Specification Of Concrete Mixes

There are five methods for specifying concrete described in BS 8500-1:2002. All should conform to the standards BS 8500-1: 2002 and BS EN 206-1: 2000. The five methods are:

• designated concrete

• designed concrete

• prescribed concrete

• standardised prescribed concrete

• proprietary concrete.

If the application can be considered to be routine, then designated concrete is usually appropriate. If, however, the purchaser requires specific performance criteria and accepts the higher level of responsibility in the specification, then designed or prescribed concretes may be used. For housing and similar applications, standardised prescribed mixes should give the required performance, providing that there is sufficient control over the production and quality of materials used.

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