Rutkowska Gabriela, Szulej Jacek, Ogrodnik Paweł
Institute of Civil Engineering, Warsaw University of Life Sciences-SGGW, Nowoursynowska 166, 02-787 Warsaw, Poland.
Faculty of Civil Engineering and Architecture, Lublin University of Technology, 20-618 Lublin, Poland.
Materials (Basel). 2025 May 30;18(11):2565. doi: 10.3390/ma18112565.
Self-compacting concrete (SCC) is an innovative building material that is distinguished by its ability to flow and fill forms without the need for mechanical vibration. The aim of this research was to determine the effect of different types of fibres-steel, glass, and polypropylene-on the properties of both the fresh mix (consistency, density, air content, and viscosity) and the hardened concrete (compressive strength, tensile strength in bending, density, water absorption, and frost resistance). Attention was also paid to CO emissions associated with cement production and the potential of their reduction by using alternative materials. The results of the conducted research demonstrate that, in terms of enhancing the mechanical properties of self-compacting concrete (SCC), the incorporation of glass fibres (GFs) leads to the most significant improvements in compressive and flexural strength-by 1.6% and 29.2%, respectively. Therefore, these fibres can be recommended for use in high-performance structural applications, such as precast elements, load-bearing components, and structures subjected to dynamic loading. Polypropylene fibres (PPFs), owing to their ability to reduce water absorption by 7.3%, may be suitable for elements exposed to high humidity and shrinkage risk, such as tunnels, fire-resistant barriers, or insulating layers. Steel fibres (SFs), in turn, have proven particularly effective in SCC used for industrial flooring and other elements exposed to cyclic dynamic loads.
自密实混凝土（SCC）是一种创新型建筑材料，其特点是能够在无需机械振捣的情况下流动并填充模板。本研究的目的是确定不同类型的纤维——钢纤维、玻璃纤维和聚丙烯纤维——对新拌混凝土（稠度、密度、含气量和粘度）以及硬化混凝土（抗压强度、弯曲抗拉强度、密度、吸水率和抗冻性）性能的影响。同时还关注了与水泥生产相关的二氧化碳排放以及使用替代材料减少排放的潜力。所开展研究的结果表明，就提高自密实混凝土（SCC）的力学性能而言，掺入玻璃纤维（GFs）可使抗压强度和抗弯强度分别显著提高1.6%和29.2%。因此，这些纤维可推荐用于高性能结构应用，如预制构件、承重部件以及承受动态荷载的结构。聚丙烯纤维（PPFs）由于能够使吸水率降低7.3%，可能适用于暴露在高湿度环境且有收缩风险的构件，如隧道、防火屏障或保温层。反过来，钢纤维（SFs）在用于工业地坪及其他承受循环动态荷载的构件的自密实混凝土中已证明特别有效。
