ACI 440.7: Guide for Design & Construction of Externally Bonded FRP Systems for Stren

[ir_71]

ACI 440.7R-10 Guide for Design & Construction of Externally Bonded FRP Systems for Strengthening Unreinforced Masonry Structures

Author: ACI Committee 440 | Size: 34.41 MB | Format: PDF | Quality: Image PDF | Publisher: ACI | Year: 2010 | pages: 46 | ISBN: 9780870313738

Fiber-reinforced polymers (FRPs) have been proposed for use instead of steel prestressing tendons in concrete structures. The promise of FRP materials lies in their high-strength, lightweight, non corroding, nonconducting, and nonmagnetic properties.

This document offers general information on the history and use of FRP for prestressing applications and a description of the material properties of FRP. The document focuses on the current state of design, development, and research needed to characterize and ensure the performance of FRP as prestressing reinforcement in concrete structures.

The proposed guidelines are based on the knowledge gained from worldwide experimental research, analytical work, and field applications of FRPs used as prestressed reinforcement. The current development includes a basic understanding of flexure and axial prestressed members, FRP shear reinforcement, bond of FRP tendons, and unbonded or external FRP tendons for prestressing applications. The document concludes with a description of research needs.

Contents:

Chapter 1—Introduction
Chapter 2—FRP tendons and anchorages,
Chapter 3—Flexural design
Chapter 4—Serviceability
Chapter 5—Shear
Chapter 6—Bond and development
Chapter 7—Unbonded and external tendon systems
Chapter 8—Pile driving and in-place flexure,
Chapter 9—Research needs
Chapter 10—References
Appendix A—Design example

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[poolmand]

ACI PRC-440.7-22: Externally Bonded Fiber-Reinforced Polymer Systems Design and Construction for Strengthening Masonry Structures - Guide

Author(s)/Editor(s): ACI Committee 440 | Size: 41.5 MB| Format: PDF| Quality: Scanner | ISBN: 9781641952033

Fiber-reinforced polymer (FRP) systems can be used for strengthening masonry structures and masonry elements among other options such as external steel plates, section enlargement with reinforced concrete (RC) overlays or shotcrete, steel bracing, and internal steel reinforcement. FRP systems offer advantages over traditional strengthening techniques: they are lightweight, relatively easy to install, and are corrosion-resistant. Due to the characteristics of FRP materials as well as the behavior of masonry members strengthened with FRP, specific guidance on the use of these systems is needed. This document offers a description of the unique material properties of FRP and committee recommendations on the engineering, construction, and inspection of FRP systems used to strengthen masonry. These guidelines are based on the knowledge gained from experimental research, analytical work, and field applications of FRP systems used to strengthen masonry structures.

Keywords:

buildings; columns; confinement; cracking; cyclic loading; detailing; earthquake resistance; fiber-reinforced polymers (FRPs); fibers; flexure; masonry; shear; strengthening; structural analysis; structural design; unreinforced; walls; wind resistance.

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