Comparative Analysis of the Strength of Concrete made from various Coarse Aggregates
1,* Labiran, J.O. and 2 Adebimpe, T.A.
1,2Department of Civil Engineering, University of Ibadan, Ibadan, Nigeria
DOI: 10.36108/laujoces/6202.61.0160
Abstract
Concrete is a fundamental construction material whose performance is significantly influenced by the properties of its coarse aggregates. This study aimed to evaluate and compare the effect of different coarse aggregates granite, dolomite, marble, limestone, and Recycled Concrete Aggregate (RCA) on the mechanical and fresh properties of concrete. A comprehensive experimental investigation was conducted, including tests for aggregate properties (sieve analysis, specific gravity, water absorption, bulk density, crushing value, moisture content, and impact value) and concrete performance (slump, compacting factor, compressive strength, density, modulus of elasticity and abrasion resistance). Specific gravity ranged from2.39 to 2.77, while water absorption varied from 0.43% to 1.86%, aggregate crushing value ranged from 16.09% to 34.01%, and aggregate impact value ranged from 7.43% to 39.48%. The 28 day compressive strength ranged from 26.8 Mpa to 42.5 Mpa. An internal correlation was done to examine the relationship between aggregate properties and 28 day compressive strength. The study concludes that granite is the most suitable aggregate for high-strength structural concrete, while RCA offers a viable ecofriendly option for medium-strength applications. Proper aggregate selection is crucial for optimizing concrete performance, cost, and sustainability in construction.
Keywords: Coarse aggregates; concrete strength; compressive strength; aggregate properties; concrete performance; correlation