Title:
Near-Surface-Mounted Flexural Strengthening of Existing Concrete Structures
Author(s):
Joseph L. Yamin and Daniel T. Millman
Publication:
Concrete International
Volume:
46
Issue:
10
Appears on pages(s):
55-58
Keywords:
reinforcement, bridge, bond, design
DOI:
10.14359/51743271
Date:
10/1/2024
Abstract:
Near-surface-mounted (NSM) reinforcement can be used for strengthening of concrete members without extensive demolition of concrete sections. The article offers a historical review of this strengthening method and discusses its basic mechanics and design considerations, as well as projects where NSM was used for flexural strengthening of bridge elements.
Related References:
1. Asplund, S.O., “Strengthening Bridge Slabs with Grouted Reinforcement,” ACI Journal Proceedings, V. 45, No. 1, Jan. 1949, pp. 397-406.
2. ACI Committee 440, “Design and Construction of Externally Bonded Fiber-Reinforced Polymer (FRP) Systems for Strengthening Concrete Structures—Guide (ACI PRC-440.2-23),” American Concrete Institute, Farmington Hills, MI, 2023, 109 pp.
3. AASHTO NSMT-1, “Guide for Design and Construction of Near-Surface Mounted Titanium Alloy Bars for Strengthening Concrete Structures,” American Association of State and Highway Transportation Officials, Washington, DC, 2020, 48 pp.
4. Adkins, J., and George, W., “Titanium Finds a Home in Civil Engineering,” Concrete International, V. 39, No. 12, Dec. 2017, pp. 51-55.
5. “AASHTO LRFD Bridge Design Specifications,” eighth edition, American Association of State and Highway Transportation Officials, Washington, DC, 2017, 1762 pp.