EN 480-8:2012

Admixtures for concrete, mortar and grout - Test methods - Part 8: Determination of the conventional dry material content

This European Standard describes a method for determining the conventional dry material content of an admixture.

Zusatzmittel für Beton, Mörtel und Einpressmörtel - Prüfverfahren - Teil 8: Bestimmung des Feststoffgehalts

Diese Europäische Norm legt ein Verfahren zur Bestimmung des Feststoffgehalts eines Zusatzmittels fest.

Adjuvants pour béton, mortier et coulis - Méthodes d'essai - Partie 8: Détermination de l'extrait sec conventionnel

La présente Norme européenne décrit une méthode de détermination de l'extrait sec conventionnel d'un adjuvant.

Kemijski dodatki za beton, malto in injekcijsko maso - Metode preskušanja - 8. del: Določanje deleža suhe snovi

Ta evropski standard zajema metodo za določitev deleža suhe snovi v dodatku.

General Information

• Status: Published
• Publication Date: 15-May-2012
• ICS: 01.040.91 - Construction materials and building (Vocabularies)
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: CEN/TC 104 - Concrete ( performance, production, placing and compliance criteria )
• Drafting Committee: CEN/TC 104/SC 3 - Admixtures for concrete
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 13-Nov-2020
• Completion Date: 23-Sep-2025
• Ref Project: SIST EN 480-8:2012 - Admixtures for concrete, mortar and grout - Test methods - Part 8: Determination of the conventional dry material content

Relations

• Replaces: EN 480-8:1996 - Admixtures for concrete, mortar and grout - Test methods - Part 8: Determination of the conventional dry material content
• Effective Date: 21-Aug-2010

Overview

EN 480-8:2012 is a European Standard developed by CEN that specifies the test method for determining the conventional dry material content of admixtures used in concrete, mortar, and grout. This standard ensures consistent measurement of dry material content, a critical parameter influencing the performance and quality of admixtures in construction materials.

The standard applies to both liquid and powder admixtures and prescribes a reliable oven drying method at a controlled temperature to obtain consistent results. EN 480-8:2012 supersedes previous editions, introducing improvements such as drying specimens to a constant weight for enhanced accuracy.

Key Topics

• Scope
  Defines the method to determine the conventional dry material content of admixtures for concrete, mortar, and grout.

• Test Principle
  Samples are dried at (105 ± 3) °C until reaching constant weight. The dry material content is calculated by comparing the mass before and after drying.

• Apparatus Required

  • Weighing bottles with stoppers or evaporating basins
  • Desiccator with efficient desiccants
  • Forced ventilation oven with thermostat control at specified temperature
  • High-resolution balance (0.5 mg accuracy)

• Testing Procedure

  • Pre-dry containers to constant weight.
  • Weigh a known amount (approx. 2 g) of admixture spread uniformly.
  • Dry samples in the oven, cooling in a desiccator between weightings.
  • Repeat drying until two consecutive results differ by no more than 2 mg.
  • Conduct duplicate tests for accuracy and reproducibility.

• Result Calculation and Acceptance Criteria
  Dry material content (%) = (Mass of dried residue / Mass of admixture) × 100
  Acceptable variation between duplicates depends on the dry content value, ensuring reliable and reproducible results.

• Test Report Requirements
  Includes referencing EN 480-8, admixture identification, test date, laboratory and operator details, vessel type, sample origin, and final dry material content value.

Applications

This standard is essential for:

• Quality Control of Admixtures
  Enabling manufacturers and users to verify the dry material content of admixtures, crucial for dosing and performance predictability in concrete and mortar formulations.

• Construction Material Specification
  Helping engineers and contractors ensure admixture quality meets prescribed standards consistent with EN 934 series and other related standards.

• Research and Development
  Facilitating accurate characterization of admixture materials during formulation improvements and new product development.

• Compliance Testing
  Assisting certification bodies and laboratories in providing standardized testing services to the construction industry across Europe.

Related Standards

EN 480-8 is part of the EN 480 series on admixture test methods, supporting harmonized testing protocols for construction materials:

• EN 480-1: Reference concrete and mortar for testing
• EN 480-2: Determination of setting time
• EN 480-4: Determination of bleeding
• EN 480-5: Determination of capillary absorption
• EN 480-6: Infrared analysis of admixtures
• EN 480-10: Water soluble chloride content
• EN 480-11: Air void characteristics in hardened concrete
• EN 480-12: Alkali content of admixtures
• EN 934-1: Common requirements for concrete admixtures

These standards collectively ensure comprehensive evaluation of admixture properties and behaviors in construction materials.

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Keywords: EN 480-8, conventional dry material content, admixtures testing, concrete admixtures, mortar admixtures, grout admixtures, European Standard, CEN, oven drying method, admixture quality control, construction material standards.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2012
1DGRPHãþD
SIST EN 480-8:1998
.HPLMVNLGRGDWNL]DEHWRQPDOWRLQLQMHNFLMVNRPDVR0HWRGHSUHVNXãDQMDGHO
'RORþDQMHGHOHåDVXKHVQRYL
Admixtures for concrete, mortar and grout - Test methods - Part 8: Determination of the
conventional dry material content
Zusatzmittel für Beton, Mörtel und Einpreßmörtel - Prüfverfahren - Teil 8: Bestimmung
des Feststoffgehalts
Adjuvants pour béton, mortier et coulis - Méthodes d'essai - Partie 8: Détermination de
l'extrait sec conventionnel
Ta slovenski standard je istoveten z: EN 480-8:2012
ICS:
91.100.10 Cement. Mavec. Apno. Malta Cement. Gypsum. Lime.
Mortar
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.

EUROPEAN STANDARD
EN 480-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2012
ICS 01.040.91; 91.100.30 Supersedes EN 480-8:1996
English Version
Admixtures for concrete, mortar and grout - Test methods - Part
8: Determination of the conventional dry material content
Adjuvants pour bétons, mortier et coulis - Méthodes d'essai Zusatzmittel für Beton, Mörtel und Einpressmörtel -
- Partie 8: Détermination de l'extrait sec conventionnel Prüfverfahren - Teil 8: Bestimmung des Feststoffgehalts
This European Standard was approved by CEN on 13 April 2012.

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. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 480-8:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Introduction .4
1 Scope .5
2 Principle .5
3 Apparatus .5
4 Procedure .5
5 Results .6
6 Test report .6
Bibliography .7

Foreword
This document (EN 480-8:2012) has been prepared by Technical Committee CEN/TC 104 “Concrete and
related products”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by November 2012, and conflicting national standards shall be withdrawn
at the latest by November 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 480-8:1996.
This draft European Standard is part of the series EN 480 "Admixtures for concrete, mortar and grout — Test
methods" which comprises the following:
 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 mo
...