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Use of Cement Suspension as an Alternative Matrix Material for Textile-Reinforced Concrete

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    0542556 - ÚOCHB 2022 RIV CH eng J - Journal Article
    Fürst, R. - Fürst, Eliška - Vlach, T. - Řepka, J. - Pokorný, M. - Mózer, V.
    Use of Cement Suspension as an Alternative Matrix Material for Textile-Reinforced Concrete.
    Materials. Roč. 14, č. 9 (2021), č. článku 2127. E-ISSN 1996-1944
    Institutional support: RVO:61388963
    Keywords : textile-reinforced concrete * non-combustibility * cohesion * high-performance concrete * carbon fibers * cement matrix
    OECD category: Materials engineering
    Impact factor: 3.623, year: 2020
    Method of publishing: Open access
    https://doi.org/10.3390/ma14092127

    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.
    Permanent Link: http://hdl.handle.net/11104/0319942

     
     
Number of the records: 1