BS 8500:2019 Concrete - Complementary British Standard to BS EN 206
BS 8500 describes ways of specifying concrete and gives specifiers guidance.
It specifies requirements for: the constituents of concrete, the properties of fresh and hardened concrete and their verification, the limitations for concrete composition, the specification of concrete, the delivery of fresh concrete, the production control procedures and the conformity criteria and evaluation of conformity.
Annex A provides guidance on the concrete quality to be specified for selected exposure classes, intended working life and nominal cover to normal reinforcement.
BS 8500-1 complements BS EN 206. It provides UK national provisions where required or permitted by BS EN 206. It also covers materials, methods of testing and procedures that are outside the scope of BS EN 206, but within national experience.
BS 8500-2 covers the latest options and testing procedures for constituent materials and concrete. It specifies a number of basic requirements for concrete and its constituent materials, and gives specific requirements relating to the types of concrete listed in BS 8500-1.
It specifies requirements for: the constituents of concrete, the properties of fresh and hardened concrete and their verification, the limitations for concrete composition, the specification of concrete, the delivery of fresh concrete, the production control procedures and the conformity criteria and evaluation of conformity.
The standard complements BS EN 206 by providing national provisions where required or permitted by BS EN 206. The requirements are given for defined materials with an established or accepted adequate performance in UK conditions. It also covers materials, methods of testing and procedures that are outside the scope of BS EN 206, but within national experience.
This amendment is predominantly concerned with increasing the range of cementitious materials covered. These now include: natural pozzolana, natural calcined pozzolana or high reactivity natural calcined pozzolana as an addition, Portland‐pozzolana and pozzolanic cements, as well as a range of ternary cements which include up to 20% limestone fines.
As well, the option to use durability modelling or an equivalent durability procedure is clarified and minor editorial changes have been made, such as the change of nomenclature from N/mm2 to MPa for stress.
