Biochar as a Conducting Filler to Enhance Electrical Conduction Monitoring for Concrete Structures

Siti Kamaluddin; Denni Kurniawan; Muhammad Saifullah Abu Bakar; Zuruzi Abu Samah

doi:10.4028/www.scientific.net/KEM.847.149

Paper Titles

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A Study on Phonon-Mediated Thermal Transport and Lattice Thermal Conductivity Prediction Using First-Principles Calculations
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A Novel Full Stressed Energy Harvester with Varied Thickness
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Development of Rice Straw Paper Coated with Pomelo Peel Extract for Bio-Based and Antibacterial Packaging
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Biochar as a Conducting Filler to Enhance Electrical Conduction Monitoring for Concrete Structures
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 847Biochar as a Conducting Filler to Enhance...

Biochar as a Conducting Filler to Enhance Electrical Conduction Monitoring for Concrete Structures

Abstract:

Smart and resilient concrete structures will require building materials such as cements that sense flaws. One mechanism of crack detection in structures is monitoring their electrical conduction. Two mechanisms of charge in cement is ionic movement and moisture diffusion. Carbon rich electrically-conducting char is produced by pyrolyzing rice husks and can be used to enhance electrical conduction in cement. This paper studies the evolution of electrical properties in ordinary Portland cement added with up to 15 wt% rice husk-derived biochar. Resistance of cements decreased with increasing biochar addition while moisture loss and resistance both increase as curing time increases. Cement with 15 wt% biochar experiences the largest moisture loss and the most conducting. This suggest charge transport along percolation paths of biochar particles is dominant mechanism in these materials. Electron microscopy and energy dispersive spectroscopic studies reveal formation of Ettringite phase and good wetting/bonding at the interface of biochar particles and cement.

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Periodical:

Key Engineering Materials (Volume 847)

Pages:

149-154

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.847.149

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Online since:

June 2020

Authors:

Siti Kamaluddin*, Denni Kurniawan, Muhammad Saifullah Abu Bakar, Zuruzi Abu Samah

Keywords:

Biochar, Green Buildings, Self-Healing, Smart Concrete

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