State of the Art on Sensing Capability of Poorly or Nonconductive Matrixes with a Special Focus on Portland Cement–Based Materials

Document identifier: oai:DiVA.org:ltu-75725
Access full text here:10.1061/(ASCE)MT.1943-5533.0002901
Keyword: Engineering and Technology, Materials Engineering, Other Materials Engineering, Teknik och teknologier, Materialteknik, Annan materialteknik, Byggmaterial, Building Materials
Publication year: 2019
Relevant Sustainable Development Goals (SDGs):
SDG 11 Sustainable cities and communities
The SDG label(s) above have been assigned by OSDG.ai

Abstract:

Concrete is a well-established and the most used but also well-characterized building material in the world. However, many old and new-build structures suffer from premature failures due to extensive deterioration and decreased load-bearing capacity. Consequently, structural monitoring systems are essential to ensure safe usage of concrete structures within and beyond the designed life. Traditional monitoring systems are based on metallic sensors installed in crucial locations throughout the structure. Unfortunately, most of them have a relatively low reliability and very short life span when exposed to often very harsh environments. The ideal solution is therefore to develop a smart concrete having itself self-sensing capability. A number of studies show that conductive cementitious matrixes will undergo changes in their electrical resistivity with variations of stresses, strains or, developing microcracking. This can be used as a reliable tool to measure changes. This review provides a comprehensive overview of several non-conductive matrixes, with special focus on Portland cement based materials showing self-sensing capabilities by description of detection mechanisms, sensing capabilities, limitations and potential applications.  

Authors

Thanyarat Buasiri

Luleå tekniska universitet; Byggkonstruktion och brand
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Karin Habermehl-Cwirzen

Luleå tekniska universitet; Byggkonstruktion och brand
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Andrzej Cwirzen

Luleå tekniska universitet; Byggkonstruktion och brand
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