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Modelling degradation of concrete subject to sulphuric acid attack

Modelling degradation of concrete subject to sulphuric acid attack

Alani, Morteza and Faramarzi, Asaad (2013) Modelling degradation of concrete subject to sulphuric acid attack. In: Proceedings of the International Conference on Computational Mechanics, Durham, UK, 25-27 March 2013, CM13. University of Durham, School of Engineering, Durham, UK. ISBN 978-0953555840

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Abstract

Concrete corrosion due to sulphuric acid attack is a phenomenon that usually takes place in underground sewer pipes. This phenomenon is known to be one of the main contributory factors for degradation of concrete sewer pipes. This paper proposes to use a novel data mining technique, i.e. evolutionary polynomial regression (EPR), to predict (i) the mass loss and (ii) compressive strength of concrete subject to sulphuric acid attack. EPR is a hybrid data-driven technique based on evolutionary computation designed to seek polynomial or pseudo-polynomial structures representing the system. A comprehensive dataset from literature is collected to train and develop the EPR models. The data contains various information including concrete mixture as well as concrete mass loss and compressive strength at different ages. The results show that the first EPR model can successfully predict the mass loss of concrete specimens exposed to different severities of sulphuric acid attack providing the concrete mixture parameters as input. The predictions provided by the second EPR model have also shown that the proposed model is highly accurate and robust in predicting compressive strength of the various concrete mixtures at different ages. Parametric studies of the models show that the proposed models are capable of representing the degree to which individual contributing parameters can affect the mass loss and compressive strength of concrete. In addition using the developed models and optimisation techniques the optimum concrete mix designs that result in maximum compressive strength and minimum degradation are obtained.

Item Type: Conference Proceedings
Title of Proceedings: Proceedings of the International Conference on Computational Mechanics, Durham, UK, 25-27 March 2013, CM13
Additional Information: [1] This paper was presented at The International Conference on Computational Mechanics held from 25-27 March 2013 in Durham, UK. The conference was jointly organized by Durham University and the UK Association of Computational Mechanics in Engineering (ACME).
Uncontrolled Keywords: concrete degradation, corrosion, sewer pipes, sulphuric acid attack, evolutionary computing
Subjects: T Technology > TH Building construction
T Technology > TP Chemical technology
Pre-2014 Departments: School of Engineering
School of Engineering > Department of Civil Engineering
Related URLs:
Last Modified: 14 Oct 2016 09:26
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/11133

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