SIST EN 1367-6:2008

Tests for thermal and weathering properties of aggregates - Part 6: Determination of resistance to freezing and thawing in the presence of salt (NaCl)

This European Standard specifies a method of assessing the frost resistance of an aggregate when it is subjected to the cyclic action of freezing and thawing in the presence of 1 % solution of NaCl in de-ionized or distilled water.
The results of this test provide a means for assessing an aggregate’s resistance to this form of weathering in areas where frequent freeze-thaw cycling occurs with seawater sprays or abundant de-icers conditions, and where result values of EN 1367-1 test method do not describe correctly aggregate performance in extreme conditions.
This European Standard gives the option to control the thawing sequence either by immersion in water or by using air circulation in the low temperature cabinet to obtain the required reference temperature.
This test method is applicable to coarse aggregates or to coarse aggregates' fractions of all-in materials. This method is not appropriate for lightweight aggregates covered by EN 13055 or aggregates which can not be submitted to 110 °C oven drying.

Prüfverfahren für thermische Eigenschaften und Verwitterungsbeständigkeit von Gesteinskörnungen - Teil 6: Beständigkeit gegen Frost-Tau-Wechsel in der Gegenwart von Salz (NaCl)

Diese Europäische Norm legt ein Prüfverfahren zur Beurteilung der Frostbeständigkeit von Gesteinskörnungen
bei zyklischer Frost-Tau-Wechselbeanspruchung in Anwesenheit einer 1%igen Lösung von NaCl
in entionisiertem oder destilliertem Wasser fest.
Die Prüfergebnisse ermöglichen die Beurteilung der Beständigkeit einer Gesteinskörnung gegen diese Art der
Witterungsbeanspruchung in Bereichen, die häufig der Beanspruchung durch Frost-Tau-Wechsel und der
Einwirkung von Salzgischt oder Enteisungsmitteln ausgesetzt sind und in denen die Ergebniswerte des Prüfverfahrens
nach EN 1367-1 das Leistungsverhalten von Gesteinskörnungen unter extremen Bedingungen
nicht korrekt beschreiben.
Diese Europäische Norm stellt es frei, ob die Regelung in der Auftauphase mit Hilfe eines Wasserbades oder
durch Luftumwälzung in einem Wärmeschrank erfolgt, um die geforderte Bezugstemperatur einzustellen.
Dieses Prüfverfahren ist auf grobe Gesteinskörnungen oder auf die Grobkornanteile von Gesteinskörnungen
anwendbar, die alle Korngemische enthalten. Dieses Prüfverfahren ist nicht für leichte Gesteinskörnungen
nach EN 13055 geeignet oder für Gesteinskörnungen, die nicht einer Ofentrocknung bis 110 °C unterzogen
werden können.

Essais pour déterminer les propriétés thermiques et l'altérabilité des granulats - Partie 6: Résistance au gel-dégel au contact du sel

La présente Norme européenne spécifie une méthode d’essai pour évaluer la résistance au gel des granulats lorsqu’ils sont soumis à un cycle de gel-dégel au contact d’une solution de NaCI à 1 % dans de l’eau déminéralisée ou distillée.
Les résultats apportent un moyen d’évaluer la résistance du granulat à cette forme d’altération dans des zones où il se produit régulièrement des cycles de gel-dégel, en particulier dans les lieus où les embruns et le déverglaçage sont fréquents. Et pour lesquelles les résultats de la norme EN 1367-1 ne décrivent pas correctement les performances des granulats en condition extrême.
La présente Norme apporte la possibilité de contrôler le processus de dégel dans l’armoire soit par ventilation, soit par circulation d’eau, afin d’obtenir une température correcte de l’échantillon de référence.
L’essai s’applique aux gravillons et aux classes granulaires des gravillons de la grave.
Cet essai n’est pas approprié pour les granulats concernés par la norme EN 13055 ni pour les granulats qui ne peuvent supporter un sèchage à 110 °C.

Preskusi lastnosti agregatov zaradi termičnih in vremenskih vplivov - 6. del: Odpornost proti zmrzovanju in tajanju ob prisotnosti soli (NaCl)

General Information

• Status: Published
• Publication Date: 01-Oct-2008
• ICS: 91.100.15 - Mineral materials and products
• Technical Committee: AGR - Aggregates
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 23-Sep-2008
• Due Date: 28-Nov-2008
• Completion Date: 02-Oct-2008
• Ref Project: EN 1367-6:2008 - Tests for thermal and weathering properties of aggregates - Part 6: Determination of resistance to freezing and thawing in the presence of salt (NaCl)

Overview

EN 1367-6:2008 - Tests for thermal and weathering properties of aggregates, Part 6 - specifies a laboratory freeze–thaw with salt (NaCl) test to assess the frost resistance of coarse aggregates when exposed to cyclic freezing and thawing in a 1 % NaCl solution. The method is intended for environments with seawater spray or extensive use of de‑icers where standard freeze–thaw tests (EN 1367‑1) may not adequately reflect performance under saline conditions.

Key topics and requirements

• Scope: Applies to coarse aggregates or coarse fractions of all‑in materials (preferred fraction 8–16 mm; alternatively 4–8 mm). Not suitable for lightweight aggregates covered by EN 13055 or aggregates that cannot be oven‑dried at 110 °C.
• Salt solution: Test uses a 1 % NaCl solution (20.0 g NaCl in 1 980 g de‑ionized or distilled water to make 2 000 g).
• Specimen preparation:
  • Wash, dry to constant mass at (110 ± 5) °C and weigh (M1).
  • Three individual specimens per aggregate source; typical masses: 2 000 g (8–16 mm) or 1 000 g (4–8 mm).
• Freeze–thaw cycle:
  • Soak specimens 24 ± 1 h in 1 % NaCl, covered by at least 10 mm solution.
  • Subject specimens to 10 freeze–thaw cycles: cool to approximately −17.5 °C under solution and thaw to 20 °C. Thawing may be controlled by immersion in water or by air circulation in the low‑temperature cabinet.
  • Maintain specified time/temperature profile and temperature control at the reference measuring point.
• Result measurement:
  • After cycles, sieve the specimen through a sieve with aperture d/2 (half the lower size limit).
  • Dry residue to constant mass and weigh (M2).
  • Mass loss (F) = 100 × (M1 − M2) / M1 (%). Report individual F values and the mean FNaCl.
• Apparatus: ventilated drying oven, low‑temperature cabinet with air circulation, corrosion‑resistant cans, balances, sieves.

Applications

• Assess aggregate durability for:
  • Coastal and marine infrastructure subject to seawater spray
  • Road and pavement materials exposed to frequent de‑icing salts
  • Projects where EN 1367‑1 results underestimate salt-related deterioration
• Helps specifiers, materials laboratories and aggregate producers determine whether an aggregate is suitable for use in freeze–thaw and saline exposure conditions.

Who uses this standard

• Aggregate testing laboratories, quality control teams, civil engineers, pavement designers, highway authorities, port and coastal infrastructure planners, and specification writers.

Related standards

• EN 1367‑1 (freeze–thaw without salt), EN 13055 (lightweight aggregates), EN 932 (sampling/reduction), EN 933 (sieving), EN 1097, EN 1744.

Keywords: EN 1367-6:2008, freeze–thaw test, NaCl, salt resistance, frost resistance, aggregates, de‑icers, seawater spray, aggregate testing.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Prüfverfahren für thermische Eigenschaften und Verwitterungsbeständigkeit von Gesteinskörnungen - Teil 6: Beständigkeit gegen Frost-Tau-Wechsel in der Gegenwart von Salz (NaCl)Essais pour déterminer les propriétés thermiques et l'altérabilité des granulats - Partie 6: Résistance au gel-dégel au contact du selTests for thermal and weathering properties of aggregates - Part 6: Determination of resistance to freezing and thawing in the presence of salt (NaCl)91.100.15Mineralni materiali in izdelkiMineral materials and productsICS:Ta slovenski standard je istoveten z:EN 1367-6:2008SIST EN 1367-6:2008en,fr,de01-november-2008SIST EN 1367-6:2008SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1367-6July 2008ICS 91.100.15 English VersionTests for thermal and weathering properties of aggregates - Part6: Determination of resistance to freezing and thawing in thepresence of salt (NaCl)Essais pour déterminer les propriétés thermiques etl'altérabilité des granulats - Partie 6: Résistance au gel-dégel au contact du selPrüfverfahren für thermische Eigenschaften undVerwitterungsbeständigkeit von Gesteinskörnungen - Teil 6:Beständigkeit gegen Frost-Tau-Wechsel in der Gegenwartvon Salz (NaCl)This European Standard was approved by CEN on 21 June 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 1367-6:2008: ESIST EN 1367-6:2008

page
Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.4 4 Principle.5 5 Apparatus.5 6 Sampling.5 7 Test specimens.6 8 Procedure.6 9 Calculation and expression of results.8 10 Test report.8 Annex A (informative)
Precision.9 Bibliography.10
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 January 2009, and conflicting national standards shall be withdrawn at the latest by January 2009. 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 European Standard is one Part in the EN 1367 series of European Standards under the general title Tests for thermal and weathering properties of aggregates. The other parts are:
Part 1: Determination of resistance to freezing and thawing
Part 2: Magnesium sulphate test
Part 3: Boiling test for “Sonnenbrand basalt"
Part 4: Determination of drying shrinkage
Part 5: Determination of resistance to thermal shock
Test methods for other properties of aggregates will be covered by Parts of the following European Standards:
EN 932
Tests for general properties of aggregates EN 933
Tests for geometrical properties of aggregates EN 1097 Tests for mechanical and physical properties of aggregates EN 1744 Tests for chemical properties of aggregates EN 13179 Tests for filler aggregate used in bituminous mixtures
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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 the United Kingdom. SIST EN 1367-6:2008

This European Standard specifies a method of assessing the frost resistance of an aggregate when it is subjected to the cyclic action of freezing and thawing in the presence of 1 % solution of NaCl in
de-ionized or distilled water.
The results of this test provide a means for assessing an aggregate’s resistance to this form of weathering in areas where frequent freeze-thaw cycling occurs with seawater sprays or abundant de-icers conditions, and where result values of EN 1367-1 test method do not describe correctly aggregate performance in extreme conditions.
This European Standard gives the option to control the thawing sequence either by immersion in water or by using air circulation in the low temperature cabinet to obtain the required reference temperature.
This test method is applicable to coarse aggregates or to coarse aggregates' fractions of all-in materials. This method is not appropriate for lightweight aggregates covered by EN 13055 or aggregates which can not be submitted to 110 °C oven drying.
2 Normative references
The following referenced documents are indispensable for the application of this document. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 932-1, Tests for general properties of aggregates — Part 1: Methods for sampling
EN 932-2, Tests for general properties of aggregates — Part 2: Methods for reducing laboratory samples
EN 932-5, Tests for general properties of aggregates — Part 5: Common equipment and calibration
EN 933-1, Tests for geometrical properties of aggregates — Part 1: Determination of particle size distribution — Sieving method
EN 933-2, Tests for geometrical properties of aggregates — Part 2: Determination of particle size distribution — Test sieves, nominal size of apertures
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1 constant mass successive weighings of the test specimen, after drying it, of at least 1 h apart, not differing by more than 0,1 %
NOTE In many cases constant mass can be achieved after a test specimen has been dried for a pre-determined period in a ventilated drying oven at (110 ± 5) °C.
3.2 reference temperature temperature of the test specimen measured at the reference temperature measuring po
...