Digest 276 Hardcore (Withdrawn)
Publication Year
1992
Document Status
Withdrawn, cited in regs
Abstract
The principal uses of hardcore are as a make-up material to provide a level base on which to cast a ground floor slab, to raise levels, and to provide a dry, firm base on which work can proceed or to carry construction traffic. A variety of materials have been used satisfactorily but difficulties can occur and there are a number of factors that need to be taken into account in the selection of materials for use as hardcore. Ideally, they should be granular and drain and consolidate readily; they should be chemically inert and not affected by water. However, few of the materials available at reasonable cost satisfy these requirements completely. The main hazards to be avoided are chemical attack by hardcore materials on concrete and brickwork mortar, settlement due to poor compaction and swelling or consolidation due to changes in moisture content or chemical instability. This Digest discusses some problems related to the use of hardcore and considers the suitability of some materials in common use.
Document History
Replaced by BRE Digest 522 - Parts 1 and 2.
ISBN
9780851253169
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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BRE
UK
