时间：2014年11月7日（星期五）下午15:00

地点：材料科学与工程学院14号楼205

报告摘要：

Economic & societal relevance: Corrosion-related degradation adversely affects the reliability of civil structures. Materials’ degradation is a multi-billion issue worldwide; 50 – 60% of these costs in EU are corrosion-related, since most of the active infrastructure was built in the 1950s -1970s and designed to last for 50 (max 100) years. The overall corrosion cost for the Western industrial world is approx. 3.5% of the Gross National Product (GNP). For The Netherlands, the corrosion costs equal to 10 Eurocents per inhabitant per hour! At least 30% cost reduction is possible if all available knowledge and expertise is implemented in practice. This means that in The Netherlands about 5 billion Euro per year of corrosion-related cost is unnecessary!

Present approach (or lack thereof): Various protection methods and techniques are available and applied, e.g. protective coatings and sealers, cathodic protection (CP), concrete re-alkalization, corrosion inhibitors, along with novel solutions for better performing blended cements, corrosion-resistant steel, novel self-healing approaches, etc. Despite these possibilities, feasible solutions, including considerations for sustainability, or novel ones, originating from entirely different scientific backgrounds are not yet available. The reason is the commonly fragmented approach i.e. civil-engineering oriented only or corrosion-engineering oriented only. Hence, the applied methods and technology are restricted to either steel or to concrete. Therefore, the barrier to achieve durable and sustainable built environment and significantly reduced corrosion costs in the civil engineering sector is the absence of a simultaneous recognition of the involved materials. This is accompanied by the still lacking, thorough fundamental understanding of their interconnected behaviour, especially within the increasingly challenging bio- and climate-diversity.

Layout of this talk:
Since 90% of durability-related issues in civil structures are due to corrosion, the focus of our corrosion-related research is on the rarely met by researchers integration of core fields as corrosion, electrochemistry and concrete material science from nano(micro)-to engineering-level research and applications. For a better understanding of the significance of steel corrosion as main degradation challenge, impact and fundamental aspects will be discussed first. Next, main outcomes of recent and on-going research will be presented. Finally, some aspects of new research lines as well as possibilities and interest in collaborative projects and/or joint research will be outlined. Some of the main points to be discussed are as follows:
    - corrosion and corrosion impact
    - corrosion mechanisms - fundamental aspects - electrochemical kinetics & thermodynamics
    - corrosion types and protection techniques incl. cathodic protection
    - novel aspects - synergy of electrochemistry and concrete material science - illustration corrosion protection through wastes and nano-materials

报告人简介：

Dr. DessiKoleva is Assistant Professor in Section Materials and Environment (M&E),Faculty of Civil Engineering and Geosciences (CiTG), TU Delft. She received her Ph.D. degree in TU Delft under thesupervision of Prof.dr.ir. Klaas van Breugel and Prof.dr. Hans de Wit in 2007. Her research interests include: corrosion and cathodic protection, concrete and reinforced concrete durability, nano-materials for corrosion control, electrodeposition, waste initialization for corrosion control, self-healing of cement-based materials and corrosion in reinforced concrete, and green solutions in civil engineering. In the recent 5 years, she published 2 book chapters (1 as first author; I as co-author), 22 journal papers (2 as sole author; 11 as first author; 9 as co-author) and more than 30 refereed proceedings papers. She is the active member of The Electrochemical Society (USA) and the International Society of Electrochemistry (invited), editorial board member of the Open Construction and Building Technology Journal, and expert-evaluator for European Commission-Directorate General for Research and Innovation. She is also the peer reviewer for many international scientific journals, including: ElectrochimiicaActa, Corrosion Science, Corrosion, Cement and Concrete Research, Cement and Concrete Composites and etc.