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The use of fibers to address tensile cracking in alkali-activated concrete (AAC) is a topic of ongoing research. The addition of fibers enhances the tensile and flexural characteristics of all types of concrete including AAC. However, the mixing process, the setting time, and the workability are compromised due to the presence of fibers in the hardened matrix. There are different material categories of fibers such as steel, synthetic, carbon, and organic fibers that can impart different characteristics depending on the intended usage of concrete. The present chapter reviews the different types, orientations, dosages, and geometric properties of fibers included in AAC. along with the effects of fiber addition on the mix design, mixing and curing procedure of concrete, as well as the fresh and hardened characteristics of fiber-reinforced alkali-activated concrete (FRAAC). The use of statistical models to predict the mechanical characteristics of FRAAC is also discussed. Finally, the chapter presents the advantages, disadvantages, and safety precautions for this material followed by recommendations for practical usage.

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Properties of Fiber-Reinforced Alkali-Activated Concrete (FRAAC)

  • 章节

  • 发表日期：

    2026年

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  • Arkamitra Kar,
  • Pujitha Ganapathi Chottemada,
  • Lucija Hanžič,
  • Sri Kalyana Rama Jyosyula,
  • Patricia Kara De Maeijer,
  • Behzad Nematollahi,
  • Kruthi Kiran Ramagiri,
  • Laura Rossi,
  • Aljoša Šajna,
  • Shizhe Zhang,
  • Mingzhong Zhang,
  • Guang Ye,
  • Frank Dehn

摘要

The use of fibers to address tensile cracking in alkali-activated concrete (AAC) is a topic of ongoing research. The addition of fibers enhances the tensile and flexural characteristics of all types of concrete including AAC. However, the mixing process, the setting time, and the workability are compromised due to the presence of fibers in the hardened matrix. There are different material categories of fibers such as steel, synthetic, carbon, and organic fibers that can impart different characteristics depending on the intended usage of concrete. The present chapter reviews the different types, orientations, dosages, and geometric properties of fibers included in AAC. along with the effects of fiber addition on the mix design, mixing and curing procedure of concrete, as well as the fresh and hardened characteristics of fiber-reinforced alkali-activated concrete (FRAAC). The use of statistical models to predict the mechanical characteristics of FRAAC is also discussed. Finally, the chapter presents the advantages, disadvantages, and safety precautions for this material followed by recommendations for practical usage.