PSI - Issue 70

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ScienceDirect

Procedia Structural Integrity 70 (2025) 279–286

Structural Integrity and Interactions of Materials in Civil Engineering Structures (SIIMCES-2025) Mechanical performance of M40 Grade concrete with partial replacement of GGBFS and Silica Fume Rupankar Chakraborti a , Ayushman Majumdar a , SaptarshiDas a , Puja Basu Chaudhuri a, * , Saurav Kar a a Department of Civil Engineering, Heritage Institute of Technology, Kolkata-700107, India Abstract Concrete is an important building material used in the construction of different types of civil engineering structures. The production of cement, an integral part of concrete releases large amounts of carbon dioxide, green house gases that exacerbates climate change. In order to reduce the environmental impact of cement production, supplementary materials can be used. The addition of supplementary cementitious materials to concrete improves the overall properties of concrete through pozzolanic activity. This study is designed to evaluate the feasibility of using Ground granulated blast furnace slagand Silica fume as substitute for cement in concrete. It can be reduced the cost of concrete and the rate of cement consumption. In our research, we investigate the strength properties of concrete using certain percentage of GGBFS and Silica fume with the replacement of cement. The cement was replaced by20%, 30% and 35% GGBFS and 5%, 10% and 15% Silica fume respectively. The w/c ratio, fine aggregates and coarse aggregates were kept as per the design mixes. M40 grade concrete is used in the experiment. The specimens were prepared. The concrete was tested for fresh properties such as workability and mechanical properties like compressive strength for 7 days, 14 days and 28 days respectively. The test results conclude that the combined addition of GGBFS and silica fume as substitute of cement at various amounts gives positive effect on workability and strength.

© 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of International Conference on Structural Integrity Organizers

Keywords: Ground Granulated Blast Furnace Slag; Silica Fume; Compressive Strength

* Corresponding author. Tel.: +91-9674747066. E-mail address: pujabasu.chaudhury@heritageit.edu

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of International Conference on Structural Integrity Organizers 10.1016/j.prostr.2025.07.054