PSI - Issue 78

Available online at www.sciencedirect.com

ScienceDirect

Procedia Structural Integrity 78 (2026) 607–614

© 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 responsibility of XX ANIDIS Conference organizers Keywords: smart cement-based composites; self-sensing; functionalized carbon nanotubes; structural health monitoring. Abstract Self-sensing performance of materials represents a key issue for the development of biomimetic civil structural health monitoring systems towards smart and resilient infrastructures. During the last decades, research interest in smart cement-based composites obtained by adding conductive nanofillers to cementitious matrices has been strongly increasing, although several issues remain open. This experimental study focuses on the electromechanical properties of self-sensing cement-based composites obtained by using functionalized carbon nanotubes as fillers. Quasi-static cyclic tests were carried out on specimens subjected to pure compression. The influence of water-to-cement ratio was assessed. 1. Introduction Civil Structural Health Monitoring (SHM) is widely established as crucial to prolonging structural service life through timely maintenance, ensuring safety, and preventing failure due to natural hazards, such as earthquakes (Frangopol and Liu, 2019). Several SHM strategies can be employed depending on the application scenario; however, SHM systems are generally based on data measured by a limited number of sensors, which are commonly externally installed on the host structure (Lynch and Loh, 2006). Although a large variety of off-the-shelf sensors is XX ANIDIS Conference Experimental study on the strain sensing behavior of smart cement based composites under cyclic load Paolino Cassese a, *, Luigi Cieri a , Carlo Luca Schiavi b , Antonio Bonati b , Carlo Rainieri a a National Research Council of Italy, Construction Technologies Institute (CNR-ITC), Secondary office, Naples 80146, Italy b National Research Council of Italy, Construction Technologies Institute (CNR-ITC), Head office, San Giuliano Milanese 20098, Italy

* Corresponding author. Tel.: +39-081-2530020. E-mail address: cassese@itc.cnr.it

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 responsibility of XX ANIDIS Conference organizers 10.1016/j.prostr.2025.12.078