Details of Grant 

EPSRC Reference:	GR/L29200/01
Title:	COMBINED MICROSTRUCTURAL AND MICRO-CELL STUDIES ON STEEL BLAST-FURNACE SLAG CEMENT COMPOSITES
Principal Investigator:	Macphee, Professor D
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department:	Chemistry
Organisation:	University of Aberdeen
Scheme:	Overseas Travel Grants Pre-FEC
Starts:	05 August 1996	Ends:	04 September 1996	Value (£):	1,940
EPSRC Research Topic Classifications:	Materials Characterisation
EPSRC Industrial Sector Classifications:	Construction
Related Grants:
Panel History:
Summary on Grant Application Form
Blastfurnace slag (BFS), a product of iron making, is electrochemically reducing. When blended with Portland cements, the resulting paste pore water can have an Eh value of as low as -600 mV compared with the mildly oxidising conditions prevalent in normal Portland cement pastes. dc polarisation studies and supporting electron microscopic analysis have shown that this effect has a negative influence on the passivation mechanism operating for steel yet, despite this, BFS-containing concrete structures have good durability in aggressive media. The proposed short project aims to investigate this anomaly using ac impedance spectroscopy, interpretation of which will be partly based on a recently developed equivalent circuit model which correlated microstructural features with impedance data.
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Organisation Website:	http://www.abdn.ac.uk