Baskar Prabu, Annadurai Shalini, Sekar Kaviya, Prabakaran Mayakrishnan
Department of Civil Engineering, Sona College of Technology, Salem 636 005, India.
Department of Chemistry, Dongguk University, Seoul 04620, Republic of Korea.
Polymers (Basel). 2023 Mar 16;15(6):1484. doi: 10.3390/polym15061484.
Alternative eco-friendly and sustainable construction methods are being developed to address growing infrastructure demands, which is a promising field of study. The development of substitute concrete binders is required to alleviate the environmental consequences of Portland cement. Geopolymers are very promising low-carbon, cement-free composite materials with superior mechanical and serviceability properties, compared to Ordinary Portland Cement (OPC) based construction materials. These quasi-brittle inorganic composites, which employ an "alkali activating solution" as a binder agent and industrial waste with greater alumina and silica content as its base material, can have their ductility enhanced by utilising the proper reinforcing elements, ideally "fibres". By analysing prior investigations, this paper explains and shows that Fibre Reinforced Geopolymer Concrete (FRGPC) possesses excellent thermal stability, low weight, and decreased shrinking properties. Thus, it is strongly predicted that fibre-reinforced geopolymers will innovate quickly. This research also discusses the history of FRGPC and its fresh and hardened properties. Lightweight Geopolymer Concrete (GPC) absorption of moisture content and thermomechanical properties formed from Fly ash (FA), Sodium Hydroxide (NaOH), and Sodium Silicate (NaSiO) solutions, as well as fibres, are evaluated experimentally and discussed. Additionally, extending fibre measures become advantageous by enhancing the instance's long-term shrinking performance. Compared to non-fibrous composites, adding more fibre to the composite often strengthens its mechanical properties. The outcome of this review study demonstrates the mechanical features of FRGPC, including density, compressive strength, split tensile strength, and flexural strength, as well as its microstructural properties.
为满足不断增长的基础设施需求，人们正在开发替代的环保和可持续建筑方法，这是一个很有前景的研究领域。需要开发替代混凝土粘结剂以减轻波特兰水泥对环境的影响。与基于普通波特兰水泥（OPC）的建筑材料相比，地质聚合物是非常有前景的低碳、无水泥复合材料，具有优异的机械性能和使用性能。这些准脆性无机复合材料采用“碱激活溶液”作为粘结剂，以氧化铝和二氧化硅含量较高的工业废料为基础材料，通过使用合适的增强元素，理想情况下是“纤维”，可以提高其延展性。通过分析先前的研究，本文解释并表明纤维增强地质聚合物混凝土（FRGPC）具有优异的热稳定性、低重量和降低的收缩性能。因此，强烈预测纤维增强地质聚合物将迅速创新。本研究还讨论了FRGPC的历史及其新拌性能和硬化性能。对由粉煤灰（FA）、氢氧化钠（NaOH）和硅酸钠（NaSiO）溶液以及纤维制成的轻质地质聚合物混凝土（GPC）的吸湿性能和热机械性能进行了实验评估和讨论。此外，通过提高试件的长期收缩性能，延长纤维措施变得有利。与非纤维复合材料相比，在复合材料中添加更多纤维通常会增强其机械性能。本综述研究的结果展示了FRGPC的机械特性，包括密度、抗压强度、劈裂抗拉强度和抗弯强度，以及其微观结构特性。
