Overview
ISO 21592:2006 defines terminology and commercial literature specifications for concrete spraying machines - equipment used to spray cement-concrete and polymer/epoxy concrete mixes onto surfaces (commonly known in the industry as shotcrete). The standard covers machine types, operating principles, classification criteria, key components and the commercial data manufacturers and purchasers should present. Annex A provides illustrative figures showing typical machine types, structures and dimensional characteristics.
Key topics
- Terminology and definitions
- Precise terms for machine types: wet mixture sprayer, dry mixture sprayer, wet-and-dry sprayer, rotor type, concrete pump type, impeller type, etc.
- Definitions for components such as spraying boom, sprayer carrier, cleaning device, cable reel, and quick‑setting admixture.
- Classification criteria
- By spraying process (wet / dry / wet-and-dry), principle of operation (rotor, pump), control method (hand or boom‑mounted), carrier type (wheeled, tracked, skid, manual) and prime mover (electric, spark-ignition, compression-ignition, hybrid).
- Commercial specifications to be supplied
- Basic sprayer characteristics: model, manufacturer, application, spraying capacity (m³/h), maximum aggregate size, slump, spraying reach, maximum conveyance distance (wet/dry), installed power, electrical supply, overall dimensions and operating mass.
- Component-specific data: hopper capacity and height, hose diameter, air compressor output and pressure, concrete cylinder dimensions (for pump types), hydraulic/power unit details, boom geometry and nozzle sizes, cleaning device output and pressure.
- Illustrative annex
- Annex A shows example processes and dimensional sketches for common machine configurations to aid interpretation.
Applications and users
ISO 21592 is practical for:
- Manufacturers preparing technical and commercial literature for concrete spraying machines.
- Procurement teams / specifiers writing equipment specifications for tunnel lining, underground works, slope stabilization, tank repair, concrete repair and other shotcrete applications.
- Construction and tunnelling engineers selecting appropriate wet or dry sprayers and sizing hoses, compressors and booms.
- Site managers, maintenance and safety personnel using standardized terminology to manage operations, cleaning and component replacements.
- Certification bodies and inspectors evaluating compliance with published commercial data.
Related standards
- Prepared by ISO/TC 195 (Building construction machinery and equipment), Subcommittee SC 1 (Machinery and equipment for concrete work). For full conformity and integration, users should consider other ISO standards and national regulations related to construction machinery, electrical supply and emissions when specifying or operating concrete spraying equipment.
Keywords: ISO 21592, concrete spraying machines, shotcrete, rotor type sprayer, concrete pump sprayer, wet spraying, dry spraying, spraying boom, commercial specifications.