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Research on the Effect of Fire Thermal Energy on the Microstructure and Properties Mechanical of Fiber-Reinforced Cement Mortars

Author

Listed:
  • Paweł Ogrodnik

    (Institute of Civil Engineering, Warsaw University of Life Sciences, Nowoursynowska 166 Street, 02-787 Warsaw, Poland)

  • Gabriela Rutkowska

    (Institute of Civil Engineering, Warsaw University of Life Sciences, Nowoursynowska 166 Street, 02-787 Warsaw, Poland)

  • Aleksandra Powęzka

    (Faculty of Safety Engineering and Civil Protection, Fire University, Słowackiego 52/54 Street, 01-629 Warsaw, Poland)

  • Mariusz Żółtowski

    (Institute of Civil Engineering, Warsaw University of Life Sciences, Nowoursynowska 166 Street, 02-787 Warsaw, Poland)

  • Jacek Szulej

    (Faculty of Civil Engineering and Architecture, Lublin University of Technology, Nadbystrzycka 40 Street, 20-618 Lublin, Poland)

  • Krzysztof Wiśniewski

    (Institute of Civil Engineering, Warsaw University of Life Sciences, Nowoursynowska 166 Street, 02-787 Warsaw, Poland)

  • Patryk Howorus

    (Institute of Civil Engineering, Warsaw University of Life Sciences, Nowoursynowska 166 Street, 02-787 Warsaw, Poland)

Abstract

Cement mortar is made of a combination of cement, sand, and water, mixed in the right proportions. It is ideal for erecting walls and masonry structures, including those that must bear heavy loads. In addition, it is used in places that are exposed to higher humidity and in facilities located below ground level. The potential uses of a mortar are determined by material modification. The aim of the experimental studies was to evaluate the effect of high temperature on the microstructure and mechanical properties of cement mortars modified with polypropylene fiber. The novelty of this study is an attempt to compare the use of different types of polypropylene fibers in mortars heated at different temperatures. Cement mortars based on Portland cement CEM I 42.5 R with a constant content of three types of fibers in the amount of 0.9 kg/m 3 were designed . The samples were cured and then heated in an oven at 300, 500 and 700 °C. The functional properties of cement mortars, i.e., density, flexural and compressive strength after 28 and 56 days of maturation, as well as flexural and compressive strength at elevated temperature, were determined using samples of 40 × 40 × 160 mm. By modifying cement mortars with fibers, it is possible to obtain a cement composite with good strength parameters which is, at the same time, resistant to high temperature.

Suggested Citation

  • Paweł Ogrodnik & Gabriela Rutkowska & Aleksandra Powęzka & Mariusz Żółtowski & Jacek Szulej & Krzysztof Wiśniewski & Patryk Howorus, 2023. "Research on the Effect of Fire Thermal Energy on the Microstructure and Properties Mechanical of Fiber-Reinforced Cement Mortars," Energies, MDPI, vol. 16(18), pages 1-21, September.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:18:p:6450-:d:1234257
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    References listed on IDEAS

    as
    1. Hui Chen & Xin Huang & Rui He & Zhenheng Zhou & Chuanqing Fu & Jiandong Wang, 2021. "Mechanical Properties of Polypropylene Fiber Cement Mortar under Different Loading Speeds," Sustainability, MDPI, vol. 13(7), pages 1-17, March.
    2. Aleksandra Powęzka & Paweł Ogrodnik & Jacek Szulej & Mariusz Pecio, 2021. "Glass Cullet as Additive to New Sustainable Composites Based on Alumina Binder," Energies, MDPI, vol. 14(12), pages 1-22, June.
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