Effect of corrosion on flexural bond strength

  • Akshatha Shetty Department of Civil Engineering, NITK Surathkal-575025
  • Katta Venkataramana Department of Civil Engineering, NITK Surathkal-575025
  • K. S Babu Narayan Department of Civil Engineering, NITK Surathkal-575025
Keywords: OPC concrete, PPC concrete, Corrosion level, NBS beam, Strain, Corrosion current density

Abstract

Corrosion is one of the main causes affecting durability of structures. Corrosion effects on structures cannot be ignored and replaced. To understand the performance of structures there is a need to study the rate at which different corrosion levels occur. Hence the present investigation has been taken up to study the behaviour of NBS (National Bureau of Standard) beam specimens made up of Ordinary Portland Cement (OPC) and Portland Pozzolona Cement (PPC) concrete matrix were subjected to accelerated corrosion for different corrosion levels of 2.5 % to 10 % at 2.5 % interval. Results are compared with those for control beam specimen. It is observed that bond stress value decreases with the increase in corrosion levels. Also corrosion leads to the decline of load carrying capacity.

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Published
22-09-2014
Section
Electrochemical Engineering