Dr Judith Halliday

Dr Halliday has been working as a Research Fellow within the Concrete Technology Unit since 2001. She is a graduate of Civil Engineering at the University of Dundee (1997) and completed her PhD in 2002. Her PhD research investigated the potential use of waste from thermal processes, namely, cement kiln dust (CKD), incinerator fly as (IFA) and sewage sludge ash (SSA), as a cement constituent and focused on characterisation of materials, chemical hydration when used in ternary blends, strength development in mortar and determining the environmental impact.

Since working as a Research Fellow, she has been involved in numerous projects, including;

• Value added recycling of incinerator ashes (2002)
• Role of En 450 fly ash, BS 3892 (Part 2) and conditioned PFA in minimising the risk of damaging ASR (2003).
• Demonstration project using conditioned PFA as a cement component in concrete (2004).
• UK survey of dioxins and furans in construction materials/products (2005).
• Resolving application issues when using sewage sludge ash (SSA) as a concrete component (2006).
• Innovative cement combinations for concrete performance (ongoing).
• Facilitating the wider use of coarse and fine RA from washing plants (ongoing).
• Develop the sorting and processing of construction and demolition wastes and create methods for use of recycled aggregates in a range of higher value applications (ongoing).

Apart from research, she is also interested in the organisation of continuing professional development (CPD) events held by the Concrete Technology Unit since 1999. She has been heavily involved in several events, ranging from 5-day International Conferences (500 delegates from over 30 countries) to one day seminars (designed for a specific target audience).

Judith's current teaching is:-

1. Dyer, T D, Dhir, R K and Halliday, J E.Influence of Solid Solutions on Chloride Leaching from Wasteforms. Proceedings of Institution of Civil Engineers, WARM, 159, Issue WR3, pp 131-139, August 2006.
2. McCarthy, M J, Dhir, R K, Halliday, J E and Wibowo, A. Role of PFA quality and conditioning in minimising alkal-silica reaction in concrete. Magazine of Concrete Research, Vol 58, No 1, pp 49-61, 2006.