Numerical and Experimental Investigation for Determining the Opening Mode Toughness of Concrete Using Cracked Brazilian Disk Test

Document Type : Original Article

Authors

1 Department of Civil Engineering, Sharif University of Technology, Tehran, Iran

2 Department of Mining Engineering, Hamedan University of Technology, Hamedan, Iran

3 Distinguished Professor, Department of Civil Engineering, Sharif University of Technology, Tehran, Iran

4 Department of Mining Engineering, Bafgh Branch, Islamic Azad University, Bafgh, Iran

Abstract

In this paper, a simultaneous experimental and numerical analysis of opening mode toughness in The Pre-joined Brazilian disc using Brazilian tests are carried out. These numerical results are compared with the existing experimental results. For this purpose, two concrete disc specimens of 54 mm diameter and 27 mm thick were prepared. These specimens have a central joint of 20 mm in length and an opening in mm 1. Specimens are made from a mixture of water, fine sand, and cement with a ratio of 1-5 / 0-1. The same specimens are numerically simulated by a two-dimensional particle flow code (PFC).The results indicate that the crack formed from the tip of the joint and grows parallel to the load and connects to the edge of the specimen. The Fracture toughness obtained from the numerical method is in good agreement with experimental results.

Keywords

References

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Journal of Concrete Structures and Materials
Volume 1, Issue 2 - Serial Number 2
December 2016
Pages 34-46

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History

  • Receive Date: 22 June 2017
  • Revise Date: 24 July 2017
  • Accept Date: 24 July 2017

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