PSI - Issue 70

Rupankar Chakraborti et al. / Procedia Structural Integrity 70 (2025) 279–286

286

Fig. 5. Compressive strength for specimens on 28 days curing

In the above Fig.3, it is clearly visible that for 7 days curing the compressive strength increases sharply on addition of GGBFS and SF. However, the curve reaches its peak at CM40/BFS30/SF10 and then on addition of further GGBFS and SF its strength slightly started to decrease. In the Fig.4, it is clearly seen that for 14 days curing the strength increases sharply on addition of GGBFS and SF. However, the curve reaches its peak at CM40/BFS30/SF10 and then on addition of further GGBFS and SF its strength slightly decreases. In the Fig.5, for 28 days curing it is clearly visible that the strength increases sharply on addition of GGBFS and SF. However, the curve reaches its peak at CM40/BFS30/SF10 and then on addition of further GGBFS and SF its strength started decreasing. 6. Conclusion • On the note of conclusion, it is experimentally proven that on addition of components like GGBFS and Silica fume can enhance the strength of concrete when it is used as a partial replacement of cement. • In this article, three combinations of GGBFS and SF were examined, which are (20% GGBFS and 5% SF), (30% GGBFS and 10% SF), and (40% GGBFS and 15% SF). • GGBFS can increase the strength upto 30% whereas SF can increase the strength upto10% as a combined effect after which its ability to enhance strength becomes negligible. • Presence of Silica Fume enhances the cement hydration, resulting in the formation of additional C-S-H gel which improve the overall strength and durability of concrete. • Our aim in reducing the use of cement by replacing it with some other compounds which has been successful as we can see the strength enhances greatly as well as the CO 2 production due to the manufacture of cement can be reduced which will help in reducing environmental impacts. • Both constructional and environmental parts are kept in consideration while doing this experiment. There can be some more compounds which can reduce the production of cement by replacing it which can be a great future scope in this section. • The validity has been verified with the results obtained by different researchers on different specimens. Bhanja.S., Sengupta.B., 2003., Modified water-cement ratio law for silica-fume concrete, Cement and Concrete Research, 33, 447-450. Bhanja.S., Sengupta.B., 2005., Investigation on the Tensile Strength of High Performance Concrete incorporating Silica Fume, 18 th International Conference on Structural Mechanics in Reactor Technology, Beijing, China. Gupta. K.K. and Choudhary. K.K.,2022, An investigational study of GGBS and Silica Fume to improve strength properties of M30 Grade of Concrete., International Journal of Recent Development in Engineering and Technology, 11(2). Jayseeliabitha.A., Divyapriya.S., Muthukumar.R., Abarna.P., 2017, Experimental investigation on High Strength Concrete in which Cement is partially replaced with GGBS and Silica Fume, International Journal of Scientific & Engineering Research, 8(10). Japthi.S., JayaramiReddy.B., Manoj Kumar.P.,2023, Influence of GGBFS and Silica Fume on the Properties of High Strength Self-Compacting Concrete, IOP Conf. Series: Earth and Environmental Science, 1280, 012-014. Mal.G., Dr.Mukherjee.B., 2023, A review on partial replacement of cement by Silica Fume and GGBFS, International Research Journal of Modernization in Engineering Technology and Science, 5(12). Venkateswarao.N., Dattatreya Kumar. A., 2016, Influence of Silica Fume and GGBS on strength characteristics of High performance concrete., International Journal of Research in Engineering and Social Sciences, 6(9), 31-37. References Bhanja.S., Sengupta.B., 2002., Investigations on compressive strength of silica fume concrete using statistical methods, Cement and Concrete Research, 33, 447-450.