Cargando…

Self-Compacted Concrete with Self-Protection and Self-Sensing Functionality for Energy Infrastructures

This paper aims to demonstrate the self-protection and self-sensing functionalities of self-compacted concrete (SCC) containing carbon nanotubes (CNT) and carbon microfibers (CMF) in a hybrid system. The ability for self-sensing at room temperature and that of self-protection after thermal fatigue c...

Descripción completa

Detalles Bibliográficos
Autores principales: Maria Cruz, Alonso, Javier, Puentes
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7084940/
https://www.ncbi.nlm.nih.gov/pubmed/32131383
http://dx.doi.org/10.3390/ma13051106
_version_ 1783508838729646080
author Maria Cruz, Alonso
Javier, Puentes
author_facet Maria Cruz, Alonso
Javier, Puentes
author_sort Maria Cruz, Alonso
collection PubMed
description This paper aims to demonstrate the self-protection and self-sensing functionalities of self-compacted concrete (SCC) containing carbon nanotubes (CNT) and carbon microfibers (CMF) in a hybrid system. The ability for self-sensing at room temperature and that of self-protection after thermal fatigue cycles is evaluated. A binder containing a high volume of supplementary mineral additions (30%BFSand20%FA) and different type of aggregates (basalt, limestone, and clinker) are used. The self-diagnosis is assessed measuring electrical resistivity (ER) and piezoresistivity (PZR) in compression mode within the elastic region of the concrete. Thermal fatigue is evaluated with mechanical and crack measurements after heat cycles (290–550 °C). SCC withstands high temperature cycles. The protective effect of the hybrid additive (CNT+CMF) notably diminishes damage by keepinghigher residual strength and lessmicrocracking of the concrete. Significant reductions in ER are detected. The self-diagnosis ability of functionalized SCC isconfirmed with PZR. A content of the hybrid functional additive (CNT+CMF) in the percolation region is recommended to maximize the self-sensing sensitivity. Other parameters as sample geometry, sensor location, power supply, and load level have less influence.
format Online
Article
Text
id pubmed-7084940
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-70849402020-03-23 Self-Compacted Concrete with Self-Protection and Self-Sensing Functionality for Energy Infrastructures Maria Cruz, Alonso Javier, Puentes Materials (Basel) Article This paper aims to demonstrate the self-protection and self-sensing functionalities of self-compacted concrete (SCC) containing carbon nanotubes (CNT) and carbon microfibers (CMF) in a hybrid system. The ability for self-sensing at room temperature and that of self-protection after thermal fatigue cycles is evaluated. A binder containing a high volume of supplementary mineral additions (30%BFSand20%FA) and different type of aggregates (basalt, limestone, and clinker) are used. The self-diagnosis is assessed measuring electrical resistivity (ER) and piezoresistivity (PZR) in compression mode within the elastic region of the concrete. Thermal fatigue is evaluated with mechanical and crack measurements after heat cycles (290–550 °C). SCC withstands high temperature cycles. The protective effect of the hybrid additive (CNT+CMF) notably diminishes damage by keepinghigher residual strength and lessmicrocracking of the concrete. Significant reductions in ER are detected. The self-diagnosis ability of functionalized SCC isconfirmed with PZR. A content of the hybrid functional additive (CNT+CMF) in the percolation region is recommended to maximize the self-sensing sensitivity. Other parameters as sample geometry, sensor location, power supply, and load level have less influence. MDPI 2020-03-02 /pmc/articles/PMC7084940/ /pubmed/32131383 http://dx.doi.org/10.3390/ma13051106 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Maria Cruz, Alonso
Javier, Puentes
Self-Compacted Concrete with Self-Protection and Self-Sensing Functionality for Energy Infrastructures
title Self-Compacted Concrete with Self-Protection and Self-Sensing Functionality for Energy Infrastructures
title_full Self-Compacted Concrete with Self-Protection and Self-Sensing Functionality for Energy Infrastructures
title_fullStr Self-Compacted Concrete with Self-Protection and Self-Sensing Functionality for Energy Infrastructures
title_full_unstemmed Self-Compacted Concrete with Self-Protection and Self-Sensing Functionality for Energy Infrastructures
title_short Self-Compacted Concrete with Self-Protection and Self-Sensing Functionality for Energy Infrastructures
title_sort self-compacted concrete with self-protection and self-sensing functionality for energy infrastructures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7084940/
https://www.ncbi.nlm.nih.gov/pubmed/32131383
http://dx.doi.org/10.3390/ma13051106
work_keys_str_mv AT mariacruzalonso selfcompactedconcretewithselfprotectionandselfsensingfunctionalityforenergyinfrastructures
AT javierpuentes selfcompactedconcretewithselfprotectionandselfsensingfunctionalityforenergyinfrastructures