PSI - Issue 70

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ScienceDirect

Procedia Structural Integrity 70 (2025) 517–524

Structural Integrity and Interactions of Materials in Civil Engineering Structures (SIIMCES-2025) PartialReplacementofFineAggregate with Saw Dust in Concrete Rakesh Kumar a, * , Md. Daniyal a , Ritesh Kumar Roushan b

a Department of Civil Engineering, Sandip University Sijoul, Madhubani (Bihar), 847235, India b Department of Civil Engineering, Faculty of Engineering and Technology, SRM University, Sonipat, 131028, Haryana India

Abstract Producing construction materials from sawdust reduces CO2 emissions and conserves resources, which is advantageous for the environment and helps save money. The recycling of sawdust contributes sustainability of ecosystems. This study investigated the mechanical properties of foamed mortar (FM) following the FM mixes were analysed for split tensile strength, compressive strength, flexural strength following the substitution of cement with SDA at levels of 20%, 30%, 40% SDA possesses a lower specific gravity compared to cement, which results in FM mixes containing a higher proportion of cement having reduced density and workability. The air permeability of FM – SDA 20% SDA. As the replacement of Portland cement with SDA 30%, these characteristics diminished. The mechanical strength of FM improved at 20% SDA, but declined at 30% or higher. SEM uncovered additional gaps in FM mixes containing higher levels of SDA. In summary, sawdust mixtures have the potential to generate FM. Minimising the extraction of natural resources lessens the environmental impact of sawdust disposal and the production of building materials. © 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: Sawdust ash; Sustainable Concrete; Compressive Strength;

* Corresponding author. Tel.: Tel.: +91-9507146173 E-mail address: rk220150@gmail.com

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.2025.07.085