EN 12614:2004

Products and systems for the protection and repair of concrete structures - Test methods - Determination of glass transition temperatures of polymers

This test method covers determination of glass transition temperature of polymers by differential thermal analysis or differantial scanning calorimetry. This test method is applicable to polymers in granular form (below 60 mesh, avoiding grinding if possible) or to any fabricated shape from which appropriatesamples can be cut. This test method is useful for specification acceptance. This test method determines the behaviour of a polymer according to the variations of temperatures.

Produkte und Systeme für den Schutz und die Instandsetzung von Betontragwerken - Prüfverfahren - Bestimmung der Glasübergangstemperatur von Polymeren

Produits et systèmes pour la protection et la réparation des structures en béton - Méthodes d'essais - Détermination de la température de transition vitreuse des polymères

Proizvodi in sistemi za zaščito in popravilo betonskih konstrukcij – Preskusne metode – Določevanje temperature prehoda za steklasto stanje polimerov

General Information

• Status: Published
• Publication Date: 05-Oct-2004
• ICS: 91.080.40 - Concrete structures
• Technical Committee: CEN/TC 104 - Concrete ( performance, production, placing and compliance criteria )
• Drafting Committee: CEN/TC 104/SC 8/WG 4 - Injection products
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 18-Jun-2021
• Completion Date: 14-Apr-2025
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Ref Project: SIST EN 12614:2004 - Products and systems for the protection and repair of concrete structures - Test methods - Determination of glass transition temperatures of polymers

Overview

EN 12614:2004 is a CEN test method for determining the glass transition temperature (GTT) of polymers used in products and systems for the protection and repair of concrete structures. The standard specifies how to measure GTT by differential scanning calorimetry (DSC) or differential thermal analysis (DTA) for polymers supplied as granules (below 60 mesh / < 250 µm) or from fabricated shapes that can be cut into representative samples. The method is intended for specification acceptance and for characterizing polymer behavior as temperature varies.

Key topics and technical requirements

• Test techniques: DSC (power‑compensation or heat‑flux) and DTA with continuous recording of heat flow or temperature difference against temperature/time.
• Apparatus: equipment capable of heating/cooling at up to (10 ± 1) K/min; sample pans (aluminium or borosilicate if aggressive); thermocouples/probes; inert gas supply with flow control.
• Sample preparation: use homogeneous, representative samples; avoid grinding unless required and preceded by appropriate thermal cycles; typical sample weights: 10–20 mg (DSC) and 10–100 mg (DTA).
• Thermal cycles:
  • Preliminary cycle: heat under nitrogen to erase thermal history (typically ~10 K/min), minimizing high‑temperature exposure to avoid decomposition.
  • Quench cooling: to about 50 K below the transition and hold 10 min.
  • Test cycle: repeat heating at ~10 K/min and record transitions.
• Calibration: calibrate temperature scale with suitable reference materials covering the temperature range (examples include n‑heptane, n‑octane, water, benzoic acid, indium, tin, zinc).
• Data and definitions: determine Tf (extrapolated onset), Te (extrapolated end), Tm (midpoint) and assign Tg (Tm by definition; Tf is often more meaningful in practice).
• Performance: within‑lab repeatability ≈ ±2.5 K; inter‑lab reproducibility ≈ ±4 K.
• Reporting: full identification of material and test conditions, sample holder, sample weight, calibration, atmosphere (gas flow, purity), measured temperatures and the DTA/DSC curve.

Applications and users

• Who uses it: testing laboratories, manufacturers of polymer-based concrete repair materials (injection resins, coatings, adhesives), quality control teams, materials scientists and specifiers.
• Practical uses:
  • Acceptance testing for polymeric repair products.
  • Characterizing thermal transitions that affect service temperature, curing and mechanical performance.
  • Supporting material selection and formulation optimization for concrete protection and repair systems.

Related standards

• Other CEN documents on concrete repair and polymer product requirements (for example the EN 1504 series and standards produced by CEN/TC 104) are typically consulted alongside EN 12614:2004 for product specification and system performance.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.PHURYProdukte und Systeme für den Schutz und die Instandsetzung von Betontragwerken - Prüfverfahren - Bestimmung der Glasübergangstemperatur von PolymerenProduits et systemes pour la protection et la réparation des structures en béton - Méthodes d'essais - Détermination de la température de transition vitreuse des polymeresProducts and systems for the protection and repair of concrete structures - Test methods - Determination of glass transition temperatures of polymers91.080.40Betonske konstrukcijeConcrete structuresICS:Ta slovenski standard je istoveten z:EN 12614:2004SIST EN 12614:2004en01-december-2004SIST EN 12614:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12614October 2004ICS 91.080.40 English versionProducts and systems for the protection and repair of concretestructures - Test methods - Determination of glass transitiontemperatures of polymersProduits et systèmes pour la protection et la réparation desstructures en béton - Méthodes d'essai - Détermination dela température de transition vitreuseProdukte und Systeme für den Schutz und dieInstandsetzung von Betontragwerken - Prüfverfahren -Bestimmung der Glasübergangstemperatur von PolymerenThis European Standard was approved by CEN on 27 February 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12614:2004: ESIST EN 12614:2004

2 Contents page Foreword.3 1 Scope.4 2 Terms and definitions.4 3 Test principle.4 4 General requirements for testing.5 4.1 Apparatus.5 4.2 Calibration of the temperature scale of the apparatus.5 5 Preparation of sample.6 5.1 General.6 5.2 Powdered or granular sample.6 5.3 Moulded or pelleted samples.6 5.4 Film or sheet samples.6 6 Test procedure.6 7 Test report.9
4 1 Scope This document covers a test method for the determination of glass transition temperature (GTT) of polymers by differential scanning calorimetry (DSC) or differential thermal analysis (DTA). This test method is applicable to polymers in granular form (below 60 mesh, < 250 µ, avoiding grinding if possible) or to any fabricated shape from which appropriate samples can be cut. This test method is useful for specification acceptance. This test method determines the structural behaviour of a polymer according to the variations of temperatures. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 differential scanning calorimetry (DSC) differential scanning calorimetry can be carried out according to two principles, depending on the method of measurement used Power compensation differential scanning calorimetry records in function of time or temperature the required power to maintain a zero temperature difference between the polymer and an inert reference, when they are subjected to a controlled temperature program (Power-compensation DSC). Heat-flux differential scanning calorimetry records in function of time or temperature the difference of heat-flux diffusing between the sample holder, the reference holder and the testing unit of the equipment (Heat-flux DSC). For the two principles, the recording chart gives a DSC curve with, at the Y-axis, the heat flow and, at the X-axis, the temperature or time. 2.2 differential thermal analysis (DTA) differential thermal analysis records the temperature difference between the polymer sample and an inert reference, while they are subjected to a controlled temperature program The recording chart gives a DTA curve with, at the Y-axis, the temperature difference between the sample and the reference and, at the X-axis, the temperature or time. 3 Test principle The test method consists of heating or cooling the sample at a controlled rate in a controlled atmosphere. A suitable sensing device monitors continuously:  te
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