Multifunctional components from carbon concrete composite C3 – integrated, textile-based sensor solutions for in situ structural monitoring of adaptive building envelopes. Issue 23 (December 2018)

• Record Type: Journal Article
• Authors: Haentzsche, Eric; Frauendorf, Moritz; Nocke, Andreas; Cherif, Chokri; Reichardt, Michaela; Butler, Marko; Mechtcherine, Viktor
• Is Part Of: Textile research journal. Volume 88:Issue 23(2018)
• Page Start: 2699
• Page End: 2711
• Publication Date: 2018-12
• Subjects: c3 carbon concrete composite -- carbon fiber -- resistive fiber strain sensor -- in situ sensor systems -- load monitoring; Textile industry -- Periodicals; Textile fabrics -- Periodicals; Textile research -- Periodicals; Textiles et tissus -- Industrie et commerce -- Périodiques; Textiles et tissus -- Périodiques; Textiles et tissus -- Recherche -- Périodiques; Electronic journals; 677.005
• DOI: 10.1177/0040517517729385
• Languages: English
• ISSNs: 0040-5175

Abstract

This contribution will introduce carbon-reinforced concrete components (so-called carbon concrete composites, or C 3 ) with sensor functionalities for innovative building envelopes. For a continuous in situ structural monitoring, these textile-reinforced concrete components are equipped with textile sensor networks consisting of resistive carbon fiber sensors (CFSs), which are integrated into the carbon fiber non-crimp fabrics of the concrete reinforcement by multiaxial warp-knitting. The in situ CFSs, consisting of 1 k or 50 k carbon fiber roving with added staple fiber/multifilament dielectric cladding, are later integral to the load-distributing elements of the concrete component, and elongations within these are easy to record with good correlation to ohmic resistance changes. Gage factors of k = 0.52–1.23 at linearity deviations of ALin = 4.0–8.7% are feasible. This allows a monitoring of C 3 building envelopes for structural mechanical changes caused by physical changes within the component through mechanical or thermal loads or deformation and cracks.