ISO 15643:2020

Overview

ISO 15643:2020 defines terminology and the required content of commercial literature for bituminous binder sprayers and synchronous bituminous binder sprayers–chip spreaders (synchronised combined units). The standard covers both cold and hot bituminous binder sprayers and specifies the components and technical characteristics that manufacturers, specifiers and purchasers should document in product literature.

Key components covered include the transport vehicle, binder tank, binder transfer device (pumps or pressurisation), spray bar, and control station. The standard also sets out commercial specification items for the spraying part and the spreading part of synchronised combined units, including tanks, burners, pumps, spray bars, chip hoppers and automatic control equipment.

Key Topics and Technical Requirements

• Terminology: Harmonised definitions for terms such as bituminous binder sprayer, synchronised combined unit, displacement pump sprayer, constant pressure sprayer, heat‑insulated sprayer, directly/indirectly heated sprayer, hot vs cold sprayer.
• Component descriptions: Required descriptions for the transport vehicle, tank geometry (circular, elliptical, prismatic), wash partitions, inspection and cleaning ports, level indicators and access equipment.
• Heating & insulation: Specification of heating methods (direct flame, electrical, indirect thermal oil) and types/thicknesses of thermal insulation for hot binder applications.
• Binder transfer systems: Requirements and definitions for displacement pumps (pump output proportional to speed) and constant pressure systems.
• Spray bar characteristics: Spray bar width, nozzle arrangement, spraying height and uniform distribution criteria that affect the nominal application rate (standard defines the nominal rate at a reference pump output and vehicle speed).
• Control systems: Manual vs automatic control station requirements, measuring instruments, positioning and automatic measuring/control equipment to ensure accurate binder application.
• Commercial specification items: Vehicle characteristics (masses, dimensions, axle loads, engine power), tank capacity and working pressure, pump maximum output, burner and chip spreader performance.

Practical Applications and Who Should Use This Standard

ISO 15643:2020 is valuable for:

• Manufacturers preparing product data sheets and commercial literature for bituminous binder sprayers and combined units.
• Road contractors and paving companies evaluating equipment performance and compatibility for surface treatments (e.g., tack coats, surface dressing).
• Procurement and spec writers drafting technical specifications and bid documents that require standardised equipment descriptions.
• Fleet managers and maintenance teams assessing tank, heating and pump options for operational needs (hot vs cold spraying).
• Regulatory bodies and testing labs verifying conformity of commercial literature and machine capabilities.

Related Standards

• ISO 15644 - Road construction and maintenance equipment - Chippings spreaders - Terminology and commercial specifications (normative reference used by ISO 15643).
• ISO/IEC Directives are referenced for editorial and procedural context.

Keywords: ISO 15643:2020, bituminous binder sprayers, synchronised combined unit, chip spreader, spray bar, binder tank, road construction equipment, commercial specifications.