Effect of Armocel - 200 Admixture on the Compressive Strength and Workability of Normal Concrete

This study centered on the determination of the compressive strengths of concrete when 0%, 0.4%, 0.8%, 1.2% and 1.5% of Armocel 200 admixture was added per 50kg of cementitious material. A total of 75 cubes of 150mm size were cast, 15 each for the different percentages of the admixture. Three cubes each from the different mixes were crushed at 1, 3, 7, 14 and 28 days. The aggregates used were analyzed for specific gravity and particle size distribution. Slump test was carried out on the fresh concretes. Results obtained showed that the addition of Armocel 200 admixture increased the workability of the concrete. Moreover the compressive strength of the concrete increased with the increase in the dosage of the admixture up to 0.4% at all the days of curing. However, at 0.8% dose of the admixture a reduction in strength was observed. A further strength increase was also observed with a further increase in the dosage of the admixture.