1、BRITISH STANDARD BS EN 1367-3:2001 Incorporating Corrigendum No. 1 Tests for thermal and weathering properties of aggregates Part 3: Boiling test for “Sonnenbrand” basalt The European Standard EN 1367-3:2001 has the status of a British Standard ICS 91.100.15 BS EN 1367-3:2001 This British Standard,
2、having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 May 2001 BSI 17 August 2004 ISBN 0 580 36858 0 National foreword This British Standard is the official English
3、 language version of EN 1367-3:2001, including Corrigendum May 2004, which is included in a package of new European Standards being prepared by CEN/TC 154 relating to aggregates. Although the English text versions of these European Standards will be adopted as British Standards as they become availa
4、ble, the existing British Standards for aggregates will be retained, but only until such time that the completed package of European Standards becomes available. The original group of British Standards will then be withdrawn and this will be noted in Update Standards. The UK participation in its pre
5、paration was entrusted by Technical Committee B/502, Aggregates, to Subcommittee B/502/6, Test methods, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement intern
6、ational or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purpo
7、rt to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries
8、 on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back c
9、over and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 15332 Corrigendum No. 1 17 August 2004 Correction to subclause 9.2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 136
10、7-3 March 2001 ICS 91.100.15 Incorporating corrigendum May 2004 English version Tests for thermal and weathering properties of aggregates Part 3: Boiling test for “Sonnenbrand” basalt Essais pour dterminer les proprits thermiques et laltrabilit des granulats Partie 3: Essai dbullition pour les basal
11、tes coup de soleil Prfverfahren fr thermische Eigenschaften und Verwitterungsbestndigkeit von Gesteinskrnungen Teil 3: Kochversuch fr Sonnenbrand-Basalt This European Standard was approved by CEN on 19 January 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stip
12、ulate 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 Management Centre or to any CEN member. This European Standard exi
13、sts 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 Management Centre has the same status as the official versions. CEN members are the national standards bodi
14、es of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG M
15、anagement Centre: rue de Stassart, 36 B-1050 Brussels 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1367-3:2001 EPage 2 EN 1367-3: 2001 BSI 17 August 2004 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms a
16、nd definitions . 4 4 Principle. 5 5 Apparatus. 5 6 Sampling 5 7 Preparation of test portions . 6 8 Procedure. 7 9 Calculation and expression of results 8 10 Test report 8 Page 3 EN 1367-3: 2001 BSI 17 August 2004 Foreword This European Standard has been prepared by Technical Committee CEN/TC 154, Ag
17、gregates, 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 September 2001, and conflicting national standards shall be withdrawn at the latest by December 2
18、003. This European Standard forms part of a series of tests for thermal and weathering properties of aggregates. 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 geometr
19、ical 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. The other parts of EN 1367 will be: Part 1: Determination of resistance to freez
20、ing and thawing. Part 2: Magnesium sulfate test. Part 4: Determination of drying shrinkage. Part 5: Determination of resistance to thermal shock. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European St
21、andard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Page 4 EN 1367-3:2001 BSI 17 August 2004 1 Scope This European Standard specifies methods for th
22、e determination of the presence of signs of “Sonnenbrand” in basalt and the disintegration of aggregate produced from basalt showing such signs. The test is applicable to pieces of rock, and graded basalt coarse aggregates. 2 Normative references This European Standard incorporates by dated or undat
23、ed reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when i
24、ncorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies (including amendments). 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
25、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 aggr
26、egates Part 2: Determination of particle size distribution Test sieves, nominal size of apertures. EN 1097-2 Tests for mechanical and physical properties of aggregates Part 2: Methods for the determination of resistance to fragmentation. 3 Terms and definitions For the purposes of this European Stan
27、dard, the following terms and definitions apply. 3.1 Sonnenbrand type of rock decay that may be present in some basalts and which manifests itself under the influence of atmospheric conditions NOTE “Sonnenbrand” starts with the appearance of grey/white star-shaped spots. Usually hairline cracks are
28、generated radiating out from the spots and interconnecting them. This reduces the strength of the mineral fabric, and as a result the rock decays to small particles. Depending on the source this process may take place within months of extraction or extend over several decades. In exceptional cases a
29、 rapid decay results in the formation of large cracks and the breaking of aggregate particles. 3.2 laboratory sample sample intended for laboratory testing Page 5 EN 1367-3: 2001 BSI 17 August 2004 3.3 test portion sample used as a whole in a single test 3.4 test specimen sample used in a single det
30、ermination when a test method requires more than one determination of a property 3.5 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-determined period in
31、 a specified oven at (110 5) C. Test laboratories can determine the time required to achieve constant mass for specific types and sizes dependent upon the drying capacity of the oven used. 4 Principle Individual pieces of basalt rock are examined for signs of “Sonnenbrand” and samples of graded basa
32、lt are tested for percentage loss in mass and loss in strength after boiling. The strength is determined in accordance with EN 1097-2. 5 Apparatus 5.1 All apparatus, unless otherwise stated, shall conform to the general requirements of EN 932-5. 5.2 Ventilated drying oven, with forced circulation of
33、 adequate capacity. The oven shall be capable of being controlled at (110 5) C. 5.3 Balance, with an accuracy of 0,1 % of the mass of the test portion. 5.4 Heat source, capable of boiling the can and contents at 100 C for (36 1) h. 5.5 Steel cans, with watercooled lids. 5.6 Test sieves, conforming t
34、o EN 933-2. 5.7 Water, distilled or demineralized. 5.8 Moist cloth 5.9 Sawing machine 6 Sampling Sampling shall be carried out in accordance with EN 932-1. Page 6 EN 1367-3:2001 BSI 17 August 2004 7 Preparation of test portions 7.1 Test portion for the visual examination of a piece of basalt rock fo
35、r signs of “Sonnenbrand” For the determination of the presence of signs of “Sonnenbrand” the laboratory sample shall be taken from a quarry stock pile and shall consist of one rock piece, which shall be large enough to give a sawn surface equal to or greater than 0,005 m 2 . NOTE A piece with a mini
36、mum dimension of 75 mm should be sufficient. Cut the rock piece to give two sawn test portions, and mark each for identification. Wash each test portion and remove adherent particles by brushing. 7.2 Test portion for the determination of loss in mass of basalt aggregate after boiling Reduce the labo
37、ratory samples in accordance with EN 932-2. Remove the oversize and undersize by dry sieving in accordance with EN 933-1. Wash the sample and dry it to constant mass at (110 5) C and allow to cool. Weigh and record the test portion mass in grams as m 0 . The minimum mass of the test portion shall be
38、 as specified in Table 1. NOTE If it is intended to carry out strength tests, the test portion should correspond to the test portions needed for the determination of the loss in strength as specified in 7.3, allowing for some waste. Table 1 Minimum mass of test portion Aggregate size mm Mass of test
39、 portion g 4 to 8 8 to 16 16 to 32 1 000 2 000 4 000 7.3 Test portion for the determination of the strength loss of basalt aggregate after boiling Prepare two test portions from the same laboratory sample as specified in 5.2 of EN 1097-2:1998. NOTE If the impact test specified in EN 1097-2 is to be
40、used, at least six test specimens from the same laboratory sample as specified in 6.2 of EN 1097-2:1998 should be prepared. Page 7 EN 1367-3: 2001 BSI 17 August 2004 8 Procedure 8.1 Visual determination of signs of “Sonnenbrand” in a piece of basalt Place one of the two test portions in the steel ca
41、n and fill with distilled or demineralized water so that the test portion will remain covered during boiling, and cover with a lid. Bring the can and contents to boiling within 0,5 h, and maintain boiling for (36 1) h. During this period check by inspection that the test portion remains covered with
42、 water. Remove the warm test portion from the can and check for signs of “Sonnenbrand” during the drying period. NOTE At this stage make sure that adequate precautions are taken by personnel to avoid scalding, burns, etc. Lightly moisten the sawn surface with a moist cloth and as the sawn surface dr
43、ies again, examine for any of the following and record observations: a) formation of grey/white star shaped spots or radiating hairline cracks; b) formation of larger cracks; c) breakage of the test portion. NOTE 1 A comparison can be made between the test portion under test and the unboiled test po
44、rtion. NOTE 2 Several specimens from a number of pieces of basalt can be boiled in the can at the same time. 8.2 Determination of mass loss of basalt aggregate after boiling Place the test portion in the steel can and fill with water so that the specimen will remain covered during boiling, and cover
45、 with lid. Bring the can and contents to boiling within 0,5 h and maintain boiling for (36 1) h. Allow the can and contents to cool to ambient temperature, decant the water and transfer the test portion to suitable trays. Dry to constant mass at (110 5) C and allow to cool. Dry sieve the test portio
46、n on a sieve having an aperture of half the lower nominal size. Weigh the mass retained on the sieve in grams (m 1 ). 8.3 Determination of strength loss of basalt aggregate after boiling Boil one test portion and allow to cool and dry at (110 5) C to constant mass as specified in 8.2. Test both test
47、 portions in accordance with EN 1097-2 and record the strengths obtained on the boiled and unboiled portions as LA 1and LA 0respectively. NOTE If the impact test specified in EN 1097-2 is to be used, at least three test specimens from the same laboratory sample, as specified in 6.2 of EN 1097-2:1998
48、, should be boiled and the mean strength recorded as SZ 1 . The mean impact value of the three unboiled test specimens should be recorded as SZ 0 . Page 8 EN 1367-3:2001 BSI 17 August 2004 9 Calculation and expression of results 9.1 Percentage loss in mass of basalt aggregate Calculate the percentag
49、e loss in mass to the nearest 0,1 % in accordance with the following equation: 00 1 ) ( 0 1 0 1 = m m m Mwhere: M 1is the percentage loss in mass; m 0is the mass of the test portion before boiling, in grams; m 1is the mass of the fraction retained on the half size sieve after boiling, in grams. 9.2 Strength loss of basalt aggregate Calculate the difference, as a percentage, between the strength test results of the boil
