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Mahdireza Yarigarravesh

Topic: Effect of alkaline and sea water solutions on the bond at the interface between bidirectional aramid fiber and masonry

Authors: Vahab Toufigh*, Mahdireza Yarigarravesh**
* Assistant Professor, Sharif University of Technology, Department of Civil Engineering
**Ph.D. Candidate, Sharif University of Technology, Department of Civil Engineering

Presented by Mr Mahdireza Yarigarravesh, Department of Civil Engineering, Sharif University of Technology, Iran

Abstract

Nowadays, the application of fiber reinforced polymers (FRPs) became prevalent in structural engineering due to its properties such as light weight, formability, resistance against corrosion and high tensile strength. Most of researchers in last decades focused on the effect of moisture and temperature on the bond at interface between FRPs and concrete, however, a few investigations have been reported about the effect of chemical solutions on the other construction materials such as masonry.

This research aims to investigate the effect of alkaline (pH of 10) and sea water solutions on the bond at interface between bidirectional aramid fiber and masonry after six months exposure. 50 brick specimens were prepared by wet lay-up technique and exposed to alkaline solutions for 1, 3 and 6 months. Universal testing machine was used to evaluate debonding force degradation between FRP and masonry substrate.

Results indicate that alkaline pH of 10 caused 45 % reduction in bond between FRP and masonry, while sea water solution had the less effect by 23 % decrease.

Keywords: Fiber-reinforced polymer; Chemical solutions; Masonry.

Presenter’s resume

Ph.D. candidate in Civil Engineering,  Sharif University of Technology,2017
M.Sc. in Civil Engineering, Sharif University of Technology,2012
B.Sc. in Civil Engineering, The University of Tehran, Feb 2006

Research Interests:
Rehabilitation and Strengthening Techniques for Existing Structures
Application of Fiber Reinforced Polymer (FRP)

Mahdirzea Yarigarravesh is Ph.D. candidate in Civil Engineering of Sharif University of Technology. His interest is mainly focused on the environmental effects on the bond at the interface between fiber composites and construction materials such as concrete, masonry and wood.