SIST EN 1367-2:2010
(Main)Tests for thermal and weathering properties of aggregates - Part 2: Magnesium sulfate test
Tests for thermal and weathering properties of aggregates - Part 2: Magnesium sulfate test
This European Standard describes the reference method used for type testing and in cases of dispute for assessing how an aggregate behaves when subjected to the cyclic action of immersion in magnesium sulfate, followed by oven drying. 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.
NOTE The majority of aggregates can be tested for performance using this method. Precision has been established for the rock types listed in Annex A. The test may not be suitable for all rock types and reservations have been expressed elsewhere in respect of some carbonate aggregates and some aggregates having a high proportion of magnesium bearing materials or of cryptocrystalline quartz.
Prüfverfahren für thermische Eigenschaften und Verwitterungsbeständigkeit von Gesteinskörnungen - Teil 2: Magnesiumsulfat-Verfahren
Diese Europäische Norm legt das für die Erstprüfung und in Streitfällen anzuwendende Referenzverfahren für
die Beurteilung des Verhaltens einer Gesteinskörnung fest, die einer Wechselbeanspruchung durch Eintauchen
in Magnesiumsulfat und anschließender Trocknung in einer Wärmekammer ausgesetzt wird. Für
andere Zwecke, speziell im Rahmen der werkseigenen Produktionskontrolle, dürfen andere Verfahren
angewendet werden, sofern ein ausreichender Zusammenhang zum Referenzverfahren nachgewiesen wurde.
ANMERKUNG Das Verhalten der Mehrzahl der Gesteinskörnungen kann nach diesem Verfahren geprüft werden. Die
Präzision ist für die in Anhang A aufgeführten Gesteinsarten festgestellt worden. Der Versuch ist möglicherweise nicht für
alle Gesteinsarten geeignet. Es sind Vorbehalte hinsichtlich einiger Carbonat-Gesteinskörnungen und Gesteinskörnungen
mit einem hohen Anteil an magnesiumhaltigen Mineralien oder kryptokristallinem Quarz geäußert worden.
Essais pour déterminer les propriétés thermiques et l'altérabilité des granulats - Partie 2 : Essai au sulfate de magnésium
La présente norme européenne décrit la méthode de référence utilisée pour les essais de type et, en cas de litige, pour
l’évaluation du comportement d'un granulat lorsqu'il est soumis à l'action cyclique d'immersion dans du sulfate de
magnésium, suivi d'un étuvage. Lorsque d'autres objectifs sont visés, en particulier le contrôle de fabrication en usine,
d'autres méthodes peuvent être utilisées, à condition que des corrélations appropriées avec la méthode de référence aient
été établies.
NOTE Le niveau de performance de la plupart des granulats peut être vérifié à l’aide de cette méthode d'essai. La fidélité de cette
méthode a été établie pour les types de roches énumérés dans l'annexe A. L'essai peut ne pas convenir à tous les types de roches et
des réserves ont par ailleurs été exprimées en ce qui concerne les granulats calcaires et les granulats à proportion élevée en matériaux
magnésiens ou en quartz cryptocristallin.
Preskusi lastnosti agregatov zaradi termičnih in vremenskih vplivov - 2. del: Preskus z magnezijevim sulfatom
Ta evropski standard opisuje referenčne metode, uporabljene za tipsko preskušanje in v primerih spora zaradi ocenjevanja, kako se agregat obnaša, ko je izpostavljen cikličnemu potapljanju v magnezijev sulfat, nato pa sušenju v peči. Za ostale namene, zlasti v kontroli proizvodnje, se lahko uporabijo druge metode, pod pogojem, da je bilo vzpostavljeno primerno delovno razmerje z referenčno metodo.
General Information
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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 2: Magnesiumsulfat-VerfahrenEssais pour déterminer les propriétés thermiques et l'altérabilité des granulats - Partie 2 : Essai au sulfate de magnésiumTests for thermal and weathering properties of aggregates - Part 2: Magnesium sulfate test91.100.15Mineralni materiali in izdelkiMineral materials and productsICS:Ta slovenski standard je istoveten z:EN 1367-2:2009SIST EN 1367-2:2010en,fr,de01-februar-2010SIST EN 1367-2:2010SLOVENSKI
STANDARDSIST EN 1367-2:19991DGRPHãþD
SIST EN 1367-2:2010
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1367-2
October 2009 ICS 91.100.15 Supersedes EN 1367-2:1998English Version
Tests for thermal and weathering properties of aggregates - Part 2: Magnesium sulfate test
Essais pour déterminer les propriétés thermiques et l'altérabilité des granulats - Partie 2 : Essai au sulfate de magnésium
Prüfverfahren für thermische Eigenschaften und Verwitterungsbeständigkeit von Gesteinskörnungen -Teil 2: Magnesiumsulfat-Verfahren This European Standard was approved by CEN on 19 September 2009.
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 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 Management Centre has the same status as the official 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1367-2:2009: ESIST EN 1367-2:2010
EN 1367-2:2009 (E) 2 Contents Page Foreword . 31 Scope. 42 Normative references . 43 Terms and definitions . 44 Principle . 55 Sampling . 56 Apparatus . 57 Reagents . 68 Preparation of test specimens . 69 Procedure . 610 Calculation and expression of results . 711 Test report . 7Annex A (informative)
Precision . 9Annex B (informative)
Testing aggregates outside the size and range 10 mm to 14 mm . 10Annex C (informative)
Assessment of complete grading . 11Bibliography . 15 SIST EN 1367-2:2010
EN 1367-2:2009 (E) 3 Foreword This document (EN 1367-2:2009) has been prepared by Technical Committee CEN/TC 154 “Aggregates”, the secretariat of which is held by BSI. 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 April 2010, and conflicting national standards shall be withdrawn at the latest by April 2010. 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 1367-2:1998. This European Standard is part of 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 sulfate test; Part 3: Boiling test for “Sonnenbrand basalt"; Part 4: Determination of drying shrinkage; Part 5: Determination of resistance to thermal shock; Part 6: Determination of resistance to freezing and thawing in the presence of salt (NaCl). 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 1367-2:2010
EN 1367-2:2009 (E) 4 1 Scope This European Standard describes the reference method used for type testing and in cases of dispute for assessing how an aggregate behaves when subjected to the cyclic action of immersion in magnesium sulfate, followed by oven drying. 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. NOTE The majority of aggregates can be tested for performance using this method.
Precision has been established for the rock types listed in Annex A. The test may not be suitable for all rock types and reservations have been expressed elsewhere in respect of some carbonate aggregates and some aggregates having a high proportion of magnesium bearing materials or of cryptocrystalline quartz. 2 Normative references
The following referenced documents are indispensable for the application 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 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 932-3, Tests for general properties of aggregates – Part 3: Procedure and terminology for simplified petrographic description EN 932-5, Tests for general properties of aggregates – Part 5: Common equipment and calibration EN 933-2, Tests for geometrical properties of aggregates – Part 2: Determination of particle size distribution – Test sieves, nominal size of apertures ISO 649-1, Laboratory glassware – Density hydrometers for general purposes – Part 1: Specification 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 laboratory sample sample intended for laboratory testing 3.2 test specimen sample used in a single determination when a test method requires more than one determination of a property SIST EN 1367-2:2010
EN 1367-2:2009 (E) 5 3.3 test portion sample used as a whole in a single test 4 Principle Two test specimens of aggregate in the size range 10 mm to 14 mm are subjected to five cycles of immersion in a saturated solution of magnesium sulfate, followed by oven drying at (110 ± 5) ºC. This subjects the test specimens of aggregate to the disruptive effects of the repeated crystallization and rehydration of magnesium sulfate within the pores of the aggregate. The degradation arising from the disruptive effects is measured by the extent to which material finer than 10 mm in particle size is produced. NOTE The procedure can also be applied to other aggregate fractions (Annex B) or combinations of fractions (Annex C). 5 Sampling The laboratory sample to be used for the test shall be taken in accordance with EN 932-1. 6 Apparatus Unless otherwise stated, all apparatus shall conform to the general requirements of EN 932-5. 6.1 Test sieves, conforming to EN 933-2, of 10 mm and 14 mm size. 6.2 Balance, of 2 kg capacity, accurate to 0,1 g. 6.3 Brass or stainless steel mesh baskets, at least two, for immersing test specimens in the solution. A suitable design is shown in Figure 1. 6.4 Containers, such that the baskets listed in 6.3 can be readily placed in and out, complying with the minimum separation clearances specified in 9.1, and with a volume at least five times the volume of the immersed aggregate. 6.5 Tank or tank rooms, capable of maintaining the temperature of the solution inside the containers at (20 ± 2) ºC during the immersion stages. 6.6 Ventilated drying oven with forced air circulation, of adequate capacity.
The oven shall be capable of being controlled at (110 ± 5) ºC. 6.7 Density hydrometer, complying with ISO 649-1 and graduated at 20 ºC for medium surface tension 55 mN/m to measure densities in the range of 1,284 g/ml to 1,300 g/ml to an accuracy of 0,001 g/ml. 6.8 Desiccator, large enough to contain at least two of the baskets listed in 6.3. 6.9 Thermometer, of range 0 ºC to 120 ºC and accurate to 1 ºC. 6.10 Timing device, such that the full range of timed periods can be measured to an accuracy of ±1 min. SIST EN 1367-2:2010
EN 1367-2:2009 (E) 6 7 Reagents 7.1 Distilled, or deionized water. 7.2 Barium chloride 5 % solution, made by dissolving 5 g of barium chloride in 100 ml of distilled water. 7.3 Saturated solution of magnesium sulfate, which may be made by dissolving magnesium sulfate heptahydrate of reagent grade in distilled or deionized water. 7.3.1 Prepare the solution by slowly adding 1 500 g of the crystalline salt to each litre of water.
A minimum of 3 l is required for each test. NOTE It is advisable to prepare a second batch of solution using the above procedure as a reserve, in case of solution failure during the test procedure, see
9.3. During preparation, maintain the temperature of the solution between 25 ºC and 30 ºC and stir thoroughly during the addition of the crystals. After preparation, lower the temperature to (20 ± 2) ºC, and maintain at this temperature for (48 ± 1) h. 7.3.2 Prior to use, check that the solution has achieved a density of (1,292 ± 0,008) g/ml by decanting a portion of the solution into a glass jar, measuring the density with the hydrometer, and returning the solution to the container. 8 Preparation of test specimens 8.1 Reduce the laboratory sample in accordance with EN 932-2 to produce two test specimens of sufficient mass such that each will produce a minimum of 500 g of the 10 mm to 14 mm size when processed as specified in 8.3. NOTE Guidance on testing other fractions is given in Annex B and on testing all fractions in Annex C. 8.2 Dry each test specimen in the oven at (110 ± 5) ºC for (24 ± 1) h, and allow to cool in the desiccator to laboratory temperature. 8.3 Sieve each test specimen using the 10 mm and 14 mm sieves to reject oversize and undersize to give a mass of approximately 500 g each. 8.4 Wash each test specimen with distilled water until free from dust, allow to drain and dry in the oven as specified in 8.2. 8.5 Repeat the sieving as specified in 8.3, to ensure that only material in the 10 mm to 14 mm range is used. 8.6 Weigh out between (420 ± 0,1) g and (430 ± 0,1) g from each test specimen and record the masses (M1).
Transfer the test specimens to two labelled mesh baskets. Avoid shaking
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