TS EN 14487-1

TS EN 14487-1 is the part of the sprayed concrete standard that defines the terminology, technical requirements and conformity principles for this material. It provides a common technical framework for sprayed concrete used in repair and upgrading of structures, in new construction and in ground strengthening, including how the material is classified and how compliance is assessed.

Where this standard applies in practice

The standard applies to both wet-mix and dry-mix sprayed concrete. Its scope covers classification related to wet-mix consistence, environmental exposure classes, constituent materials, the basic mix, fresh and hardened concrete, and all types of fibre reinforced sprayed concrete. It also addresses the requirements for designed and prescribed mixes, together with conformity.

In general technical terms, sprayed concrete is concrete applied by projection at pressure onto a surface rather than placed conventionally in formwork. That makes it especially useful where access is difficult, where a surface needs a strengthening layer, or where rock, soil, concrete, masonry, steel, drainage materials or insulating materials must receive a bonded concrete layer. Applications outside the document’s intended field may need additional or different requirements, for example refractory uses.

Why the material categories matter

• Wet-mix consistence classification helps describe pumping and spraying behaviour.
• Exposure classes distinguish service conditions that affect durability design.
• Requirements for constituent materials and the basic mix support consistent production across different spray processes.
• Designed and prescribed mix provisions separate performance-based and recipe-based approaches.
• Fibre reinforced sprayed concrete may be specified for properties such as crack control and toughness.