Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
권호 표지
DOI QR코드

DOI QR Code

Evaluation of Tensile Stress-strain Relationship of Masonry Elements

조적요소의 인장응력-변형률 관계 평가

  • Received : 2018.12.11
  • Accepted : 2019.03.18
  • Published : 2019.03.30
⟨ Previous Next ⟩

Abstract

The purpose of this study is to provide and evaluate the tensile properties of masonry element such as tensile strength, strain, modulus of elasticity and stress-strain relationship through the direct tension test with varies of mortar strength. From the experiment, the tension fracture was observed along the interfaces between the brick and the mortar. Tension properties of masonry element was significantly affected by compressive strength of mortar, $f_m$, indicating that higher tensile strength and modulus of elasticity of masonry element were obtained with increase of $f_m$. The strain of a masonry element was inversely proportional to $f_m$ due to the lower ductility of a higher mortar strength. A tensile stress-strain relationship of masonry element was generalized based on the numerical analysis and the regression analysis using test data. The proposed model shows fairly good agreement with the test measurements.

Keywords

Acknowledgement

Supported by : 한국연구재단

References

  1. Architectural Institute of Korea (2018). "Site Inspection and Damage Investigation of Buildings by Earthquakes in Gyeongju and Pohang, Spacearts Co.
  2. ASTM E447-97 (1997). Standard Test Method for Compressive Strength of Masonry Prisms, ASTM International, US.
  3. FEMA 273(1997). NHERP Guidelines for the Seismic Rehabilitation of Buildings, Washington DC, Federal Emergency Management Agency.
  4. FEMA 306(1999). Evaluation of Earthquake Damaged Concrete and Masonry Wall Building, Wachington DC, Federal Emergency Management Agency.
  5. Hetherington, S.(2015). "A Comparative Study into the Tensile Bond Strength of the Brick Mortar Interface of Natural Hydraulic Lime and Portland Cement Mortars," Masonry International, V.28, No.2, pp. 37-43.
  6. Kim, H-B., Lee, J-S., & Han, S-W.(2001). "The Comparison of Strength of Pier in Different Provosopms," Spring Conference, Earthquake Engineering Society of Korea, V.5 No.1., pp. 312-319.
  7. Lee, H.S., & Yu, E.J.(2001). "Austrlian Seismic Code for Unreinforced Masonry," Spring Conference, Korea Concrete Institute, V.13, No.1, pp.815-820.
  8. Lee, J.H.(2004). "Seismic Capacity and Seismic Retrofiting of Low Rise Building, Ph.D thesis, Kwangwoon University, Republic of Korea.
  9. Lourenco, P.B., Barros, J.A., Almeida, J.C.(2002), Characterization of Masonry under Uniaxial Tension, Report 02-DEC/E-12, ISO-BRICK from the European Commission.
  10. MacGregor, J.G., & Wight, J.K.(2005). Reinforced Concrete: Mechanics and Design, Singapore, Prentice Hall.
  11. Mun, I.W., & Lee, H.K.(1992). "A Study on the Behabior of Low Story Brick Structures," Spring Conference (Structure), Architectural Institute of Korea V.12, No.1, pp. 289-292.
  12. Noguchi, T., Tomosawa, F., Nemati, K. M., Chiaia, B. M., & Fantilli, A. P. (2009). "A Practical Equation for Elastic Modulus of Concrete," ACI Structural Journal, V. 106, No. 5, Sept.-Oct. pp. 690-696.
  13. Park, S.S., & Kim, J.H.(2010). "Study on Adhesive Stength of Polymer Modified Cement Mortar for Maintenance in Concrete Structure," Journal of The Korea Institute for Structural Maintenance Inspection, V.14, No.5, pp. 128-135. https://doi.org/10.11112/jksmi.2010.14.5.128
  14. Yang, K.H., Mun, J.H., Cho, M.S., & Kang, T.H. (2014). "Stress-strain Model for Various Unconfined Concrete in Compression," ACI Structural Journal, July-August, pp. 819-826.
  15. Yang, K.H.(2016). "Shear Stress-relative Slip Relationship at Concrete Interfaces," Advances in Materials Science and Engineering, V.2016, Article ID6475161, 9 pages.
  16. Yang, K.H., Lee, Y., & Hwang, Y.H.(2019). "A Stress-Strai Model for Brick Prism under Uniaxial Compression," Advances in Civil Engineering (under review).
  17. Yu, E., Kim, M.J., Lee, S.H., & Kim, C.M.(2015). "Relation between Shear Strength of Masonry Infills and Seismic Performance of Masonry-infilled Frames," Journal of The Earthquake Engineering Society of Korea, V.19, No.4, pp. 173-181. https://doi.org/10.5000/EESK.2015.19.4.173
  18. Yu, H.R., & Kwon, K.H.(2011). "A Study on Mechanical Characteristics of Masonry Structure Constructed by Clay Brick with Lime Mortar," Journal of The Korea Institute for Structural Maintenance Inspection, V.15, No.4, pp. 87-98. https://doi.org/10.11112/jksmi.2011.15.4.087