Digest 392 Assessment of existing high alumina cement concrete construction in the UK
Publication Year
1994
Document Status
Withdrawn
Abstract
After a few collapses in the early 1970s, reference to high alumina cement concrete (HACC) was deleted from the code of practice for the structural use of concrete. This Digest explains current guidance for the assessment of HAC construction, taking account of developments and research since 1975. Most of the new information comes from site investigations of structures; the finding have a bearing on how HAC construction should be appraised. The main conclusions are that, in the absence of chemical attack, the strength assessment guidance issued in 1975 by the Department of the Environment has been shown to be safe without being over pessimistic but that the risk of corrosion to reinforcement is increasingly important in the assessment of HAC components. This Digest describes a testing regime to identify cases of chemical attack and assesses the current level of protection afforded to the reinforcement.
ISBN
9780851256252
Publisher Information
BRE
BRE is a building science centre that generates new knowledge through research. This is used to create products, tools and standards that drive positive change across the built environment. BRE helps its government and private sector clients meet the significant environmental, social and economic challenges they face in delivering homes, buildings and communities. BRE is owned by the BRE Trust, a registered charity. The Trust uses the profits made by the BRE companies to fund research and education that advances knowledge of the built environment.
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