ISO 15689:2003

Overview

ISO 15689:2003 defines terminology, functions, types and commercial specifications for powder binder spreaders used in road construction and maintenance. The standard covers machine components, operation principles and the parameters required to specify and evaluate powder binder spreaders - mobile machines intended for stabilization, treatment or retreating of pavement materials and soils (earthworks, subgrade, road foundations). Key keywords: ISO 15689, powder binder spreaders, road construction, maintenance equipment, proportioner.

Key topics and technical requirements

The standard organizes requirements and definitions around three main design criteria:

• Types and propulsion
  • Transported, self‑propelled, and towed spreaders.
• Transfer methods from tank to ground
  • Gravity (with or without fluidification), mechanical (delivery conveyor, screw feeder, spreading device), pneumatic, or combinations.
• Proportioner types
  • Proportioning by volume (e.g., rotary vane feeder or delivery conveyor), proportioning by mass, or other proportioning systems.

Commercial specification requirements listed include:

• Main assemblies: engine and power transmission, chassis, axles, powder tank, conditioning hopper, delivery conveyor, screw feeder, spreading device, compressor/pneumatic duct, rotary vane feeder, skirts, operator’s station.
• Measuring & control equipment: cab output control, tank level/full/empty indicators, devices to measure quantity spread (by mass or volume), surface area calculator, average proportion calculator, automatic spread controller, recording/display/alarm systems.
• Optional devices: anti‑dust systems, water spray for dust suppression, special spreading width devices, warning beacons/headlights.
• Performance and dimensional characteristics to be specified: overall and shipping dimensions, masses (unloaded, loaded, shipping), axle loads, ground contact pressure (for crawlers), engine and transmission data, steering, tyre/track specifications, tank capacity, spreading width and output ranges, rotary vane feeder swept volume, gradients and stability limits.

Applications and practical value

ISO 15689 is practical for:

• Stabilization and treatment of road layers and soils
• Applying powdered binders (lime, cementitious products, other powders) during construction, rehabilitation and maintenance
• Specifying machine capabilities for procurement, tender documents and equipment comparison
• Guiding manufacturers on terminology and commercial data presentation

Who uses this standard

• Equipment manufacturers and designers
• Road authorities, contractors and project specification writers
• Fleet managers and procurement officers
• Engineers responsible for pavement stabilization, earthworks and maintenance

Related standards

• ISO 3911 (Wheels and rims for pneumatic tyres - vocabulary, designation and marking) is cited as a normative reference in ISO 15689:2003.

ISO 15689:2003 helps standardize specification, selection and operation of powder binder spreaders, improving procurement clarity, operational control and interoperability across road construction and maintenance projects.