About this Research Topic
Fiber-reinforced concrete (FRC) and other fiber-reinforced construction materials (FRCM) are becoming popular in several civil engineering applications (storage tanks, pavements, tunnels, hydraulic structures, etc.) due to their high fracture toughness, tensile strength and good durability in harsh environments. The FRC and other FRCM achieve their proprieties of the use of different industrial fibers i.e., steel, glass, polypropylene, etc. Although, many of the issues of conventional materials have been resolved, but these solutions are expensive and have high carbon footprint. Moreover, the addition of fibers to the construction materials such as paste, mortar and concrete create workability issues which increases the requirement of plasticizers to compensate for the loss of workability. The use of energy-intensive fibers and costly plasticizers raises concerns over the usage of fiber in construction materials.
Fiber-reinforced concrete (FRC) is becoming popular due to its higher tensile strength, fatigue and fracture resistance compared to conventional plain concrete (PC). Normally, PC is reinforced with industrially manufactured fibers, in order to produce FRC. Conventional fibers, such as steel, polypropylene and glass fibers are expensive and are not easily available especially in developing regions. Due to energy-intensive process and high transportation costs, conventional fiber-reinforcements can enhance the carbon footprint of the final concrete product. In addition to that, the use of plasticizers to resolve the workability issues makes the FRC production expensive. Therefore, it is essential to look for eco-friendly and cheap solutions to resolve the problems of FRC.
Sustainable development of fiber-reinforced concrete (FRC) and other fiber-reinforced construction materials (FRCM) is never possible without considering the eco-friendly use of fibers. Unlike industrially manufactured fibers which possess very high carbon footprint, organic fibers and waste fibers possess very small footprint. Therefore, to resolve environmental economical challenges, FRC and other FRCM should be investigated with organic and waste fibers. Furthermore, we can resolve the sustainability issues of FRC and other FRCM by promoting the usage of waste-binding materials and recycled aggregates in conjunction with industrial and/or waste fibers.
This Research Topic is devoted to the publication of new research papers related to sustainable development of fiber-reinforced concrete. Following themes are included in this Research Topic:
• Improved design of fiber-reinforced concrete or any other construction materials such as paste and mortar
• Organic fiber-reinforced concrete
• Waste fiber-reinforced concrete
• Fiber-reinforced concrete with recycled aggregates
• Fiber-reinforced concrete with waste mineral admixtures (fly ash, silica fume, slag, etc.)
• Life cycle assessment of fiber-reinforced concrete with new and waste fibers
Babar Ali has acted in an advisory capacity and contributed to the development of this collection.
Keywords: plant fibers, waste fibers, durability, sustainability, life cycle assessment, carbon footprint
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