Influence of Pre-Saturation of Gravel on the Mechanical Properties of Concrete

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By:Habeeb Solihu

DOI: https://doi.org/10.30564/jbms.v4i1.4780

Abstract: In this study, the laboratory tests on the influence of pre-saturation of gravel on the mechanical properties of concrete were carried out. The study accessed the specific gravity, water absorption capacity, the impact and the crushing values of the coarse aggregates. Also, this study determined and compared the compressive strengths of concrete produced with the presaturated gravel and the dry natural gravel. The results of the compressive strength comparisons have revealed that about 10.8%, 5.6%, 9.4%, and 28.4% reductions in compressive strengths when the samples prepared with pre-saturated and natural aggregates were crushed at 7 days, 14 days, 21 days, and 28 days curing periods respectively. Thus, pre-saturation of aggregate has a negative impact on the strength of the concrete. This study recommends that the pre-saturated aggregate be avoided/treated as much as possible in concrete production because it has a negative impact on the compressive strength of the concrete. That is, it reduces the compressive strength at different curing periods. References:

[1] Chenglong, Z., Yu, C., 2019. The effect of nano-SiO2 on concrete properties: a review. Nanotechnology Reviews. 8, 562-572. [2] Venkat Rao, N., Rajasekhar, M., Vijayalakshmi, K.,et al., 2015. The future of civil engineering with the influence and impact of nanotechnology on properties of materials. 2nd International Conference on Nanomaterials and Technologies (CNT 2014). [3] Hansen, T.C., 1992. Recycled aggregates and recycled aggregate concrete, recycling of demolished concrete and masonry. International Union of Laboratories and Experts in Construction Materials, Systems and Structures. pp. 6. [4] Oliveira, M.B.D., Vazquez, E., 1996. The influence of retained moisture in aggregates from recycling on the properties of new hardened concrete. Waste Management. 16(1-3), 113-117. [5] Poon, C.S., Shui, Z.H., Lam, L., et al., 2004. Influence of moisture states of natural and recycled aggregates on the slump and compressive strength of concrete. Cement and Concrete Research. 34(1), 31-36. [6] Czarnecki, L., 2013. Sustainable Concrete; Is Nanotechnology the future of concrete polymer composites? Advanced Materials Research. 687, 3-11. [7] Feng, Y., Su, Y., Lu, N., et al., 2019. Meta Concrete: Exploring Novel Functionality of Concrete Using Nanotechnology. Engineered Science. 8, 1-10. [8] Asokan, P., Mohini, S., Shyam, A.R., 2007. Solid wastes generation in India and their recycling potential in building materials. Building and Environment. 42, 2311-2320. [9] Letelier, V., Ortega, J.M., Tarela, E., et al., 2018. Mechanical performance of eco-friendly concretes with volcanic powder and recycled concrete aggregates. Sustainability. 10, 30-36. [10] Uzzal, H.Md., Rongjin, C., Thomas Ng, S., et al., 2020. Sustainable natural pozzolana concrete - A comparative study on its environmental performance against concretes with other industrial by-products. Construction and Building Materials. pp. 1-10. [11] Lius, F., de Brito, J., Barra, M., 2011. Influence of the pre-saturation of recycled coarse concrete aggregates on concrete properties. Magazine of Concrete Research. 63(B), 617-627. [12] Pierre-Claude, A., 2000. Cements of yesterday and today: Concrete of tomorrow. Cement and Concrete Research. 30(9), 1349-1359. [13] Cartuxo, F., de Brito, J., Evangelista, L., et al., 2015. Rheological behaviour of concrete made with fine recycled concrete aggregates - Influence of the superplasticizer. Construction and Building Materials. 89, 38-47. [14] Chau-Khun, M., Abdullah, Z.A., Wahid, O., 2018. Structural and material performance of geopolymer concrete: A review. Construction and Building Materials. 186, 90-102. [15] Rodrı ´guez-Robles, D., Garcı ´a-Gonza´lez, J., JuanValde´s, A., et al., 2015. Effect of mixed recycled aggregates on mechanical properties of recycled concrete. Magazine of Concrete Research. 67(5), 247- 256. [16] Tam, V.W.Y., Gao, X.F., Tam, C.M., 2005. Microstructural analysis of recycled aggregate concrete produced from two-stage mixing approach. Cement and Concrete Research. 35(6), 1195-1203. [17] Etxeberria, M., Va´zquez, E., Marı, A., et al., 2007. Influence of the amount of recycled coarse aggregates and production process on properties of recycled aggregate concrete. Cement and Concrete Research. 37(5), 735-742. [18] Lima, J., 1999. Proposition of guidelines for production and standardization of construction and demolition waste and of its application in mortars and concrete (in portuguese) Masters dissertation in Architecture and Urbanism. School of Engineering of Sao Carlos of the University of Sao Paulo, Sao Carlos.