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Use of cement suspension as an alternative matrix material for textile-reinforced concrete

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Item Type:Article
Title:Use of cement suspension as an alternative matrix material for textile-reinforced concrete
Creators Name:Fürst, R., Fürst, E., Vlach, T., Řepka, J., Pokorný, M. and Mózer, V.
Abstract:Textile-reinforced concrete (TRC) is a material consisting of high-performance concrete (HPC) and tensile reinforcement comprised of carbon roving with epoxy resin matrix. However, the problem of low epoxy resin resistance at higher temperatures persists. In this work, an alternative to the epoxy resin matrix, a non-combustible cement suspension (cement milk) which has proven stability at elevated temperatures, was evaluated. In the first part of the work, microscopic research was carried out to determine the distribution of particle sizes in the cement suspension. Subsequently, five series of plate samples differing in the type of cement and the method of textile reinforcement saturation were designed and prepared. Mechanical experiments (four-point bending tests) were carried out to verify the properties of each sample type. It was found that the highest efficiency of carbon roving saturation was achieved by using finer ground cement (CEM 52.5) and the pressure saturation method. Moreover, this solution also exhibited the best results in the four-point bending test. Finally, the use of CEM 52.5 in the cement matrix appears to be a feasible variant for TRC constructions that could overcome problems with its low temperature resistance.
Keywords:Textile-Reinforced Concrete, Non-Combustibility, Cohesion, High-Performance Concrete, Carbon Fibers, Cement Matrix
Page Range:2127
Date:1 May 2021
Official Publication:https://doi.org/10.3390/ma14092127
PubMed:View item in PubMed

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