DIN EN 1097-11-2013 Tests for mechanical and physical properties of aggregates - Part 11 Determination of compressibility and confined compressive strength of lightweight aggregate.pdf

1、November 2013 Translation by DIN-Sprachendienst.English price group 9No part of this translation 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).IC

2、S 91.100.15!%*,s“2070980www.din.deDDIN EN 1097-11Tests for mechanical and physical properties of aggregates Part 11: Determination of compressibility and confined compressivestrength of lightweight aggregates;English version EN 1097-11:2013,English translation of DIN EN 1097-11:2013-11Prfverfahren f

3、r mechanische und physikalische Eigenschaften vonGesteinskrnungen Teil 11: Bestimmung der Verdichtbarkeit und Druckfestigkeit bei behinderter Querdehnungvon leichten Gesteinskrnungen;Englische Fassung EN 1097-11:2013,Englische bersetzung von DIN EN 1097-11:2013-11Essais pour dterminer les caractrist

4、iques mcaniques et physiques des granulats Partie 11: Dtermination de la compressibilit et de la rsistance la compressiontriaxiale des granulats lgers;Version anglaise EN 1097-11:2013,Traduction anglaise de DIN EN 1097-11:2013-11www.beuth.deIn case of doubt, the German-language original shall be con

5、sidered authoritative.Document comprises 15 pages 10.13 DIN EN 1097-11:2013-11 2 A comma is used as the decimal marker. National foreword This document (EN 1097-11:2013) has been prepared by Technical Committee CEN/TC 154 “Aggregates” (Secretariat: BSI, United Kingdom). The responsible German body i

6、nvolved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-03-13 AA Gemeinschaftsarbeits-ausschuss NA 062/FGSV: Gesteinskrnungen; Prfverfahren, Petrographie, Probenahme und Przision. DIN EN 1097 consists of the following parts,

7、 under the general title Tests for mechanical and physical properties of aggregates: Part 1: Determination of the resistance to wear (micro-Deval) Part 2: Methods for the determination of resistance to fragmentation Part 3: Determination of loose bulk density and voids Part 4: Determination of the v

8、oids of dry compacted filler Part 5: Determination of the water content by drying in a ventilated oven Part 6: Determination of particle density and water absorption Part 7: Determination of the particle density of filler Pyknometer method Part 8: Determination of the polished stone value Part 9: De

9、termination of the resistance to wear by abrasion from studded tyres Nordic test Part 10: Determination of the water suction height Part 11: Determination of compressibility and confined compressive strength of lightweight aggregates EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1097-11 July

10、2013 ICS 91.100.15 English Version Tests for mechanical and physical properties of aggregates - Part 11: Determination of compressibility and confined compressive strength of lightweight aggregates Essais pour dterminer les caractristiques mcaniques et physiques des granulats - Partie 11: Dterminati

11、on de la compressibilit et de la rsistance la compression triaxiale des granulats lgers Prfverfahren fr mechanische und physikalische Eigenschaften von Gesteinskrnungen - Teil 11: Bestimmung der Verdichtbarkeit und Druckfestigkeit bei behinderter Querdehnung von leichten GesteinskrnungenThis Europea

12、n Standard was approved by CEN on 14 June 2013. 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 concern

13、ing such national standards may be obtained on application to the CEN-CENELEC 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

14、its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Ger

15、many, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE F

16、R NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1097-11:2013: EEN 1097-11:2013 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and defini

17、tions .4 4 Principle 4 5 Apparatus .4 6 Preparation of test specimens .6 7 Procedure .6 7.1 Measurement of height h0.6 7.2 Filling of the container 6 7.3 Compressibility 6 7.4 Load and deformation measurements 7 8 Calculation and expression of results .7 8.1 Bulk density 7 8.2 Compressibility 8 8.3

18、Confined compressive stressdeformation curve .8 8.4 Confined compressive strength .9 9 Test report . 10 9.1 Required data 10 9.2 Optional data . 11 Annex A (informative) Precision . 12 Bibliography . 13 DIN EN 1097-11:2013-11 EN 1097-11:2013 (E) 3 Foreword This document (EN 1097-11:2013) has been pr

19、epared 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 January 2014, and conflicting national standards sha

20、ll be withdrawn at the latest by January 2014. 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. According to the CEN-CENELEC Internal R

21、egulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland

22、, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 1097-11:2013-11 EN 1097-11:2013 (E) 4 1 Scope This European Standard specifies the reference method used for type testi

23、ng, and in case of dispute, for determining the compressibility and confined compressive strength of lightweight aggregates (LWA). For other purposes, in particular factory production control, other methods may be used provided that an appropriate working relationship with the reference method has b

24、een established. The test is applicable to LWA passing the 32 mm sieve. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated refere

25、nces, the latest edition of the referenced document (including any amendments) applies. 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 1097-5, Tests

26、for mechanical and physical properties of aggregates Part 5: Determination of the water content by drying in a ventilated oven prEN 13055:2012, Lightweight aggregates for concrete, mortar, grout, bituminous mixtures, surface treatments and for unbound and bound applications 3 Terms and definitions F

27、or the purpose of this document, the terms and definitions given in prEN 13055:2012 and the following apply. 3.1 bulk density mass of loose filled or compacted aggregates divided by the part of the volume of the container that they occupy Note 1 to entry: The measurement of this bulk density is diff

28、erent from the one defined in EN 1097-3. 3.2 test specimen sample used in a single determination when a test method requires more than one determination of a property 4 Principle First, a test specimen is placed in a steel container and compacted by vibration for the purpose of determining the compr

29、essibility and bulk densities before and after vibration. Second, the steel container filled with this test specimen is subjected to a compression test with a constant loading rate until a given percentage of deformation is reached. During this second step, the load and displacement are continuously

30、 recorded in order to determine the confined compressive stressdeformation curve and to calculate the confined compressive strength. 5 Apparatus Unless otherwise stated, all apparatus shall conform to the general requirements of EN 932-5. 5.1 Ventilated oven, thermostatically controlled to maintain

31、a temperature of (110 5) C. 5.2 Polyethylene bags, of suitable sizes. DIN EN 1097-11:2013-11 EN 1097-11:2013 (E) 5 5.3 Balance, of adequate capacity with an actual scale interval of 0,1 g. 5.4 Cylindrical test container made of stainless steel, with an internal diameter and height of (200 0,5) mm. M

32、inimum thickness of the cylinder shall be 7,5 mm (see Figure 1). The inside of container shall be free of protrusions resulting for example from welding. Dimensions in millimetres Key 1 load cell 5 cylindrical test container 2 spherical seating 6 removable extension 3 load distribution steel plate 7

33、 hydraulic press 4 test specimen A, B dial gauges Figure 1 Example of test apparatus 5.5 Vibrating table, capable of vibrating the steel container vertically with a frequency of (50 2) Hz and an amplitude (0,50 0,10) mm. The steel container should be tightened to the vibration table if a free steel

34、container causes unstable amplitude. DIN EN 1097-11:2013-11 EN 1097-11:2013 (E) 6 5.6 Removable extension, that tightly fits on top of the cylindrical container, acting as a guide for the load distribution steel plate (5.7). Minimum height of the extension shall be 65 mm (see Figure 1). 5.7 Load dis

35、tribution steel plate, with a mass of (12,1 0,2) kg, diameter (199 0,5) mm and thickness (50 0,5) mm (see Figure 1). The steel plate should have a diameter at least 0,5 mm smaller than the container inside diameter. 5.8 Spherical seating or any other appropriate device to ensure an even distribution

36、 of the load. 5.9 Dial gauges, with an actual scale interval of 0,02 mm. 5.10 Slide calliper, with an actual scale interval of 0,1 mm. 5.11 Hydraulic press, or similar device capable to apply a continuous increase in load of (0,060 0,002) kN/s. 5.12 A monitoring system, such as a computer with an ac

37、quisition unit, capable of monitoring the load applied by the hydraulic press and recording both the load and the displacements at a minimum frequency of 10 Hz. 6 Preparation of test specimens Prepare three test specimens of volume 8 l each according to EN 932-2. Dry the test specimens at (110 5) C

38、to constant mass according to EN 1097-5. Allow to cool to ambient temperature. In case moist materials are tested, the moisture content shall be recorded. 7 Procedure 7.1 Measurement of height h0Insert the steel plate into the empty container so that it lies on the bottom. Tightly fit the extension

39、on top of the container. Measure the distance between the top of the extension and the steel plate, h0, using the slide calliper (see Figure 2). Remove the extension and steel plate from the container. NOTE Height h0does not need to be determined each time a test is performed. 7.2 Filling of the con

40、tainer Weigh and record the mass of the container, M0. Place the first test specimen in a plastic bag. Then place the opening of the bag in the bottom of the test container. Slowly lift the bag and fill the container with the test specimen. Level the surface with a straight edge taking care not to c

41、ompact it. Weigh the container with the test specimen, M1. Calculate the mass of the test specimen, M2= M1 M0. 7.3 Compressibility Place the filled container on the vibrating table and tighten it to the table. Tightly fit the extension on top of the container. Place the load distribution steel plate

42、 on the surface of the test specimen and measure the distance between the top of the extension and the steel plate, h1, using the slide calliper (see Figure 2). Vibrate the test specimen for (180 5) s and measure the distance between the top of the extension and the steel plate, h2, using the slide

43、calliper. DIN EN 1097-11:2013-11 EN 1097-11:2013 (E) 7 Dimensions in millimetres Key h0distance between the top of the extension and the steel plate at the bottom of the empty container h1distance before vibration between the top of the extension and the steel plate h2distance after vibration betwee

44、n the top of the extension and the steel plate Figure 2 Height measurements to be carried out before and after vibration 7.4 Load and deformation measurements Place the filled container with its extension and steel plate inside the press and zero the dial gauges. Apply the load, F, continuously at a

45、 rate of (0,060 0,002) kN/s. Increase the load until the displacement, , reaches at least 10 % of the height after vibration, h0 h2. Record the displacement continuously as the mean value of a minimum of two gauges and record the load, F. Repeat 7.2 to 7.4 with the remaining test specimens. 8 Calcul

46、ation and expression of results 8.1 Bulk density For each test specimen, calculate the bulk densities before vibration, 0, and after vibration, 1, in accordance with the following formulae: 6102010)(=AhhM(1) and 6202110)(=AhhM(2) where M2is the mass of the test specimen, in kilograms; A is the area

47、of the load distributed steel plate, in square millimetres; h0is the distance between the top of the extension and the steel plate at the bottom of the empty container, in millimetres; DIN EN 1097-11:2013-11 EN 1097-11:2013 (E) 8 h1is the distance before vibration between the top of the extension an

48、d the steel plate, in millimetres; h2is the distance after vibration between the top of the extension and the steel plate, in millimetres. The bulk density before and after vibration, expressed in megagrams per cubic metres, shall be stated to three decimal places. Calculate and report the mean bulk density of the three test specimens before vibration to two decimal places. Calculate and report the mean bulk density of the three test specimens afte