Strength of Masonry Walls Retrofitted with Epoxy Resin Injection

Abstract:

This paper presents the results of the fundamental loading tests with brick elements strengthened by the epoxy resin injection method. Three types of loading tests were performed to evaluate the effects of epoxy resin injection on compressive, shear, and flexural characteristics. The variables considered in this experiment were the strength of the mortar and the applied axial force. To verify the effects of this strengthening method, seismic loading tests were performed on three brick walls. From the test results, an increase in the strength of the element was observed in each test. However, the strength of the mortar did not affect the shear and flexural strength of the brick elements. We proposed equations to estimate the strength of the elements strengthened by the epoxy resin injection method. Improvements to the seismic performance of the brick wall strengthened with epoxy resin were explicitly confirmed.

• Periodical: Applied Mechanics and Materials (Volume 82)
• Pages: 545-550
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.82.545
• Online since: July 2011
• Authors: Hideo Araki, Akira Yasojima, Junichi Kagawa
• Keywords: Brick Wall, Epoxy Resin (ER), Flexural Strength, Historic Building, Shear Strength, Strengthening

References

[1] N. Takiyama, et al.: Cyclic Out-of-Plane flexural Behavior of Masonry Walls Rehabilitated by Inserting Stainless Pins, the 14th WCEE, (2008)

[2] M. Sawaide, et al.: Properties of Epoxy Resin Used in Reinforcement of Hiroshima Memorial Atomic Bomb Dome, after Lapse of 30 Years from Application, Summaries of Technical of Annual Meeting Architectural Institute of Japan, (1998)

[3] M. Yamamoto, et al.: Experimental Study on Structural Performance of Post-Tensioned Unreinforced Brick Masonry Bearing Walls, Part 1 In-Plane Experimental Tests of Small Size Specimens, Summaries of Technical of Annual Meeting Architectural Institute of Japan, (2009)