Experimental Study on the Steel Bar/Wire Mesh Reinforced Preplaced Aggregate Concrete Composite Strengthening of Concrete Square Columns

Abstract:

The authors propose a structural strengthening method combining the concepts of preplaced aggregate concrete (PAC) and steel wire mesh reinforce mortar strengthening. The steel bar/wire mesh reinforce preplaced aggreate concrete (SWPAC) composite structural strengthening is targeted at cases where large increase of structural resistance are required, sectional enlargement is restraint and hash fire protection and durability requirements. The preliminary experimental study shows that the proposed structural strengthening method is practically feasible. The strengthened structure is ductile enough to work as structural members. For thin layer strengthening, lateral confinement of the strengthening concrete would be a key topic for later investigations.

• Periodical: Advanced Materials Research (Volumes 163-167)
• Pages: 3615-3622
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.163-167.3615
• Online since: December 2010
• Authors: Hai Jun Li, Zheng Zhen, Chuan Hao Liang, Ming Sheng Dai, Xiao Hua Lu
• Keywords: Composite Structure, Preplaced Aggregate Concrete (PAC), Steel Wire Mesh, Strength, Structural Strengthening

References

[1] Reported by ACI Committee 304. Guide for the Use of Preplaced Aggregate Concrete for Structural and Mass Concrete Applications, ACI Materials Journal, Vol. 88, No. 6, Nov. -dec(1991).

DOI: 10.14359/1186

[2] ACI RAP-9. Spall Repair by the Preplaced Aggregate Method, ACI Committee E706, (2005).

[3] LI Fengfeng, et al. Advanced Materials Research, Vols. 133-134 (2010): 1247-1252.

[4] ASTM C938-02. Standard Practice for Proportioning Grout Mixtures for Preplaced Aggregate Concrete, American Society for Testing and Materials.

DOI: 10.1520/c0938-16

[5] ASTM C939-02. Standard Test Method for Flow of Grout for Preplaced Aggregate Concrete, American Society for Testing and Materials.

[6] ASTM C940-98a. Standard Test Method for Expansion and Bleeding of Freshly Mixed Grouts for Preplaced Aggregate Concrete in the Laboratory, American Society for Testing and Materials (2003).

DOI: 10.1520/c0940-98ar03

[7] ASTM C941-02. Standard Test Method for Water Retentivity of Grout Mixtures for Preplaced Aggregate Concrete in the Laboratory, American Society for Testing and Materials.

DOI: 10.1520/c0941-02

[8] ASTM C942-99. Standard Test Method for Compressive Strength of Grouts for Preplaced Aggregate Concrete in the Laboratory, American Society for Testing and Materials(2004).

DOI: 10.1520/c0942

[9] ASTM C943-02. Standard Practice for Making Test Cylinders and Prisms for Determining Strength and Density of Preplaced Aggregate Concrete in the Laboratory, American Society for Testing and Materials.

DOI: 10.1520/c0943-17

[10] GB50367-2006. Design Code for Strengthening Concrete Structure[M], Beijing: China Architecture & Building Press, (2006).

[11] Longmin Jiang, Shouping Shang, Fangcheng Liu. Journal of Hunan University of Technology, 2009, 23 (1): 12-18.

[12] Guangjing Xiong, Zhou YAN, Zhanxian Zhu. Journal of Shantou University, 2006, 21 (4): 70-74.