ISO 22965-2:2007

Overview

ISO 22965-2:2007 - Concrete - Part 2: Specification of constituent materials, production of concrete and compliance of concrete - defines requirements and a compliance framework for concrete used in buildings and civil engineering. It applies to in situ cast, pre-cast and structural pre-cast products produced on site, as ready-mixed concrete, or in production plants. The standard focuses on the properties of constituent materials, production control, testing and compliance systems for normal-weight, heavy-weight and light-weight concrete compacted to retain no appreciable entrapped air.

Key exclusions: mortar (maximum aggregate ≤ 4–5 mm), aerated or foamed concrete, “no-fine aggregate” (open-structure) concrete, concrete with density < 800 kg/m3, and refractory concrete. Health and safety for workers during production/delivery are outside its scope.

Key Topics and Requirements

ISO 22965-2:2007 addresses practical technical areas that ensure consistent, compliant concrete production:

• Constituent materials: specification and requirements for cements, additions, aggregates, mixing water and admixtures.
• Concrete composition: rules for composition control and establishing concrete families (grouped compositions with documented property relationships).
• Fresh concrete properties: sampling, testing and acceptance criteria for workability/consistence and other fresh-state properties.
• Hardened concrete properties: compressive strength testing procedures and requirements for evaluation.
• Production control: systems, surveillance, testing regimes, and initial tests to verify new concrete compositions.
• Delivery and documentation: requirements for delivery tickets (ready-mixed) and transport/handling information for site-mixed concrete.
• Compliance control: sampling and testing plans, individual-batch compliance, assessment over defined periods, and criteria for conformity.
• Assessment and certification: provisions for assessment, surveillance and certification of production control (including annexed guidance).

The standard also provides informative annexes on production-control benchmarks, concrete families, high-strength concrete guidance, and k-value use for additions.

Applications and Who Uses It

ISO 22965-2 is intended for:

• Concrete producers (ready-mix plants, precast factories)
• Contractors and concreting subcontractors
• Designers and specifiers preparing concrete specifications
• Quality managers implementing production-control and compliance systems
• Project teams that need a recognized framework when no national standard exists

Practical uses include establishing mix design control, preparing sampling/testing plans, managing delivery documentation, and demonstrating compliance for structural concrete projects.

Related Standards

• ISO 22965-1:2007 - Methods of specifying and guidance for the specifier (companion document)
• Future ISO 22966 - Execution requirements (in development)
• Referenced test standards (e.g., ISO 1920 series for sampling and testing)

Keywords: ISO 22965-2:2007, concrete specification, constituent materials, production control, compliance of concrete, ready-mixed concrete, pre-cast concrete, concrete testing.