John Potts, Daryl Brigden, Mehdi Afshar
The Burdekin Falls Dam Raising and Improvement Project involves the stabilisation of the existing concrete gravity dam by downstream buttressing. The critical requirement is that the composite structure remains homogeneous, without cracking at the buttress interface, over the life of the structure. Another concern is control of cracking due to shrinkage and/or thermal stresses in the unreinforced buttressing concrete. Mass concrete mix trials were initiated in advance to provide data to be used in the upcoming detail design phase. Burdekin Falls Dam was the last large mass concrete gravity dam built in conventional vibrated concrete (CVC) in Australia before roller compacted concrete (RCC) technology took over. Not surprisingly there is currently a lack of understanding in the industry about the special requirements of CVC mix design. The paper is intended to address this information gap. The authors of the paper have worked extensively on CVC and RCC concrete dams in Australia and overseas.
$15.00
ANCOLD is an incorporated voluntary association of organisations and individual professionals with an interest in dams in Australia.
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