PSI - Issue 70

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ScienceDirect

Procedia Structural Integrity 70 (2025) 295–302

Structural Integrity and Interactions of Materials in Civil Engineering Structures (SIIMCES-2025) Performance of Sustainable Self-Compacting Concrete with Industry and Agricultural By-Products K. Navin Balaji a, *, D. Sivakumar a a Department of Civil Engineering, K.S.Rangasamy College of Technology,, Tiruchengode -637 215, Tamilnadu, India. Abstract Self-Compacting Concrete (SCC) represents a highly workable concrete which distributes itself effortlessly while maintaining uniform distribution so that it achieves complete compaction without using vibration methods. The study investigates sustainable SCC production through experimental methods which incorporate rice husk ash (RHA) and coconut shell aggregate (CSA) and limestone powder (LSP) as cement and natural coarse aggregate (NCA) replacements. The experimental research incorporated 15% limestone powder substitution in all mixes while RHA content varied from 0 to 25% to enhance pozzolanic activity. Furthermore, 20% of NCA was uniformly substituted with CSA to enhance sustainability and produce the light weight SCC. The fresh properties, including flowability, passing ability, and viscosity, were assessed in accordance with EFNARC standards. The research furthermore investigated mechanical parameters like as strength, deformation behaviour, and internal structural integrity throughout various curing periods. The combination of RHA and LSP with CSA produced SCC that exhibited enhanced mechanical properties and micro-filling characteristics and lightweight and environmentally friendly concrete behaviour. The optimum substitute of RHA was determined to be 15%, with the mix ID RHA15 exhibiting superior mechanical properties compared to other SCC and conventional mixes. The research indicates that SCC incorporating RHA, LSP, and CSA exhibits potential as a viable approach for developing sustainable concrete structures with cost-effectiveness.

© 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: Rice Husk Ash (RHA); Limestone Powder (LSP); Coconut shell aggregate (CSA); EFNARC; Self-Compacting Concrete (SCC)

* Corresponding author. Tel.: +91-8526843413 E-mail address: navinnavi2050@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.2025.07.056