by normal concrete with mixing in seawater. Also, a reasonable workability was obtained. In the case of curing with seawater for 28 days, the partial replacement of 2.5% of cement with palm leaves ash achieves a 70.75% increase in the compressive strength when compared to normal concrete with mixing in seawater.