Characterization of carbon fiber reinforced conductive mortars filled with recycled ferrochrome slag aggregates
Open Access
- 30 September 2022
- journal article
- Published by Yildiz Technical University in Journal of Sustainable Construction Materials and Technologies
- Vol. 7 (3), 145-157
- https://doi.org/10.47481/jscmt.1182553
Abstract
Recently, it has been known that carbon fiber, a conductive fiber, is used in different mixture designs and the development of electrically conductive cementitious materials. However, the evaluation of ferrochrome slag as a recycled aggregate in the mixture of these special concretes has still not been investigated. In this study, electrically conductive mortars were produced using 100% recycled ferrochrome slag aggregate with a particle size of less than 1 mm as filling material and using carbon fiber in 4 different ratios, 0%, 0.5%, 0.75%, and 1%. To investigate the electrical conductivity properties, the resistivity values of the samples were measured at five different times within 2–180 days. In addition, 28-day compressive strength, flexural strength, dynamic resonance, ultrasonic pulse velocity, Leeb hardness, scanning electron microscope, and X-Ray Diffraction tests were performed on all samples. The results were compared with the literature, proving that ferrochrome slag could be used as a reasonable aggregate in conductive mortars. The age effect was minimal in CF-added mixtures. With the addition of 1% CF, the resistivity values decreased approximately 40 times compared to the reference. Moreover, SEM analyses of the CF-0.75 sample showed that the CFs adhered to form a conductive network between the components in the ferrochrome-filled compact structure.Keywords
This publication has 48 references indexed in Scilit:
- Investigations on scalable fabrication procedures for self-sensing carbon nanotube cement-matrix composites for SHM applicationsCement and Concrete Composites, 2016
- Sulfate resistance of low energy SFC no-cement mortarConstruction and Building Materials, 2016
- Effect of lime and ferrochrome ash (FA) as partial replacement of cement on strength, ultrasonic pulse velocity and permeability of concreteConstruction and Building Materials, 2015
- Environmental and technical assessment of ferrochrome slag as concrete aggregate materialConstruction and Building Materials, 2013
- Strain sensing of carbon fiber reinforced geopolymer concreteMaterials and Structures, 2011
- Improving the damping properties of concretePublished by Taylor & Francis Ltd ,2010
- Damage in carbon fiber-reinforced concrete, monitored by both electrical resistance measurement and acoustic emission analysisConstruction and Building Materials, 2008
- Electrical conductivity of the carbon fiber conductive concreteJournal of Wuhan University of Technology-Mater. Sci. Ed., 2007
- Air‐void characterisation of foam concreteCement and Concrete Research, 2007
- Electrical conductivity of self-monitoring CFRCCement and Concrete Composites, 2005