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Influence of chloride ions on progress of carbonation in concretes

Wang, Y; Basheer, PAM; Nanukuttan, S; Bai, Y; (2016) Influence of chloride ions on progress of carbonation in concretes. In: Proceedings of the International Workshop on Innovation in Low-carbon Cement & Concrete Technology. (pp. pp. 115-122). : London, UK. Green open access

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Abstract

Our infrastructure and environment face unprecedented challenges in addressing a low carbon future with limited natural resources, expanding population, increased pollution and climatic uncertainties. Adaptation and innovations must therefore play a vital role in addressing the anticipated wide ranging complex scenarios ahead. The environment in which construction materials will need to function will become far more complex and aggressive and hence a fundamental revaluation of the most appropriate materials for future infrastructure and environment will be required in order to tackle those challenges. This paper focuses on a class of construction materials, both old and new, based on magnesia (MgO). They include a wide range of materials from those that contain MgO as a small additive to those which solely consist of MgO. They include concrete with MgO as an expansive additive, pervious concrete, alkali-activated cements, magnesium phosphate cements, carbonated products, stabilising additives for ground improvement, self-healing additives, carbon capture and storage materials and binders for waste 105 and contaminated land remediation. Those materials and products offer a range of technical and sustainability benefits for a range of structural, geotechnical and environmental applications. The paper highlights the applications and benefits that would be achieved with magnesia-bearing construction materials.

Type: Proceedings paper
Title: Influence of chloride ions on progress of carbonation in concretes
Event: International Workshop on Innovation in Low-carbon Cement & Concrete Technology - 2016
Location: London, UK
Dates: 21 September 2016 - 24 September 2016
Open access status: An open access version is available from UCL Discovery
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: alkalinity, carbonation, chloride, combined mechanism, permeation properties
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1523330
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