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An experimental study of self-sensing concrete enhanced with multi-wall carbon nanotubes in wedge splitting test and DIC
RISE Research Institutes of Sweden, Built Environment, Infrastructure and concrete technology.ORCID iD: 0000-0003-1358-2364
RISE Research Institutes of Sweden, Built Environment, Infrastructure and concrete technology.ORCID iD: 0000-0001-5760-4874
RISE Research Institutes of Sweden, Built Environment, Infrastructure and concrete technology.ORCID iD: 0000-0003-1904-7426
2020 (English)In: Construction and Building Materials, ISSN 0950-0618, E-ISSN 1879-0526, Vol. 262, article id 120871Article in journal (Refereed) Published
Abstract [en]

Concrete is the worldwide most utilized construction material because of its very good performance, forming ability, long-term durability, and low costs. Concrete is a brittle material prone to cracking. Extensive cracking may impact durability and performance over time considerably. The addition of a small amount of carbon nanotubes (CNT) increases the concrete's overall electrical conductivity, enabling internal structure condition monitoring (self-sensing). This article presents the mechanical and self-sensing properties of regular and high-performance concrete (HPC) with multi-wall carbon nanotubes (MWCNT). The stress detection was investigated in cyclic compression, while damage detection was assessed by means of wedge splitting tests combined with the digital image correlation (DIC) method. The results proved that a small addition of MWCNT (0.05% and 0.10%) enhances the stress detection capabilities and enables the monitoring of microcracking.

Place, publisher, year, edition, pages
Elsevier Ltd , 2020. Vol. 262, article id 120871
Keywords [en]
Digital image correlation (DIC), Fracture, High-performance concrete (HPC), Multi-wall carbon nanotubes (MWCNT), Self-sensing, Wedge splitting, Concrete testing, Condition monitoring, Cracks, Damage detection, Durability, High performance concrete, Nanotubes, Stresses, Cyclic compression, D. digital image correlation (DIC), Electrical conductivity, Internal structure, Long term durability, Multi wall carbon nanotube(MWCNT), Stress detection, Wedge splitting tests, Multiwalled carbon nanotubes (MWCN)
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-51296DOI: 10.1016/j.conbuildmat.2020.120871Scopus ID: 2-s2.0-85091230456OAI: oai:DiVA.org:ri-51296DiVA, id: diva2:1516797
Note

Funding details: Horizon 2020 Framework Programme, H2020, 814632; Funding text 1: The LightCoce project “Building an Ecosystem for the up-scaling of lightweight multi-functional concrete and ceramic materials and structures” has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 814632.

Available from: 2021-01-12 Created: 2021-01-12 Last updated: 2023-05-25Bibliographically approved

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Suchorzewski, JanPrieto Rábade, MiguelMueller, Urs

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