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In recent years, there has been a growing need to find sustainable solutions in the construction industry that would reduce the environmental burden and consumption of natural raw materials. One of the sustainable option is the use of dredged sediments as a substitute for natural aggregates in the production of concrete. Reservoir sediments have significant potential for reuse due to their unique physical and chemical properties, that can contribute to the mechanical properties of the final product. This study investigates the strength properties of composites prepared using reservoir sediments as a partial (20, 60, 100%) replacement of aggregates of fraction either 0/4 mm or 4/8 mm in concrete. The research involves characterizing the physical and chemical properties of the sediments, optimizing their incorporation into composite matrices, and evaluating their mechanical performance through standard compressive strengths tests. Also other parameters necessary for physical performance of building materials such as water absorption representing moisture storage capacity and bulk density of the cured composites were investigated. The results show that composites containing reservoir sediments reached strength values that were comparable to, or exceeded, those of the reference material, depending on the sediment fraction and matrix composition. In the case of 20% replacement of the 4/8mm fraction, the strength properties of the sediment-based composites were higher by about 15–20% compared to conventional fillers. A full (100%) replacement of 4/8 mm aggregate with sediments caused a decrease in the resulting strengths by only 15%. With increasing percentage of aggregate replacement by sediment, the bulk density of the composites decreased, which was observed especially when replacing the 0/4 mm fraction containing more porous and clayey particles, and the water absorption capacity increased. With the 4/8 mm fraction, the bulk density is almost unchanged and remains close to the reference sample because it contains fewer porous grains and therefore the total absorption water capacity increases only minimally. This study provides a foundation for further exploration of sediment-based composites in building materials, construction and other industrial applications.

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Physical Properties of Composites Prepared from Reservoir Sediments as Filler

  • 会议论文

  • 发表日期：

    2026年

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  • Natalia Junakova,
  • Jozef Junak,
  • Alena Sicakova,
  • Adriana Estokova,
  • Magdalena Balintova

摘要

In recent years, there has been a growing need to find sustainable solutions in the construction industry that would reduce the environmental burden and consumption of natural raw materials. One of the sustainable option is the use of dredged sediments as a substitute for natural aggregates in the production of concrete. Reservoir sediments have significant potential for reuse due to their unique physical and chemical properties, that can contribute to the mechanical properties of the final product. This study investigates the strength properties of composites prepared using reservoir sediments as a partial (20, 60, 100%) replacement of aggregates of fraction either 0/4 mm or 4/8 mm in concrete. The research involves characterizing the physical and chemical properties of the sediments, optimizing their incorporation into composite matrices, and evaluating their mechanical performance through standard compressive strengths tests. Also other parameters necessary for physical performance of building materials such as water absorption representing moisture storage capacity and bulk density of the cured composites were investigated. The results show that composites containing reservoir sediments reached strength values that were comparable to, or exceeded, those of the reference material, depending on the sediment fraction and matrix composition. In the case of 20% replacement of the 4/8mm fraction, the strength properties of the sediment-based composites were higher by about 15–20% compared to conventional fillers. A full (100%) replacement of 4/8 mm aggregate with sediments caused a decrease in the resulting strengths by only 15%. With increasing percentage of aggregate replacement by sediment, the bulk density of the composites decreased, which was observed especially when replacing the 0/4 mm fraction containing more porous and clayey particles, and the water absorption capacity increased. With the 4/8 mm fraction, the bulk density is almost unchanged and remains close to the reference sample because it contains fewer porous grains and therefore the total absorption water capacity increases only minimally. This study provides a foundation for further exploration of sediment-based composites in building materials, construction and other industrial applications.