What are the properties and benefits of using fiber reinforced masonry in construction?7 answersFiber reinforced masonry (FRM) and fiber reinforced concrete (FRC) offer a range of properties and benefits that significantly enhance construction outcomes. The inclusion of fibers, whether natural or synthetic, improves the ductility, strength, and thermal resistance of masonry and concrete materials, making them more resilient and efficient in various applications. For instance, jute fibers in composite mortars have shown to increase both thermal resistance and mechanical energy dissipation, with longer fibers enhancing mechanical energy dissipation and shorter fibers improving insulation capacity. Similarly, the addition of cellulose fibers, at both micro and nano scales, to cement-based composites has demonstrated varied effects on mechanical properties, with nanocellulose fibers slightly increasing flexural strength.
The use of FRC in water-retaining structures (WRSs) like flood defense walls, weirs, and swimming pools has been shown to significantly reduce reinforcement requirements compared to conventional reinforced concrete solutions, offering a cost-effective and environmentally friendly alternative. Moreover, the application of different natural and artificial fibers in FRC has led to improvements in compressive strength and durability under various conditions, with artificial fibers showing superior performance in enhancing the structure's strength and longevity.
In the context of seismic resilience, fiber reinforcement in adobe masonry has resulted in increased tensile strength, friction coefficient, and compressive strength, thereby enhancing the seismic performance of buildings in earthquake-prone areas. Additionally, the utilization of waste materials as fibers in adobe brick production not only improves the physical and mechanical properties of the bricks but also contributes to sustainable construction practices.
Recent advancements in FRM techniques, such as the use of Fabric Reinforced Cementitious Matrix (FRCM) composites, offer compatible and effective solutions for strengthening masonry structures, particularly historical buildings and monuments, due to their fire and heat resistance and vapor permeability. These innovative approaches underscore the evolving nature of fiber reinforcement technologies in construction, providing a pathway towards more resilient, efficient, and sustainable building practices.
How do the fibers in gypsum boards contribute to energy absorption during seismic events?4 answersThe fibers in gypsum boards contribute to energy absorption during seismic events by increasing the ductility and load-bearing capacity of the boards. The addition of textile waste fibers in the gypsum panels enhances their flexural strength and energy absorption capability. The use of paper fibers in gypsum fiber boards also improves their energy-dissipating capacity. These fibers provide reinforcement and help to distribute the stress and strain during seismic loading, allowing the boards to withstand greater deformation without failure. The combination of fibers and gypsum creates a composite material with high ductility and energy dissipation, making it suitable for seismic applications. The presence of fibers in gypsum boards also reduces the landfilling of textile waste materials, contributing to sustainable waste management practices.
What are some solutions for having a plasterboard?4 answersThere are several solutions for having a plasterboard. One solution is to use a plasterboard that contains an inorganic porous humidity-conditioning material and a radioactive material, which can improve the environment by releasing negative ions. Another solution is to manufacture a novel plasterboard with tapered edges on one surface and parallel tapered ends on the other surface, or with horizontal directional tapered ends orthogonal to the first tapered edges. Additionally, an apparatus can be used to uniformly dry a plasterboard by adjusting the amount of dry air blown onto the board raw material in different rooms of a drier. Another solution is to apply water-glass to the surface of a plasterboard made of hemihydrate gypsum and then harden it, resulting in a plasterboard with excellent resistances to impact and abrasion. Lastly, a plastering work can be done without performing plaster coating on the job site by treating a fibrous board with sodium silicate as a fire retarding agent and mechanically coating plaster onto its surface.
How has bamboo reinforced concrete been used in architecture throughout history?5 answersBamboo reinforced concrete has been used in architecture throughout history as a sustainable and cost-effective alternative to steel reinforcement. Bamboo's high compressive and tensile strength make it suitable for use in concrete structures. It has been used in various applications such as columns, beams, and architectural elements. Researchers have conducted experimental tests to identify the optimum shape and form of bamboo for concrete reinforcement, leading to improvements in flexural capacity. Engineered forms of bamboo, such as laminated bamboo and bamboo scrimber, have been developed with better physical and mechanical characteristics for structural applications. Bamboo reinforcement in concrete can enhance the strength and toughness of the matrix, with an optimum reinforcement value of around 4%. The use of fire-retardant coatings and water replant coatings, along with mechanical anchorage, can enhance the bond strength between bamboo reinforcement and the cement matrix. Overall, bamboo reinforced concrete offers potential for sustainable and low-cost housing solutions.
What are the advantages and disadvantages of using fiber reinforced materials in building construction?5 answersFiber-reinforced materials offer several advantages in building construction. They have enhanced mechanical properties, such as increased strength, impact resistance, and energy absorption capacity. Additionally, the use of fiber reinforcement can improve the characteristics of concrete, including cracking, freezing, durability, erosion, and permeability. Fiber-reinforced materials are also considered sustainable and eco-friendly, as they can be made from biopolymers and natural fibers. However, there are some disadvantages to consider. The selection of fiber material can be challenging, as it depends on the specific properties required at the construction site. Additionally, there may be limitations in terms of the optimal fiber content, as exceeding a certain threshold can have negative effects on the material's performance. Overall, fiber-reinforced materials offer numerous benefits for building construction, but careful consideration is needed to ensure optimal performance and avoid potential drawbacks.
How effecient the banana stem fiber as a raw material for construction industry?1 answersBanana stem fiber has been investigated as a raw material for the construction industry. Researchers have found that banana fibers can be used in composites such as mortar and concrete to improve their strength properties. The addition of banana fiber to lightweight blocks has been shown to increase water absorption and changing length, while decreasing density. Non-woven banana fiber reinforced epoxy composites have demonstrated improved physical and mechanical characteristics, such as tensile and flexural strength, impact strength, and hardness. Banana fibers have also been used in compressed earth blocks, resulting in blocks with enhanced compressive and flexural strength. Additionally, banana stem fiber has been used in the production of pulp and paper, with blended pulp showing improved bursting strength compared to recycled pulp. Overall, these studies suggest that banana stem fiber can be an efficient raw material for the construction industry, offering improved properties and cost-effectiveness.