Aggregates for concreteBS EN 12620: 2013 Aggregates for concrete BS EN 12620: 2013 specifies the properties of aggregates and filler aggregates obtained by processing natural, manufactured or recycled materials and mixtures of these aggregates for use in concrete in conformity with BS EN 206 1 and concrete used in roads and other pavements and for use in precast concrete products. It covers aggregates having an oven dried particle density greater than 2,0 Mg m3 (2000 Kg

serviceability

transient overvoltages

Guidance on World Wide Web user interfaces

quantitative quality score expression

5 Self-test capabilities and failure indication

BS EN ISO 14155-1 specifies the requirements for:

Preparation of test sample

5 Requirements for hardened concrete

others might involve remounting the specimen or changing it

The methods are intended to measure the ability of rubbers of hardness within the range 10 IRHD to 95 IRHD to retain their elastic properties at specified temperatures after prolonged compression at constant strain (normally ) under one of the alternative sets of conditions described

Determination of nitric and ammoniacal nitrogen according to Ulsch

- fire detection and fire alarm systems