SIST EN 1097-5:2008

Tests for mechanical and physical properties of aggregates - Part 5: Determination of the water content by drying in a ventilated oven

This standard describes the reference method used for type testing and in cases of dispute for the determination of the water content of aggregates by drying in a ventilated oven. For other purposes, in particular factory production control, other methods may be used provided that an appropriate working relationship with the reference method has been established.

Prüfverfahren für mechanische und physikalische Eigenschaften von Gesteinskörnungen - Teil 5: Bestimmung des Wassergehaltes durch Ofentrocknung

Diese Norm beschreibt das Referenzverfahren für die Erstprüfung und in Streitfällen für die Bestimmung des Wassergehaltes von Gesteinskörnungen durch Ofentrocknung. Für andere Zwecke, speziell im Rahmen der werkseigenen Produktionskontrolle, dürfen andere Verfahren angewendet werden, sofern ein ausreichender Zusammenhang mit dem Referenzverfahren nachgewiesen wurde.

Essais pour déterminer les caractéristiques mécaniques et physiques des granulats - Partie 5: Détermination de la teneur en eau par séchage en étuve ventilée

La présente norme décrit la méthode de référence utilisée pour les essais de type et, en cas de conflit, pour la détermination de la teneur en eau des granulats par séchage en étuve ventilée. Pour d'autres objectifs, en particulier dans le cadre du contrôle de la production en usine, d'autres méthodes peuvent être employées si une corrélation avec la méthode de référence a été établie.

Preskusi mehanskih in fizikalnih lastnosti agregatov - 5. del: Določevanje vode s sušenjem v prezračevanem sušilniku

General Information

• Status: Published
• Publication Date: 05-Aug-2008
• ICS: 91.100.15 - Mineral materials and products
• Technical Committee: AGR - Aggregates
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 10-Jul-2008
• Due Date: 14-Sep-2008
• Completion Date: 06-Aug-2008
• 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: EN 1097-5:2008 - Tests for mechanical and physical properties of aggregates - Part 5: Determination of the water content by drying in a ventilated oven

Relations

• Replaces: SIST EN 1097-5:2000 - Tests for mechanical and physical properties of aggregates - Part 5: Determination of the water content by drying in a ventilated oven
• Effective Date: 01-Sep-2008

Overview

EN 1097-5:2008 is the CEN reference method for determining the water content of aggregates by oven-drying in a ventilated oven. It is intended as the official procedure for type testing and resolving disputes. For routine or factory production control, alternative moisture measurement methods may be used only if an established working relationship to this reference method exists.

Key topics and technical requirements

• Scope and purpose: Defines the oven-drying reference method for total free water (surface + accessible pore water) in aggregate samples.
• Oven conditions: Default drying temperature is (110 ± 5) °C; lower temperatures (e.g., (40 ± 5) °C) are allowed for temperature-sensitive aggregates. Air movement must not cause loss of fines.
• Test portion size:
  • If upper sieve size D ≥ 1.0 mm: minimum mass = 0.2 × D (kg).
  • If D < 1.0 mm: minimum mass = 0.2 kg.
  • Annex A: for lightweight aggregates, sample size is volume-based (1.0–2.0 L depending on D).
• Apparatus and accuracy:
  • Ventilated drying oven, desiccator, heat-resistant trays, stirrer and a balance accurate to 0.1% of the test portion mass.
• Procedure:
  • Weigh moist sample (M1), dry to constant mass (M3) in ventilated oven, with successive weighings at least 1 h apart until difference ≤ 0.1%.
  • Cooling may be performed in a desiccator or a closed cabinet; Annex A allows immediate weighing of hot trays for lightweight aggregates (with appropriate care).
• Calculation:
  • Water content w (%) = ((M1 − M3) / M3) × 100. Results expressed to the nearest 0.1%.
• Precision:
  • Informative precision data (Annex C) gives repeatability r1 = 0.11 + 0.079·X, where X is the mean water content.

Applications and users

EN 1097-5:2008 is used by:

• Materials and testing laboratories performing type tests or dispute resolution for aggregate suppliers and construction projects.
• Aggregate producers establishing reference moisture values and validating alternative moisture measurement methods for factory production control.
• Construction quality control teams who need accurate, standardized moisture data for concrete, asphalt and other mix designs.
• Regulatory bodies and specifiers requiring a standardized method for contractual compliance.

Practical uses include determining correct dry-mix proportions, calculating absorbed water for particle-density tests, and verifying moisture corrections in production.

Related standards

• EN 932-2: Methods for reducing laboratory samples
• EN 932-5: Common equipment and calibration
• Other EN 1097 parts (particle density, abrasion, bulk density) and related series: EN 932, EN 933, EN 1367, EN 1744, EN 13179

Keywords: EN 1097-5:2008, water content, aggregates, oven-drying, ventilated oven, oven-dry method, moisture determination, lightweight aggregates, test portion, constant mass.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Prüfverfahren für mechanische und physikalische Eigenschaften von Gesteinskörnungen - Teil 5: Bestimmung des Wassergehaltes durch OfentrocknungEssais pour déterminer les caractéristiques mécaniques et physiques des granulats - Partie 5: Détermination de la teneur en eau par séchage en étuve ventiléeTests for mechanical and physical properties of aggregates - Part 5: Determination of the water content by drying in a ventilated oven91.100.15Mineralni materiali in izdelkiMineral materials and productsICS:Ta slovenski standard je istoveten z:EN 1097-5:2008SIST EN 1097-5:2008en,fr,de01-september-2008SIST EN 1097-5:2008SLOVENSKI
STANDARDSIST EN 1097-5:20001DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1097-5March 2008ICS 91.100.15Supersedes EN 1097-5:1999
English VersionTests for mechanical and physical properties of aggregates -Part 5: Determination of the water content by drying in aventilated ovenEssais pour déterminer les caractéristiques mécaniques etphysiques des granulats - Partie 5: Détermination de lateneur en eau par séchage en étuve ventiléePrüfverfahren für mechanische und physikalischeEigenschaften von Gesteinskörnungen - Teil 5:Bestimmung des Wassergehaltes durch OfentrocknungThis European Standard was approved by CEN on 4 February 2008.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 CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1097-5:2008: ESIST EN 1097-5:2008

Variations to the determination of the water content by drying in a ventilated oven for use with lightweight aggregates.8 Annex B (informative)
Example of calculation of the water content by drying in a ventilated oven.9 Annex C (informative)
Precision.10 Bibliography.11
designation of aggregate in terms of lower (d) and upper (D) sieve sizes. This designation accepts the presence of some particles which will be retained on the upper sieve (oversize) and some which will pass the lower sieve (undersize) 3.2 test portion sample used as a whole in a single test 3.3 constant mass successive weighings after drying at least 1 h apart not differing by more than 0,1 % NOTE In many cases constant mass can be achieved after a test portion has been dried for a pre
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