Exposing the concrete facts

Article Abstract:

Exposed concrete is fashionable in building design but architects lack information about about obtaining and maintaining high quality finishes. Most concrete is specified by structural engineers and an architect intending to use exposed concrete must make a detailed specification, emphasising the importance of appearance. Concrete mix ingredients affect its colour. Fines also can be used to add colour and can be colour conditioned. The finish of concrete is affected by the formwork and consideration should be given to the arrangement, grouting and sealing of joints.

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Making good

Article Abstract:

Concrete has to be made good if there are structural or visual defects. The specification for making good should cover removal of unnecessary concrete, preparation of a substrate, structural and visual repairs. The contractor should set out a methodology including satisfactory standards for personnel, methodology, mix design and schedule of works. Mix designs should be recorded and tested. Instructions for making good various types of dammage are given. All making good should be inspected before finishing.

Standards, Concrete construction

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Surface treatments

Article Abstract:

Surface finishes of concrete can be protected and enhanced by use of hardeners, sealers and colourings. Hardeners make the surface durable but change its appearance. Sealers protect the surface and appearance and may also protect against graffiti. The cost, appearcnce effects and maintenance need of hardeners and sealers should be assessed before one is chosen. The colour of the surface of concrete may be changed by chemical stains or colour wax.

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