SIST EN 15466-1:2024

Overview

SIST EN 15466-1:2024 is a European standard developed by CEN that defines the method for determining the homogeneity of primers used with cold and hot applied joint sealants. As an updated replacement for the previous 2010 edition, this standard establishes clear criteria and test procedures to assess whether primer products exhibit uniform consistency without phase separation, floating particles, or deposited solids.

By providing standardized guidance on evaluating primer homogeneity, SIST EN 15466-1:2024 ensures reliable primer performance, which is critical for effective sealing and durability of joints in road construction and other civil engineering applications.

Key Topics

• Scope and purpose: Specifies the procedure to verify whether primers for joint sealants maintain consistent composition after delivery and upon application.
• Test conditions: Conditioning primers at (23 ± 2) °C for 24 hours before testing; conducting assessments in ambient (23 ± 5) °C.
• Visual inspection: Evaluating primer color, gleam, and presence of visible particles both in the container and after homogenization.
• Settling behavior: Using a prescribed rod to scrape the container bottom to detect deposited solids.
• Homogenization method: Shaking or stirring the primer, followed by resting in a 500 ml glass measuring cylinder and re-assessment for phase separation and floating particles after 60 minutes.
• Criteria for homogeneity: The primer is homogeneous if no phase separation, floating particles, or deposited solids are detected after homogenization.
• Test reporting: Detailed records including product identification, test conditions, and results on color, gleam, and homogeneity status.

Applications

This standard is essential for manufacturers, quality control laboratories, and specification engineers working with primers for:

• Road construction and maintenance: Ensuring primers used with sealing materials in joints provide optimal adhesion and durability.
• Infrastructure projects: Applying joint sealants in bridges, tunnels, and pavements where joint integrity is critical.
• Primer product development and certification: Guiding formulation improvements and compliance with European regulations.
• Quality assurance in supply chains: Verifying batch consistency and stability of primers before deployment on-site.
• Research and testing facilities: Implementing standardized methods to evaluate performance characteristics of sealing primers.

Related Standards

SIST EN 15466-1:2024 is part of a comprehensive series of standards addressing primers for joint sealants:

• EN 15466-2: Determination of resistance against alkali - critical to assess primer durability in alkaline environments.
• EN 15466-3: Determination of solids content and evaporation behavior of volatiles - important for application properties and curing performance.
• EN 14188-4: Specifications for primers to be used with joint sealants - defines primer types and baseline requirements referenced by EN 15466-1.

Together, these documents support thorough testing, classification, and use of primers enhancing reliability and longevity of joint sealing systems across Europe and internationally.

Keywords: SIST EN 15466-1:2024, primer homogeneity, joint sealants, cold applied primers, hot applied primers, sealing materials, road construction materials, CEN standards, primer testing method, phase separation, deposited solids, homogenization procedure, quality assurance, European standard for primers.