Get Alternative Materials for the Reinforcement and Prestressing PDF
By J.L. Clarke
Metal has regularly been included into concrete constructions to beat its restricted tensile power. Corrosion of the metal reinforcement or prestressing process is a massive challenge, rather in competitive environments, with severe implications for the integrity and sturdiness of the concrete constitution. some of the most promising techniques to this challenge consists of substitute of the metal with man-made fibres. during this e-book, a world panel of authors offers an authoritative assessment of the topic, bringing jointly all elements of the advance of different reinforcing fabrics, and describing their homes and all over the world functions. Civil and structural engineers keen on concrete layout and building, fabrics researchers and complex scholars will locate this e-book a accomplished, up to date and worthy resource of reference.
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Extra resources for Alternative Materials for the Reinforcement and Prestressing of Concrete
77. BS5328, Concrete. British Standards Institution. London. 1990. BS8110, Structural use of concrete, British Standards Institution, London, 1985. THE NEED FOR DURABLE REINFORCEMENT 31 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. E. , Handbook to British Standard BS8110:1985. Structural Use of Concrete, Palladian Publications, London, 1987. BS6349, Maritime structures, British Standards Institution, London, 1984. BS5400, Steel, concrete and composite bridges, Part 4, Code of practice for design of concrete bridges, British Standards Institution, London, 1990.
2 Comparison of materials in terms of modulus of elasticity aNot described in text. 5h. 1 Introduction Corrosion of steel reinforcement is a major concern in concrete construction located in aggressive environments such as coastal and marine structures, chemical plants, water and wastewater treatment facilities and bridges, especially when de-icing chemicals are used. Rust from corroded rebars occupies a larger volume than the iron from which it is formed. This results in large internal pressures which lead to cracking and spalling of concrete and ultimately the failure of the structure.
The process gives a uniform powder coating that flows over the surface of the bar. The thickness is closely controlled to ensure that the bar is adequately protected and yet the surface characteristics, which will influence its bond capacity once embedded in concrete, are not unduly affected. 16 ALTERNATIVE MATERIALS FOR CONCRETE REINFORCEMENT Shortly after spraying, the epoxy coating starts to cure and hardens sufficiently for the bar to be handled. The resin continues to cure on the bar and cools to ambient temperature.
Alternative Materials for the Reinforcement and Prestressing of Concrete by J.L. Clarke