1、January 2008DEUTSCHE NORM English price group 10No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 91.100.15!$K:C“1402332
2、www.din.deDDIN EN 14617-8Agglomerated stone Test methods Part 8: Determination of resistance to fixing (dowel hole)English version of DIN EN 14617-8:2008-01Knstlich hergestellter Stein Prfverfahren Teil 8: Bestimmung der Bestndigkeit gegen Befestigungen (Ankerdornloch)Englische Fassung DIN EN 14617-
3、8:2008-01www.beuth.deDocument comprises 17 pagesDIN EN 14617-8:2008-01 2 National foreword This standard has been prepared by CEN/TC 246 “Natural stones” (Secretariat: UNI, Italy). EN 14617-8 falls in the domain of the Normenausschuss Materialprfung (Materials Testing Standards Committee). However,
4、at present a DIN committee does not exist for this standard since the parties concerned have not shown any interest in work on the subject. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14617-8 October 2007 ICS 91.100.15 English Version Agglomerated stone - Test methods - Part 8: Determinatio
5、n of resistance to fixing (dowel hole) Pierre agglomre - Mthodes dessai - Partie 8: Dtermination de la rsistance aux attaches (trous pour broches) Knstlich hergestellter Stein - Prfverfahren - Teil 8: Bestimmung der Bestndigkeit gegen Befestigungen (Ankerdornloch) This European Standard was approved
6、 by CEN on 26 August 2007. 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 sta
7、ndards 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
8、 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,
9、 Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of explo
10、itation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14617-8:2007: EEN 14617-8:2007 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Principle4 4 Symbols 4 5 Apparatus .4 6 Preparation of the specimens 5 6.1 Sampling.5 6.2 Test specimens5 6.
11、2.1 General5 6.2.2 Tests5 6.2.3 Number of specimens .5 6.2.4 Surface finish of the specimens.5 6.2.5 Dimensions of the specimens5 6.2.6 Location of the holes.6 6.2.7 Dimensions and tolerances of the holes.6 6.2.8 Drilling the holes6 6.2.9 Conditioning.6 6.2.10 Measuring d and d16 6.3 Clamping device
12、 7 7 Dowels 9 7.1 Dimensions and tolerances 9 7.2 Material .9 7.3 Placing the dowels.9 8 Test procedure.9 9 Expression of the results10 10 Test report 10 Annex A (normative) Statistical evaluation of the test results.12 A.1 Scope 12 A.2 Symbols and definitions .12 A.3 Statistical evaluation of test
13、results 13 EN 14617-8:2007 (E) 3 Foreword This document (EN 14617-8:2007) has been prepared by Technical Committee CEN/TC 246 “Natural stones”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical text
14、 or by endorsement, at the latest by April 2008, and conflicting national standards shall be withdrawn at the latest by April 2008. Test methods for agglomerated stones consist of the following: EN 14617-1, Agglomerated stone Test methods Part 1: Determination of apparent density and water absorptio
15、n EN 14617-2, Agglomerated stone Test methods Part 2: Determination of flexural strength (bending) EN 14617-4, Agglomerated stone Test methods Part 4: Determination of the abrasion resistance EN 14617-5, Agglomerated stone Test methods Part 5: Determination of freeze and thaw resistance EN 14617-6,
16、Agglomerated stone Test methods Part 6: Determination of thermal shock resistance EN 14617-8, Agglomerated stone Test methods Part 8: Determination of resistance to fixing (dowel hole) EN 14617-9, Agglomerated stone Test methods Part 9: Determination of impact resistance EN 14617-10, Agglomerated st
17、one Test methods Part 10: Determination of chemical resistance EN 14617-11, Agglomerated stone Test methods Part 11: Determination of linear thermal expansion coefficient EN 14617-12, Agglomerated stone Test methods Part 12: Determination of dimensional stability EN 14617-13, Agglomerated stone Test
18、 methods Part 13: Determination of electrical resistivity EN 14617-15, Agglomerated stone Test methods Part 15: Determination of compressive strength EN 14617-16, Agglomerated stone Test methods Part 16: Determination of dimensions, geometric characteristics and surface quality of modular tiles No e
19、xisting standard is superseded. 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, Hu
20、ngary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 14617-8:2007 (E) 4 1 Scope This European Standard specifies a test method to determine the breaking load at the
21、dowel hole of agglomerated stones slabs used for cladding or lining in buildings. 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
22、referenced document (including any amendments) applies. EN 197-1, Cement Part 1: Composition, specifications and conformity criteria for common cements EN 10088-1, Stainless steels Part 1: List of stainless steels EN 12390-4, Testing hardened concrete Part 4: Compressive strength Specification for t
23、esting machines 3 Principle This test consists of applying a force in a direction perpendicular to the face of a specimen through a dowel previously placed in a hole drilled in one of its sides and measuring the breaking load of the specimen. 4 Symbols For the purposes of this document, the followin
24、g symbols apply. d is the thickness of the test specimen, in millimetres 1dis the distance from the hole wall to the face where fracture occurs, in millimetres Abis the maximum distance of the centre of the hole to the fracture edge on the face, in millimetres F is the individual breaking load, in n
25、ewtons 1dis the mean value of d, in millimetres F is the mean value of F, in newtons Ab is the mean value of Ab , in millimetres 5 Apparatus 5.1 A balance capable of weighing the specimens with an accuracy of 0,1 % of their mass. 5.2 A ventilated oven capable of maintaining a temperature of (70 5) C
26、. 5.3 A linear measuring device with an accuracy of 0,05 mm. 5.4 A rotary drilling machine equipped with a diamond or tungsten carbide tipped bit. 5.5 A testing machine of appropriate force in accordance with EN 12390-4 and calibrated according to this European Standard. EN 14617-8:2007 (E) 5 5.6 A
27、clamping device consisting of two metal plates having the shape and sizes shown in Figure 1. 5.7 A device for applying loads perpendicular to the axis of the dowel (see Figure 2). 5.8 A room or chamber in which the temperature of the air can be maintained at (20 5) C. 6 Preparation of the specimens
28、6.1 Sampling The sampling is not the responsibility of the test laboratory except where specially requested. 6.2 Test specimens 6.2.1 General The test can be carried out as an identification test or as a technological or performance test. 6.2.2 Tests 6.2.2.1 Identification test This test is performe
29、d only for comparison sake on samples of standard thickness (30 3) mm, which might not be the thickness of the actual agglomerated stone slabs or cut to size products selected for the application. 6.2.2.2 Technological or performance test This test is performed on samples of the actual thickness of
30、the agglomerated stone slabs or cut to size products selected for the application. 6.2.3 Number of specimens 12 tests shall be made on 3 specimens. 6.2.4 Surface finish of the specimens a) identification test The surface finish on the faces and sides of the specimens shall be sawn, honed or polished
31、. b) technological test The surface finish on the faces and sides of the specimens shall be carried out according to the application (for example sawn, honed, polished, sanded, rubbed, flamed, bush hammered, riven). 6.2.5 Dimensions of the specimens a) identification test The specimens are square sl
32、abs with faces (200 1) mm and a thickness of (30 3) mm. The permissible deviation on the squareness is a maximum of 2 mm. b) technology test The specimens are square slabs with faces (200 1) mm and a thickness (d 0,1 d) mm. EN 14617-8:2007 (E) 6 6.2.6 Location of the holes A hole is wet drilled perp
33、endicularly in each of the four sides in the following manner: a) identification test The centre of the hole shall be situated between 98 mm and 102 mm from the other sides, measured to the nearest 0,5 mm. The thickness of stone between the edge of the hole and two faces shall be (10 2,0) mm, measur
34、ed to the nearest 0,5 mm. b) technological test The centre of the hole shall be situated in the middle of the specimens length. The thickness of stone between the edge of the hole and the face to be tested shall be according to the application, measured to the nearest 0,5 mm. 6.2.7 Dimensions and to
35、lerances of the holes a) identification test The diameter of the holes shall be (10 0,5) mm. The depth of the holes shall be (30 2) mm. b) technological test The diameter of the holes shall be in accordance with the requirement of the application. The depth of the hole shall be (30 2) mm. 6.2.8 Dril
36、ling the holes The holes shall be wet drilled with a diamond or tungsten carbide tipped drill bit without hammering. 6.2.9 Conditioning The specimens shall be dried to constant mass at (70 5) C in a ventilated oven after the drilling of the holes but before the dowels are fixed in place. Constant ma
37、ss is reached when the difference between two weightings carried out (24 2) h apart is less then 0,1 % of the first of the two masses. After drying and prior to placing the dowels the specimen shall be stored at (20 5) C until the thermal equilibrium is reached. 6.2.10 Measuring d and d1After condit
38、ioning the thickness (d) and the distance from the edge of each hole to the lower face of the specimen in the direction of the force (d1) shall be measured. EN 14617-8:2007 (E) 7 6.3 Clamping device a) General view Dimensions in millimetres b) Detail of a plate suitable for tests on specimens having
39、 dimensions of 200 mm 200 mm Key 1 specimen 2 dowel 3 metal plate F force applied on the specimen L length of the specimen t thickness of the metal plate Figure 1 Clamping device to hold the specimen in place EN 14617-8:2007 (E) 8 Dimensions in millimetres Key 1 specimen 2 dowel 3 device for applyin
40、g load F force applied on the specimen Figure 2 Device for applying loads perpendicular to the axis of the dowel Figure 3 Test arrangement for a specimen EN 14617-8:2007 (E) 9 7 Dowels 7.1 Dimensions and tolerances a) identification test The diameter of the dowels shall be (6,0 0,1) mm. The length o
41、f the dowel shall be 50 mm. b) technological test The diameter of the dowels shall be in accordance with the required use. The length of the dowel shall be 50 mm. 7.2 Material The dowels shall be made of stainless steel type 1.4571 according to EN 10088-1. 7.3 Placing the dowels After the specimens
42、have reached room temperature (20 5) C the dowels are fixed in the holes. Place one of the sides of each specimen in an upper horizontal position. Place the dowel vertically and centrally in the hole. Fix the dowel in the hole for a length of (25 1) mm using mortar prepared with cement CEM I 52,5 R
43、in accordance with EN 197-1 and a water/cement ratio of (0,6 0,1) by mass. Wait at least one hour and then repeat the same procedure for the other sides of the specimen that are to be tested. The specimens shall then be stored at (20 5) C for a minimum of 48 h prior to testing. 8 Test procedure The
44、specimen is clamped between the two metal plates of the clamping device on 60 % of specimen length (see Figure 1). The load is exerted in a direction perpendicular to the axis of the dowel at a maximum distance of 2 mm from the edge of the specimen by means of the system shown in Figure 2. The load
45、is increased uniformly at a rate of (50 5) N/s until the specimen breaks. The breaking load is recorded to the nearest 50 N. If the dowel bends then the test shall be repeated with a larger diameter dowel and a new specimen. After the specimen has failed the maximum distance from the centre of the h
46、ole to the fracture edge (bA) shall be measured (Figure 4). EN 14617-8:2007 (E) 10 Key d thickness of the test specimen d1distance from the hole to the face in the direction of the force bAmaximum distance of the centre of the hole to the fractures edge Figure 4 Dowel hole failure 9 Expression of th
47、e results For each tested series the following mean values shall be calculated from the individual results recorded for each test: a) mean value of the distance from the hole to the face where the fracture occurs (d1) expressed in millimetres to the nearest 1,0 mm; b) maximum distance from the centr
48、e of the hole to the edge of the fracture (bA) expressed in millimetres to the nearest 1,0 mm; c) mean value of the breaking load (F) expressed in newtons to the nearest 50 N. 10 Test report The test report shall contain the following information: a) unique identification number for the report; b) n
49、umber, title and date of issue of this European standard; c) name and address of the test laboratory and the address of where the test was carried out if different from the test laboratory; d) name and address of the client; e) surface finish of the specimens (if relevant to the test); f) date of delivery of the samples or of the specimens; g) date when the specimens were prepared (if relevant) and the date of testing; h
