Information Paper 7/87 Sea-dredged aggregates in concrete
Publication Year
1987
Document Status
Withdrawn
Abstract
Over 15% of the sand and gravel currently used in England and Wales is won from the sea-bed and has been used in a wide range of reinforced concrete structures. The main difference between the majority of land-based aggregates and marine aggregate lies in the presence in the latter of sea salts, which usually have to be washed out to meet British Standard maximum limits for chloride and latest guidelines for limited alkali content to prevent alkali silica reaction (ASR). In this paper the basic facts about marine aggregates are considered in relation to the requirements of BS 8110 Structural use of concrete, of the latest guidelines to prevent ASR, and of BS 882 which all aggregates from natural sources must pass to be acceptable for structural reinforced concrete. If these requirements are fulfilled then marine aggregates can be safely used.
Document History
Withdrawn October 2016.
Author
Gutt, W. and Collins, R. J.
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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