SIST EN 13687-4:2002

Overview

SIST EN 13687-4:2002 is an important European standard focused on verifying the durability and thermal compatibility of products and systems used for the protection and repair of concrete structures. Specifically, this standard describes the method for determining the performance of repair materials-grouts, mortars, concretes, and surface protection systems-when subjected to dry thermal cycling. This type of testing is crucial for ensuring that concrete repair products based on cementitious (CC), polymer-modified (PCC), and polymer (PC) binders, as well as surface protective coatings, remain effective under temperature extremes, without the influence of de-icing salts.

Key Topics

• Dry Thermal Cycling: The standard details procedures for exposing products to cycles of high and low temperatures (from -25°C to +55°C) in dry conditions, mimicking harsh outdoor environments.
• Performance Assessment: The focus is on observing physical effects such as cracking, scaling, peeling, and delamination of repair materials and protective coatings after repeated thermal cycles.
• Test Specimen Preparation: Standardizes requirements for preparing concrete specimens, the application of repair systems, and their curing and conditioning before testing.
• Results Evaluation: Specifies the need for visual inspections throughout the process and quantifies the bond strength using pull-off tests.
• Reporting: Outlines comprehensive requirements for documenting the testing process, results, and sample identification.

Applications

SIST EN 13687-4:2002 is particularly valuable for:

• Manufacturers of repair mortars, grouts, and protection systems, who need to demonstrate that their products meet recognized durability requirements.
• Quality control laboratories involved in the certification and performance assessment of concrete repair and protection materials, ensuring products can withstand cyclical temperature variations.
• Structural engineers and specifiers selecting suitable repair systems for bridges, tunnels, parking decks, façades, and exposed surfaces, where temperature fluctuations are common.
• Certification and compliance bodies that reference this standard when approving systems for use in construction and civil engineering works.

Adhering to these test methods helps prevent premature failure of repair systems, ensuring long-term performance in climates with substantial temperature swings but without significant chemical de-icing agents.

Related Standards

SIST EN 13687-4:2002 is part of a broader series addressing diverse aspects of thermal compatibility for the repair and protection of concrete:

• EN 13687-1: Freeze-thaw cycling with de-icing salt immersion
• EN 13687-2: Thunder-shower cycling (thermal shock)
• EN 13687-3: Thermal cycling without de-icing salt impact
• EN 13687-5: Resistance to temperature shock

Other standards referenced within include:

• EN 1504-1: Definitions and quality control for concrete protection and repair products
• EN 1542: Measurement of bond strength by pull-off method
• EN 1766: Reference concretes for testing
• EN 196-1: Determination of strength for cement test methods

Practical Value

By following SIST EN 13687-4:2002, stakeholders can ensure that concrete repair materials remain reliable and effective even when exposed to dry, cyclic temperature extremes-mitigating the risk of structural failures and minimizing maintenance costs over time. Applying this standardized testing method strengthens quality assurance, product development, and regulatory compliance within the construction and civil infrastructure sectors.

Keywords: concrete repair, protection systems, thermal compatibility, dry thermal cycling, durability testing, EN 13687-4, concrete standards, bond strength, surface protection, temperature cycling, repair mortars.