The Impact of Silica Fume on the Properties of High-Strength Concrete: Enhancing Strength, Workability, and Durability

Abstract:

Concrete is a fundamental component of many structures and the backbone of the construction industry. While normal-strength concrete is typically used for smaller projects, high-strength, and even ultra-high-strength concrete are increasingly employed in large-scale construction. This type of concrete provides greater structural strength and reduces costs by minimizing the size of structural members compared to normal-strength concrete. High-strength concrete offers additional benefits such as enhanced durability, reduced permeability, and improved resistance to environmental conditions. High-strength concrete can be produced using various admixtures, including fly ash, silica fume, sugarcane bagasse, and rice husk ash. This study focuses on developing high-strength concrete suitable for high-rise buildings and infrastructure projects. This research used silica fume as a partial replacement for cement in varying proportions (5% to 15% by weight) along with highlighting the optimal percentage of silica fume replacement to achieve best performance. The mix designs utilized Sargodha and Margalla crush aggregates, with water-to-cement ratios ranging from 0.30 to 0.35. Concrete samples were cast and tested to evaluate key properties, including compressive strength, tensile strength, workability and modulus of elasticity. The study shows that incorporation of silica fume in high-strength concrete significantly enhances its mechanical properties, including workability, compressive strength, and tensile strength. The results showed marginal improvements in the modulus of elasticity as the silica fume content increased. By using high-strength concrete, designers can reduce material usage due to smaller member sizes, making it particularly valuable for high-rise buildings, long-span bridges, and offshore structures. The research concludes with recommendations for future work and further applications.

• Periodical: Construction Technologies and Architecture (Volume 17)
• Pages: 61-70
• DOI: https://doi.org/10.4028/p-C0Xt2l
• Online since: April 2025
• Authors: Zeeshan Ullah*, Muhammad Khurram Rashid, Saima Shafi Ur Rehman, Maryam Sadia
• Keywords: Cost Comparison, High Strength Concrete, Property of Concrete, Silica Fumes, Structure Design

References

[1] Roy, R. and V. Sairam, Effect of Silica Fume and Foundry waste sand on strength characteristics of Geogrid and Ferro cement panel. Materials Today: Proceedings, 2019. 7: pp.362-372.

DOI: 10.1016/j.matpr.2018.11.097

[2] Ye, L., et al., Coupling simulation of delayed coking and hydrotreating process at molecular level. Chemical Engineering Journal, 2022. 449: p.137543.

DOI: 10.1016/j.cej.2022.137543

[3] Sagadevan, R. and B.N. Rao, Experimental and analytical investigation of punching shear capacity of biaxial voided slabs. Structures, 2019. 20: pp.340-352.

DOI: 10.1016/j.istruc.2019.03.013

[4] Islam, S. and G. Bhat, Environmentally-friendly thermal and acoustic insulation materials from recycled textiles. Journal of Environmental Management, 2019. 251: p.109536.

DOI: 10.1016/j.jenvman.2019.109536

[5] Zhao, Z., et al., Applications of asphalt concrete overlay on Portland cement concrete pavement. Construction and Building Materials, 2020. 264: p.120045.

DOI: 10.1016/j.conbuildmat.2020.120045

[6] Gao, D., et al., Behavior analysis and strength prediction of steel fiber reinforced recycled aggregate concrete column under axial compression. Construction and Building Materials, 2021. 290: p.123278.

DOI: 10.1016/j.conbuildmat.2021.123278

[7] Alsuliman, J.A., Causes of delay in Saudi public construction projects. Alexandria Engineering Journal, 2019. 58(2): pp.801-808.

DOI: 10.1016/j.aej.2019.07.002

[8] Oukaili, N.K. and H.D. Merie, CFRP strengthening efficiency on enhancement punching shear resistance of RC bubbled slabs with openings. Case Studies in Construction Materials, 2021. 15: p. e00641.

DOI: 10.1016/j.cscm.2021.e00641

[9] Pöhler, C., et al., Chapter 8 - Composites for structural strengthening, repair, rehabilitation, and retrofit, in Composite Materials, I.-M. Low and Y. Dong, Editors. 2021, Elsevier. pp.205-226.

DOI: 10.1016/b978-0-12-820512-9.00005-8

[10] Yoo, D.Y., Y.S. Yoon, and N. Banthia, Predicting the post-cracking behavior of normal- and high-strength steel-fiber-reinforced concrete beams. Construction and Building Materials, 2015. 93: pp.477-485.

DOI: 10.1016/j.conbuildmat.2015.06.006

[11] Rida, L. and A.H. Alaoui, Effect of high volume fly ash and curing temperature on delayed ettringite formation. Materials Today: Proceedings, 2022. 58: pp.1285-1293.

DOI: 10.1016/j.matpr.2022.02.110

[12] Nazari, Z., A. Tabarsa, and N. Latifi, Effect of compaction delay on the strength and consolidation properties of cement-stabilized subgrade soil. Transportation Geotechnics, 2021. 27: p.100495.

DOI: 10.1016/j.trgeo.2020.100495

[13] Ahmed, F.R., M.A. Muhammad, and R.K. Ibrahim, Effect of alum sludge on concrete strength and two way shear capacity of flat slabs. Structures, 2022. 40: pp.991-1001.

DOI: 10.1016/j.istruc.2022.04.086

[14] Danish, A., et al., Effect of cenospheres on the engineering properties of lightweight cementitious composites: A comprehensive review. Journal of Building Engineering, 2022. 49: p.104016.

DOI: 10.1016/j.jobe.2022.104016

[15] Sahoo, S. and B. Singh, Punching shear capacity of recycled-aggregate concrete slab-column connections. Journal of Building Engineering, 2021. 41: p.102430.

DOI: 10.1016/j.jobe.2021.102430

[16] Ramos, M. and G. Martinho, Relation between construction company size and the use of recycled materials. Journal of Building Engineering, 2022. 45: p.103523.

DOI: 10.1016/j.jobe.2021.103523

[17] Wu, Z., et al., 13 - Mineral fibres: basalt, in Handbook of Natural Fibres (Second Edition), R.M. Kozłowski and M. Mackiewicz-Talarczyk, Editors. 2020, Woodhead Publishing. pp.433-502.

DOI: 10.1016/b978-0-12-818398-4.00001-3