ABSTRACT
Radical Concrete Technology. Edited by R K Dhir and P C Hewlett. Published in 1996 by E & FN Spon, 2-6 Boundary Row, London SE1 8HN, UK. ISBN 0 419 21480 1. ABSTRACT. In order to develop field placeable very-high-strength concrete mixes for Hong Kong, a large number of trial concrete mixes have been cast and tested. Only locally available materials and conventional production and curing methods were used. For the sake of avoiding excessive heat of hydration and drying shrinkage, the binder paste volumes of the mixes were limited to not more than 35%. The mix parameters investigated include: aggregate type, binder paste volume, fine to total aggregates ratio, dosage of condensed silica fume, and combined usage of condensed silica fume and pulverized fuel ash etc. Based on the test results, several selected mixes which may be considered for the production of grade 90~100 concrete are recommended. Keywords: High-strength concrete, Aggregates, Condensed silica fume (CSF), Pulverized-fuel ash (PFA). Dr H C Chan is a Reader and the Head of Department of Civil and Structural Engineering, University of Hong Kong. His main research interests include concrete technology, reinforced concrete structures and computer aided design of structures. He has published many journal papers and chapters of books, and served on several technical committees for the local government and engineering institution. Dr Albert K H Kwan is a Senior Lecturer of Department of Civil and Structural Engineering, University of Hong Kong. He has worked for a number of years in the construction industry before returning to the academic circle. His research interests include concrete technology, tall building structures and earthquake engineering.
