Concrete sewer pipe corrosion induced by sulphuric acid environment

Romanova, Anna, Mahmoodian, Mojtaba, Chandrasekara, Upul and Alani, Amir (2015) Concrete sewer pipe corrosion induced by sulphuric acid environment. International Journal of Civil, Environmental, Structural, Construction and Architectural Engineering, 9 (4). pp. 475-478.

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Abstract

Corrosion of concrete sewer pipes induced by sulphuric acid attack is a recognised problem worldwide, which is not only an attribute of countries with hot climate conditions as thought before. The significance of this problem is by far only realised when the pipe collapses causing surface flooding and other severe consequences. To change the existing post-reactive attitude of managing companies, easy to use and robust models are required to be developed which currently lack reliable data to be correctly calibrated. This paper focuses on laboratory experiments of establishing concrete pipe corrosion rate by submerging samples in to 0.5 pH sulphuric acid solution for 56 days under 10ºC, 20ºC and 30ºC temperature regimes. The result showed that at very early stage of the corrosion process the samples gained overall mass, at 30ºC the corrosion progressed quicker than for other temperature regimes, however with time the corrosion level for 10ºC and 20ºC regimes tended towards those at 30ºC. Overall, at these conditions the corrosion rates of 10 mm/year, 13,5 mm/year and 17 mm/year were observed.

Item Type: Article
Additional Information: © 2015 World Academy of Science, Engineering and Technology
Uncontrolled Keywords: sewer pipes, concrete corrosion, sulphuric acid, concrete coupons, corrosion rate
Subjects: Construction and engineering > Built environment
Construction and engineering > Civil and structural engineering
Construction and engineering
Depositing User: Fabio Tosti
Date Deposited: 26 May 2016 10:46
Last Modified: 05 Jul 2017 09:10
URI: http://repository.uwl.ac.uk/id/eprint/2153

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