EN 1367-2:2009

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

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.
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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

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

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.
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

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

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 the baskets at all subsequent stages to minimize any loss by abrasion. 9 Procedure 9.1 Suspend each basket in a container holding the saturated magnesium sulfate solution at (20 ± 2) °C so that the top of the aggregate is completely immersed to a depth of 20 mm for a period of (17 ± 0,5) h. A minimum of 20 mm clearance shall be maintained between each basket, container sides and accumulated salt cakes. SIST EN 1367-2:2010

Cover the container to avoid evaporation and contamination. 9.2 After immersion, remove each basket from the solution and drain for (2 ± 0,25) h then cover the container immediately. Dry each basket as in 8.2 and cool to laboratory temperature for (5 ± 0,25) h. 9.3 Prior to the next immersion, break up any salt cake which may have accumulated at the bottom of the container, stir the solution thoroughly and allow to settle for 30 min. Check the density of the solution in the container as specified in 7.3.2. If the density is outside the specified range, replace the solution with unused saturated solution as prepared in accordance with 7.3.1. Where severe disintegration of aggregate occurs during immersion, the measured densities of the solution may be inaccurate due to suspended fines or ion-exchange effects. Under these circumstances, replace with unused solution. 9.4 Repeat the process specified in 9.1 to 9.3 fo
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