The Structural Engineer > Archive > Volume 55 (1977) > Issues > Issue 12 > The Use of Lightweight Aggregates for Structural Concrete
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The Use of Lightweight Aggregates for Structural Concrete

There are environmental, technical and commercial reasons why the increased use of lightweight aggregate for concrete should be encouraged in this country. In this paper, arguments in favour of and factors acting against the more general use of the material are examined and it is suggested that a major stumbling block is confusion between straight forward lightweight aggregate concrete suitable for most normal construction and the more exotic materials requiredfor highly specialised applications. The author proposes a new category of lightweight concrete for those mixes that behave like normal dense concrete and argues that they should be exempt from the special restrictions imposed by current Codes of Practice on reinforced lightweight concrete. Examples of the use of both types of lightweight concrete are given together with summaries of cost studies and cost evaluations. M.E.R. Little

Author(s): Little, M E R

Keywords: lightweight concrete;aggregates;materials;case studies;costs