Smart Materials for Construction
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Abstract
Abstract
Structural Health Monitoring (SHM) is widely recognized as an important methodology able to detect damage at an early stage, preventing catastrophic loss. Self-sensing cementitious composites (SSCCs) developed by the incorporation of functionalized multi-walled carbon nanotubes (MWCNTs) into a cement-based matrix have shown significant piezoresistive behavior, making them promising candidates as sensors for SHM applications on Reinforced Concrete structures. However, the effectiveness of MWCNTs in enhancing piezoresistive performance is highly dependent on achieving homogeneous dispersion and establishing a strong interfacial bond with hydration products. The microstructure of cementitious materials has been widely studied in the literature, whereas a limited number of research studies are available that focus on cement-based materials doped with MWCNTs. This study deals with an experimental activity designed to determine the dispersion efficiency of MWCNTs within the cementitious matrix. In particular, the assessment of dispersion efficiency has been carried out by investigating microstructural characteristics and interactions between MWCNTs and hardened cement paste using high-resolution Scanning Electron Microscopy (SEM). A specific methodology has been implemented, achieving promising preliminary results towards a quality control of the composite material. The study underscores the critical role of proper dispersion protocols in tailoring the microstructure and functional performance of MWCNT-doped cementitious composites and assuring optimal quality features to the novel class of sensor devices.
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@article{more2026Microstructural,
title = {Microstructural study on Dispersion of Functionalized Multi–Walled Carbon Nanotubes in Smart Cementitious Composites},
author = {Florence More Dattu shanker more and Paolino Cassese and Monica Maio and Vincenzo De Felice and Giovanni Fabbrocino and Carlo Rainieri},
journal = {e-Journal of Nondestructive Testing},
year = {2026},
doi = {10.58286/33931},
url = {https://doi.org/10.58286/33931}
}FAQ
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