oSIST prEN 480-15:2022

Admixtures for concrete, mortar and grout - Test methods - Part 15: Reference concrete and method for testing viscosity modifying admixtures

This document specifies the constituent materials, the composition and the mix procedure to produce a reference concrete with a prescribed consistency and segregated portion for testing viscosity modifying admixtures as defined in EN 934-2. It also describes how to determine the requirements for the test mix in comparison with the control mix.

Zusatzmittel für Beton, Mörtel und Einpressmörtel - Prüfverfahren - Teil 15: Referenzbeton und Prüfverfahren zur Prüfung von viskositätsmodifizierenden Zusatzmitteln

Dieses Dokument legt die Ausgangsstoffe, die Zusammensetzung und das Mischverfahren zur Herstellung von Referenzbeton von vorgeschriebener Konsistenz und Entmischung für die Prüfung von viskositätsmodifizierenden Zusatzmitteln nach der Definition in EN 934-2 fest. Es beschreibt auch, wie die Anforderungen an die Prüfmischung im Gegensatz zur Vergleichsmischung zu bestimmen sind.

Adjuvants pour béton, mortier et coulis - Méthodes d’essai - Partie 15 : Béton de référence et méthode d’essai des adjuvants modificateurs de viscosité

Le présent document spécifie les constituants, la composition et la méthode de malaxage utilisés pour produire un béton de référence ayant une consistance prescrite et un pourcentage de laitance destiné à la réalisation d’essais sur les adjuvants modificateurs de viscosité tels que décrits dans l’EN 934-2. Il décrit également la méthode de détermination des exigences relatives au béton adjuvanté par rapport au béton témoin.

Kemijski dodatki za beton, malto in injekcijsko maso - Metode preskušanja - 15. del: Referenčni beton in metode za preskušanje spreminjanja viskoznosti dodatkov

General Information

• Status: Not Published
• Public Enquiry End Date: 27-Feb-2022
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: BBB - Concrete, reinforced concrete and prestressed concrete
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 26-Dec-2021
• Due Date: 15-May-2022
• Completion Date: 01-Mar-2022
• 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: prEN 480-15 - Admixtures for concrete, mortar and grout - Part 15: Determination of corrosion current of steel in concrete by microcell electrochemical measurement

Relations

• Revised: SIST EN 480-15:2013 - Admixtures for concrete, mortar and grout - Test methods - Part 15: Reference concrete and method for testing viscosity modifying admixtures
• Effective Date: 18-Jan-2023
• Revised: SIST EN 480-15:2013 - Admixtures for concrete, mortar and grout - Test methods - Part 15: Reference concrete and method for testing viscosity modifying admixtures
• Effective Date: 17-Feb-2021

Overview

The European Standard oSIST prEN 480-15:2022:2021 defines methods for producing a reference concrete and testing the impact of viscosity modifying admixtures (VMAs) on concrete properties. Developed by CEN/TC 104, this standard ensures consistent evaluation of admixture performance by specifying the materials, mixing procedures, and testing requirements. It supersedes EN 480-15:2013 and aligns with EN 934-2 for admixtures, providing a harmonized approach to assessing concrete viscosity agents.

This standard is critical for the concrete industry, facilitating reliable quality control and comparative analysis of admixtures designed to modify concrete, mortar, and grout viscosity. It supports manufacturers, testing laboratories, and construction professionals in verifying admixture effectiveness under standardized conditions.

Key Topics

• Constituent Materials: Specifies the use of CEM I cement with strength classes 42.5 or 52.5 (EN 197-1), and natural normal-weight aggregates with defined grading and low water absorption (≤ 2% mass) according to EN 12620.
• Reference Concrete Composition: Details mix proportions including cement (400 ± 10 kg/m³), aggregate-to-cement ratios, water content (≤ 230 kg/m³), and superplasticizer dosages in line with EN 934-2.
• Mixing Procedure: Outlines controlled mixing steps with temperature conditioning (20 ± 2 °C), use of forced action pan mixers, and timing to ensure repeatability and minimize moisture variability effects.
• Testing Methods:
  • Slump flow (EN 12350-8) and sieve segregation (EN 12350-11) determine concrete consistency and segregation resistance.
  • Air content measurement (EN 12350-7) ensures low entrapped air (<2% volume).
  • Fresh concrete density evaluation (EN 12350-6) for quality control.
  • Compressive strength tests on specimens prepared following EN 12390-1 and EN 12390-2.
• Comparative Analysis: Test concrete with VMAs is compared against a control concrete mix without VMAs for consistency, segregation, air content, density, and strength.
• Reporting Requirements: Specifies detailed documentation of constituent sources, admixture dosages, mix parameters, and test results for transparency and traceability.

Applications

oSIST prEN 480-15:2022 provides practical value in:

• Admixture Development: Enables manufacturers to standardize the evaluation of viscosity modifying admixtures, facilitating product improvement and certification.
• Quality Control in Concrete Production: Testing laboratories and concrete suppliers use the standard to verify that VMAs perform as intended in reference mixes, assuring consistent workability and stability.
• Construction Practice: Guides contractors and engineers on reproducible testing of admixture-modified concrete, leading to improved placement and durability of concrete structures.
• Research and Innovation: Supports academic and industrial research by offering a uniform test platform for studying the effects of VMAs on concrete rheology and long-term performance.

Related Standards

oSIST prEN 480-15:2022 integrates closely with several other key standards in the concrete and admixture domain, including:

• EN 934-2: Definitions, requirements, and conformity criteria for concrete admixtures, including VMAs.
• EN 197-1: Specifications for common cements used in concrete production.
• EN 12620: Requirements for aggregates used in concrete.
• EN 12350 Series: Fresh concrete testing methods such as slump flow, air content, density, and segregation.
• EN 12390 Series: Testing hardened concrete properties, including specimen preparation and compressive strength.
• EN 480 (All Parts): Admixture test methods covering setting time, bleeding, capillary absorption, and corrosion impact.

By adhering to oSIST prEN 480-15:2022 and these complementary standards, stakeholders achieve harmonized testing approaches essential for quality and innovation in concrete admixtures globally.

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Keywords: oSIST prEN 480-15:2022, viscosity modifying admixtures, VMA testing, reference concrete, concrete admixtures, concrete testing methods, slump flow, sieve segregation, fresh concrete density, compressive strength, EN 934-2, EN 197-1, EN 12620, concrete standardization, admixture performance evaluation.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2022
Kemijski dodatki za beton, malto in injekcijsko maso - Metode preskušanja - 15.
del: Referenčni beton in metode za preskušanje spreminjanja viskoznosti
dodatkov
Admixtures for concrete, mortar and grout - Test methods - Part 15: Reference concrete
and method for testing viscosity modifying admixtures
Zusatzmittel für Beton, Mörtel und Einpressmörtel - Prüfverfahren - Teil 15:
Referenzbeton und Prüfverfahren zur Prüfung von viskositätsmodifizierenden
Zusatzmitteln
Adjuvants pour béton, mortier et coulis - Méthodes d’essai - Partie 15 : Béton de
référence et méthode d’essai des adjuvants modificateurs de viscosité
Ta slovenski standard je istoveten z: prEN 480-15
ICS:
91.100.30 Beton in betonski izdelki Concrete and concrete
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2021
ICS 91.100.30 Will supersede EN 480-15:2013
English Version
Admixtures for concrete, mortar and grout - Test methods
- Part 15: Reference concrete and method for testing
viscosity modifying admixtures
Adjuvants pour béton, mortier et coulis - Méthodes Zusatzmittel für Beton, Mörtel und Einpressmörtel -
d'essai - Partie 15 : Béton de référence et méthodes Prüfverfahren - Teil 15: Referenzbeton und
d'essai pour la vérification des adjuvants modificateurs Prüfverfahren für viskositätsmodifizierende
de viscosité Zusatzmittel
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 104.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 480-15:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
4.1 Cement . 5
4.2 Aggregate . 5
4.3 Mixing water . 5
6.1 Mix proportions . 6
6.2 Mixing and testing . 6
European foreword
This document (prEN 480-15:2021) has been prepared by Technical Committee CEN/TC 104 “Concrete
and related products”, the secretariat of which is held by SN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 480-15:2013.
This document has been drafted by Subcommittee 3 (SC 3) of CEN/TC 104 “Admixtures for concrete,
mortar and grout”.
This document is part of the series EN 480 Admixtures for concrete, mortar and grout — Test methods,
which comprises the following parts:
— Part 1: Reference concrete and reference mortar for testing
— Part 2: Determination of setting time
— Part 4: Determination of bleeding of concrete
— Part 5: Determination of capillary absorption
— Part 6: Infrared analysis
— Part 8: Determination of the conventional dry material content
— Part 10: Determination of water soluble chloride content
— Part 11: Determination of air void characteristics in hardened concrete
— Part 12: Determination of the alkali content of admixtures
— Part 13: Reference masonry mortar for testing mortar admixtures
— Part 14: Determination of the effect on corrosion susceptibility of reinforcing steel by potentiostatic
electro-chemical test
— Part 15: Reference concrete and method for testing viscosity modifying admixtures (the present
document)
This document is applicable together with the other standards of the EN 480 series and for testing
admixtures in accordance with the EN 934 series of standards.
The main changes compared with the previous edition are as follows:
a) identification of the relevant test method standard for the determination of the density of fresh
concrete in Table 2;
b) editorial changes.
1 Scope
This document specifies the constituent materials, the composition and the mix procedure to produce a
reference concrete with a prescribed consistency and segregated portion for testing viscosity modifying
admixtures as defined in EN 934-2. It also describes how to determine the requirements for the test mix
in comparison with the control mix.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 196-2, Method of testing cement — Part 2: Chemical analysis of cement
EN 196-6, Methods of testing cement — Part 6: Determination of fineness
EN 197-1, Cement — Part 1: Composition, specifications and conformity criteria for common cements
EN 934-2, Admixtures for concrete, mortar and grout — Part 2: Concrete admixtures — Definiti
...