Effect of Various Coarse Aggregates on the Compressive Strength of Concrete in Jalalabad City, Afghanistan
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Abstract
One of the most frequently used building materials on the globe is concrete. Concrete is composed of aggregate, water, and cement. This study investigated the influence of different coarse aggregates on the compressive strength of concrete. The coarse aggregates used in the experimental design consisted of crushed granite, crushed river stone, and natural gravel, with river sand as the fine aggregate. Sieve analysis and unite weight was performed on specimens frequently used by citizens. Fresh Portland cement and water-cement ratios of 0.55 and 0.7 were both used. To investigate the influence of various aggregates on concrete compressive strength a specimen for 20 N/mm2 concrete ratio of 1:1.5:3, and 48 concrete cubes measuring 15 cm x 15 cm x 15 cm were casted in the laboratory at Alfalah University. For fresh concrete, the slump test results were 63 mm for crushed granite, 65 mm for crushed river stone, and 50 mm for natural gravel. Crushing the concrete cubes after 7, 14, 21, and 28 days determined the compressive strength. Additionally, the highest compressive strength values achieved for crushed granite were 25.94 N/mm2, crushed river stone was 23.68 N/mm2, and natural aggregate concrete was 17.73 N/mm2. Based on these findings, crushed granite has been recommended for usage in reinforced concrete applications.
Keywords
Coarse, Aggregate, types, Compressive, Concrete, Natural, Gravel, Crushed, River, Stone, Afghanistan##plugins.themes.academic_pro.article.details##
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