Report No. : GEO Report No. 209

Report Title : Causes and Mechanisms of Distress in Concrete Seawall Blocks at Tsang Tsui Ash Lagoons (2007), 116 p.

Author : R.J. Sewell, K.C. Ho, C.L. Leung & K.Y. Leung


This report describes the results of a detailed study of distress in concrete seawall blocks at Tsang Tsui Ash Lagoon, Deep Bay, Hong Kong. The seawall blocks belonged to a set of field trials conducted by China Light and Power Company Limited (CLP) on the use of pulverized fuel ash (PFA) for the production of concrete. The study comprised two main parts: a petrographic examination of distressed seawall blocks to investigate potential alkali reactive materials, and a related study which examined the development of cracking and extent of deformation of the distressed seawall blocks.

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