Experimental Developments on Corrosion Resistivity of Low Calcium Fly Ash-Based Geopolymer Concrete
G Rambabu1, Divya Anusha Naidu2, Dumpa Venkateswarlu3
1G Rambabu S, Department of Civil Engineering, Godavari Institute of Engineering and Technology, Rajahmundry, India.
2Divya Anusha Naidu, Department of Civil Engineering, Godavari Institute of Engineering and Technology, Rajahmundry, India.
3Dr. Dumpa Venkateswarlu, Department of Civil Engineering, Godavari Institute of Engineering and Technology, Rajahmundry, India.
Manuscript received on 17 March 2019 | Revised Manuscript received on 22 March 2019 | Manuscript published on 30 July 2019 | PP: 5320-5327 | Volume-8 Issue-2, July 2019 | Retrieval Number: B1089078219/19©BEIESP | DOI: 10.35940/ijrte.B1089.078219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Portland cement production is an main component in making of “concrete, which contributes significant amount of greenhouse gas, because in the process of production of Portland cement also releases about one ton of carbon dioxide gas into the atmosphere. Therefore, the introduction of a novel binder called ‘geopolymer’ by Davidovits promises a good prospect for application in the concrete industry as an alternative binder to Portland cement”. In terms of reducing global warming, the technology based on geo-polymer could reduce the C02 emission to the atmosphere caused by aggregates and cement industries by 80%. Fly ash-based geopolymer concrete “manufactured using fly ash as its source material and does not use Portland cement at all. Not only fly ash, alkaline solution is being utilized to make geopolymer paste which binds the aggregates to form geopolymer concrete. The geopolymer concrete possess excellent mechanical characteristics and better durability characteristics like permeability, resistance against sulphate and acids.”
In reinforcement the corrosion is the single most common source of damage and it is usually clear that lack of concrete, inadequate cover to the reinforcement or the available impurities (and sometimes all three) is the prime cause. In the present work, Open Circuit Potential (OCP) method was able to determine the corrosion activity in the reinforced beams. The effect of corrosion on the tensile behavior of reinforcement under different rates of corrosion was compared. The test results reveals that the Geopolymer concrete performs superior to OPC concrete.
Keywords: Open Circuit Potential (OCP), CSHs, CO2, AI.
Scope of the Article: Concrete Engineering