Detail publikace
Self-Sensing Properties of Fly Ash Geopolymer Doped with Carbon Black under Compression
MIZEROVÁ, C. KUSÁK, I. TOPOLÁŘ, L. SCHMID, P. ROVNANÍK, P.
Originální název
Self-Sensing Properties of Fly Ash Geopolymer Doped with Carbon Black under Compression
Anglický název
Self-Sensing Properties of Fly Ash Geopolymer Doped with Carbon Black under Compression
Jazyk
en
Originální abstrakt
The development of smart materials is a basic prerequisite for the development of new tech-nologies enabling the continuous non-destructive diagnostic analysis of building structures. Within this framework, the piezoresistive behavior of fly ash geopolymer with added carbon black under compression was studied. Prepared cubic specimens were doped with 0.5, 1, and 2% carbon black and embedded with four copper electrodes. In order to obtain a complex character-ization during compressive loading, the electrical resistivity, longitudinal strain and acoustic emission were recorded. The samples were tested in two modes: repeated loading under low compressive forces and continuous loading until failure. The results revealed piezoresistivity for all tested mixtures, but the best self-sensing properties were achieved with 0.5% of carbon black admixture. The complex analysis also showed that fly ash geopolymer undergoes permanent deformations and the addition of carbon black changes its character from quasi-brittle to rather ductile. The combination of electrical and acoustic methods enables the monitoring of materials far beyond the working range of a strain gauge.
Anglický abstrakt
The development of smart materials is a basic prerequisite for the development of new tech-nologies enabling the continuous non-destructive diagnostic analysis of building structures. Within this framework, the piezoresistive behavior of fly ash geopolymer with added carbon black under compression was studied. Prepared cubic specimens were doped with 0.5, 1, and 2% carbon black and embedded with four copper electrodes. In order to obtain a complex character-ization during compressive loading, the electrical resistivity, longitudinal strain and acoustic emission were recorded. The samples were tested in two modes: repeated loading under low compressive forces and continuous loading until failure. The results revealed piezoresistivity for all tested mixtures, but the best self-sensing properties were achieved with 0.5% of carbon black admixture. The complex analysis also showed that fly ash geopolymer undergoes permanent deformations and the addition of carbon black changes its character from quasi-brittle to rather ductile. The combination of electrical and acoustic methods enables the monitoring of materials far beyond the working range of a strain gauge.
Plný text v Digitální knihovně
Dokumenty
BibTex
@article{BUT172177,
author="Cecílie {Mizerová} and Ivo {Kusák} and Libor {Topolář} and Pavel {Schmid} and Pavel {Rovnaník}",
title="Self-Sensing Properties of Fly Ash Geopolymer Doped with Carbon Black under Compression",
annote="The development of smart materials is a basic prerequisite for the development of new tech-nologies enabling the continuous non-destructive diagnostic analysis of building structures. Within this framework, the piezoresistive behavior of fly ash geopolymer with added carbon black under compression was studied. Prepared cubic specimens were doped with 0.5, 1, and 2% carbon black and embedded with four copper electrodes. In order to obtain a complex character-ization during compressive loading, the electrical resistivity, longitudinal strain and acoustic emission were recorded. The samples were tested in two modes: repeated loading under low compressive forces and continuous loading until failure. The results revealed piezoresistivity for all tested mixtures, but the best self-sensing properties were achieved with 0.5% of carbon black admixture. The complex analysis also showed that fly ash geopolymer undergoes permanent deformations and the addition of carbon black changes its character from quasi-brittle to rather ductile. The combination of electrical and acoustic methods enables the monitoring of materials far beyond the working range of a strain gauge.",
address="MDPI",
chapter="172177",
doi="10.3390/ma14164350",
howpublished="online",
institution="MDPI",
number="16",
volume="14",
year="2021",
month="august",
pages="1--11",
publisher="MDPI",
type="journal article in Web of Science"
}