INFLUENCE OF AGGREGATE SHAPE ON THE WORKABILITY AND STRENGTH DEVELOPMENT OF CONCRETE
Abstract
ABSTRACT: This study investigates the effect of aggregate shape on the properties of concrete, focusing on key factors such as angular and rounded shaped coarse aggregates. The experiment involved preparing concrete specimens and analyzing the influence of the aggregates varying shapes on the workability and strength development through the slump and compressive strength tests respectively. The slump provided insight to measure the consistency and moisture content of fresh concrete before it is poured, which influences the workability. The compressive strength tests were conducted at 7, 14, and 28 days using a rebound hammer method to assess the load-bearing capacity of the concrete over time. The results indicated that aggregates with angular shapes contributed to higher slump value and compressive strengths due to improved interlocking between particles, leading to better load distribution. In contrast, rounded aggregates exhibited lower workability and compressive strength, likely due to a reduced ability to form stable particle networks. These findings underscore the importance of aggregate shape in optimizing concrete mix designs for enhanced structural performance. The study concludes that aggregate shape significantly influences the mechanical properties of concrete, with angular aggregates offering superior workable concrete and improved strength characteristics. The results have practical implications for construction practices, particularly in the selection of aggregates for concrete applications where improved mechanical credentials is critical
Keywords: Concrete, Workability, Coarse Aggregates and Compressive Strength
---Full Text:
PDFReferences
Aginam, C.H. Chidolue C.A, and Nwakire, C. (2013): “Investigating the Effect of Coarse Aggregate on the Compressive Strength of Concrete,” International Journal of Engineering Research and Application. ISSN: 2248-9622, Volume 3 (4), pp.1140-1144.
Bala, A and Aminullahi, O (2014): “The Effect of Coarse Aggregate Shape on the Properties of Concrete,” Nigeria Journal of Engineering and Applied Science, Volume 1 (4).
BS EN 196: Methods of Testing Cements,’ British Standard Specification, London, 2000
Faliang Gao, Zhi Ge, Huaqiang Yuan, Hanming Zhang and Hongzhi Zhang, (2025): Influence of aggregate characteristics on workability and rheology of self-compacting concrete, Case Studies in Construction Materials: Volume 22, ISSN 2214-5095, https://doi.org/10.1016/j.cscm.2025.e04595.
Golewski, G. L. (2023): Assessing of water absorption on concrete composites containing fly ash up to 30 % in regards to structures completely immersed in water, Case Studies in Construction Materials. Volume 19, e02337, ISSN 2214-5095, https://doi.org/10.1016/j.cscm.2023.e02337
Li, W., Cao, W., Ren, X., Lou, S., Liu, S., & Zhang, J. (2022): Impacts of aggregate gradation on the volumetric parameters and rutting performance of asphalt concrete mixtures. Materials (Basel), 15, Article 4866. https:// doi.org/ 10. 3390/ ma151 44866
Mehta, P. K., & Monteiro, P. J. M, (2006): Comparative Studies of Steel, Bamboo and Rattan as Reinforcing Bars in Concrete: Tensile and Flexural Characteristics, Open Journal of Civil Engineering, Vol.5 No.2.
Meyer, C., & Baxter, S. (2018): Utilizing SCMs to Enhance the Durability of Concrete with Rounded Aggregates. Cement and Concrete Composites, 91, 32-41.
Ogundipe, M.O. Olanike, A.O. Nnochiri, E.S, and Ale, P.O. (2018): Effects of Coarse Aggregate Size on the Compressi
ve Strength of Concrete, Civil Engineering Journal, Volume 4-(4).
Oseke Ifie-Emi Francis (2017): Durability of Concrete Incorporating Ground Granulated Blast-furnace, Nigerian Journal of Scientific Research, (Online) Vol. 16(3):
Popovics, J. S. (2004): Aggregate Shape and Its Impact on Concrete Properties. Journal of ASTM International, 1(1), 100-114
Sahin R, Demirbog? RA, Uysal H, Gul R. (2003): The effect of different cement dosages, slumps and pumice aggregate ratios on the compressive strength and densities of concrete. Cement Concrete Research; 33(8):1245–9.
Singh, & Siddique, (2019): Influence of Aggregate Shape on Workability and Strength of Concrete. Journal of Building Materials, 22(3), 345-354.
Woode, A, Amoah, D.K Aguba, I.A, and Ballow, P. (2015): “The Effect of Maximum Coarse Aggregate Size on the Compressive Strength of Concrete Produced in Ghana,” Civil and environmental Research. ISSN: 2224-5790 (Paper) ISSN: 2225-0514 (Online). Volume 7 (5)
Refbacks
- There are currently no refbacks.
Copyright © 2022-2026. Department of Civil Engineering, Nnamdi Azikiwe University. All Rights Reserved..