A New Method for Real-Time Monitoring of Grout Spread Through Fractured Rocks
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A New Method for Real-Time Monitoring of Grout Spread Through Fractured Rocks Alasdair E. Henderson1, Iain A. Robertson1, John M Whitfield2, Graham F.G. Garrard3, Nicholas G. Swannell3, Hansruedi Fisch4 1 Ritchies Division of Edmund Nuttall Ltd, Glasgow Road, Kilsyth, Glasgow G65 9BL, U.K. 2 UKAEA Dounreay Division, Dounreay, Thurso, Caithness KW14 7TZ, U.K. 3 Halcrow Group, Burderop Park, Swindon, Wiltshire SN4 0QD, U.K. 4 Solexperts AG, Mettlenbachstr. 25, Postfach 122, CH-8617 Mönchaltorf, Switzerland. ABSTRACT Reducing water ingress into the Shaft at Dounreay is essential for the success of future intermediate level waste (ILW) recovery using the dry retrieval method. The reduction is being realised by forming an engineered barrier of ultrafine cementitious grout injected into the fractured rock surrounding the Shaft. Grout penetration of 6m in
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