BS EN 1097-10-2014 Tests for mechanical and physical properties of aggregates Determination of water suction height《集料的机械和物理特性的试验 吸水高度的测定》.pdf

1、BSI Standards PublicationBS EN 1097-10:2014Tests for mechanical andphysical properties ofaggregatesPart 10: Determination of water suctionheightBS EN 1097-10:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1097-10:2014. It supersedes BS EN 1097-10:2002 whic

2、h is withdrawn.The UK participation in its preparation was entrusted to Technical Committee B/502, Aggregates.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Use

3、rs are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 80137 2ICS 91.100.15Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of

4、 the Standards Policy and Strategy Committee on 31 May 2014.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 1097-10:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1097-10 May 2014 ICS 91.100.15 Supersedes EN 1097-10:2002English Version Tests for mechanical a

5、nd physical properties of aggregates - Part 10: Determination of water suction height Essais pour dterminer les caractristiques mcaniques et physiques des granulats - Partie 10: Hauteur de succion deau Prhfverfahren fr mechanische und physikalische Eigenschaften von Gesteinskrnungen - Teil 10: Besti

6、mmung der Wassersaughhe This European Standard was approved by CEN on 24 February 2014. 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 list

7、s and bibliographical references concerning 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

8、the responsibility of a CEN member into 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 Yug

9、oslav Republic of Macedonia, France, Germany, 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 EUROPE

10、N DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1097-10:2014 EBS EN 1097-10:2014EN 1097-10:2014 (E) 2 Contents

11、Page Foreword 3 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 4 Principle 6 5 Materials . 6 5.1 Water, boiled and cooled before use . 6 5.2 Reagents . 6 6 Apparatus . 6 7 Preparation of test portions 9 8 Test procedure . 9 8.1 General 9 8.2 Determination of maximal hygroscopic moist

12、ure content 9 8.3 Determination of compacted dry bulk density . 10 8.4 Determination of water suction height 10 9 Test report 12 9.1 Mandatory data 12 9.2 Conditional data . 13 BS EN 1097-10:2014EN 1097-10:2014 (E) 3 Foreword This document (EN 1097-10:2014) has been prepared by Technical Committee C

13、EN/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 October 2014 and conflicting national standards shall be withdrawn at the latest by

14、 October 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. This document supersedes EN 1097-10:2002. This European Standard forms

15、part of a series of tests for mechanical and physical 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 geometrical properties of aggregates EN 1

16、367, Tests for thermal and weathering 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 1097 are: Part 1: Determination of the resistance to wear (micro-Deval) Part 2: Methods for the d

17、etermination of resistance to fragmentation Part 3: Determination of loose bulk density and voids Part 4: Determination of the voids 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

18、: Determination of the particle density of filler Pyknometer method Part 8: Determination of the polished stone value Part 9: Determination of the resistance to wear by abrasion from studded tyres Nordic test Part 11: Determination of compressibility and confined compressive strength of lightweight

19、aggregates The technical changes between this edition and the 2002 version are as follows: a) 6.3 and 6.4, minimum size of vessel and moisture container have been reduced; b) 6.13, tolerance on temperature stability has been broaden; BS EN 1097-10:2014EN 1097-10:2014 (E) 4 c) Clause 7, Table 2, mini

20、mum volume of test portion has been reduced; d) 8.4, Figure 2 has been redrawn and clarified; e) 8.2 to 8.4, units have been updated; f) Definition of constant moisture content has been clarified and appended to 8.4. According to the CEN/CENELEC Internal Regulations, the national standards organisat

21、ions 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, Italy, Latvia, Lithuania, Luxembourg, Malt

22、a, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1097-10:2014EN 1097-10:2014 (E) 5 1 Scope This European Standard specifies the reference method, used for type testing and in case of dispute, for determining the w

23、ater suction height of an aggregate in direct contact with a free water surface. For other purposes, in particular production control, other methods may be used, provided that an appropriate working relationship with the reference methods has been established. NOTE Capillary water uptake in an aggre

24、gate layer under the ground floor may cause moisture problems in the building. If the layer is thicker than the water suction height of the aggregate used, the layer is considered as a capillary barrier. 2 Normative references The following documents, in whole or in part, are normatively referenced

25、in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 932-2, Tests for general properties of aggregates - Part 2: Methods for reduc

26、ing laboratory samples EN 932-5, Tests for general properties of aggregates - Part 5: Common equipment and calibration EN 1097-5, Tests for mechanical and physical properties of aggregates - Part 5: Determination of the water content by drying in a ventilated oven 3 Terms and definitions For the pur

27、poses of this document, the following terms and definitions apply. 3.1 water suction height level to which the water raises in a layer of aggregate in direct contact with a free water surface 3.2 maximal hygroscopic moisture content moisture content of aggregates in a sealed container just below 100

28、 % relative humidity 3.3 aggregate size designation of aggregate in terms of lower (d) and upper (D) sieve sizes Note 1 to entry: This designation accepts the presence of some particles which will be retained on the upper sieve (oversize) and some which will pass the lower sieve (undersize). 3.4 con

29、stant mass mass determined after successive weighings at least 1 h apart not differing by more than 0,1 % Note 1 to entry: In many cases constant mass can be achieved after a test portion has been dried for a pre-determined period in a specified oven at (110 5) C. Test laboratories can determine the

30、 time required to achieve constant mass for specific types and sizes of sample dependent upon the drying capacity of the oven used. 3.5 test portion sample used as a whole in a single test BS EN 1097-10:2014EN 1097-10:2014 (E) 6 4 Principle A test portion of dry aggregate in a vertical tube is broug

31、ht into direct contact with a free water surface, allowing the aggregate to take up water by suction. When equilibrium is reached, the water suction height is determined from the moisture content variation within the test portion. NOTE 1 The water suction height may be affected by the relative humid

32、ity. For this reason, the hygroscopic moisture content is simultaneously determined and the largest effect is recorded as the water suction height. NOTE 2 The water suction height may be affected by the compacted dry bulk density. For this reason, the compacted dry bulk density is determined and rec

33、orded. 5 Materials 5.1 Water, boiled and cooled before use NOTE Fresh tap water and demineralized water are both suitable as long as they are free from any impurity. 5.2 Reagents Saturated potassium sulfate solution, prepared by dissolving (12 1) g of reagent grade potassium sulfate by stirring in (

34、100 1) g of demineralized water at (40 1) C. Allow the solution to cool to room temperature and store in a closed bottle. NOTE The potassium sulfate solution is used to avoid condensation while determining the maximal hygroscopic moisture content (6.4), as water drops from the condensation may soak

35、the test sample. 6 Apparatus 6.1 All apparatus, unless otherwise stated, shall conform to the general requirements of EN 932-5. 6.2 Tube, made of transparent material with a height of not less than 200 mm and a diameter as specified in Table 1. NOTE Aggregates with a large value of water suction hei

36、ght may require a longer tube. The lower end of the tube wall shall be fitted with at least four slots, ensuring free movement of water into the tube. An example of slot design is shown in Figure 1. The tube shall be glued in the centre of the vessel (6.3). Take care not to clog the slots. The width

37、 of the slots should be smaller than d to prevent particles to flow into the vessel. 6.3 Vessel, made of transparent material. The internal bottom area of the vessel shall be large enough to have a minimum distance of 50 mm between the edge of the vessel and the wall of the tube. The vessel is fitte

38、d with a needle made of non-corrosive material, to indicate a water level (10 1) mm above the base of the vessel, as shown in Figure 1. 6.4 Moisture container and close fitting lid, made preferably of transparent material, with an internal bottom area as specified in Table 1 and an internal depth of

39、 at least 60 mm. The container is fitted with a heat insulated cover or placed inside the test cabinet (see 6.13). NOTE Vessels and containers can be circular or rectangular. BS EN 1097-10:2014EN 1097-10:2014 (E) 7 Table 1 Minimum dimensions of tube and moisture container Upper aggregate size D mm M

40、inimum internal diameter of tube amm Minimum internal bottom area of moisture container bm2 8 10 16 20 32 125 125 140 140 170 0,04 0,04 0,04 0,05 0,08 aSee 6.2. bSee 6.4. 6.5 Glass basin, flat bottom crystallising type of 150 ml nominal capacity, to contain the potassium sulfate solution (see 5.2).

41、6.6 Balance, with an accuracy of 0,1 g for masses of 100 g or more and an accuracy of 0,01 g for masses of less than 100 g. 6.7 Plastic bag and rubber band, size appropriate to the diameter of the tube. 6.8 Wood stick (wooden dowel), with a diameter of approximately 0,25 X the diameter of the tube a

42、nd a height of approximately 500 mm, for packing of the material in the tube. 6.9 Plastic water bottle with spout, for water supply and level adjustment. 6.10 Ventilated oven, thermostatically controlled to maintain a temperature of (110 5) C. 6.11 Steel straight edge, for levelling the surface of t

43、he aggregate with the top of the tube. 6.12 Adhesive tape, to seal the moisture container. 6.13 Test cabinet, or similar controlled environment capable of maintaining a stable temperature ( 2,0 C) between 20,0 C and 25,0 C. BS EN 1097-10:2014EN 1097-10:2014 (E) 8 Dimensions in millimetres Key 1 plas

44、tic bag 4 water surface 7 vessel 2 rubber band 5 level needle 3 tube 6 slots (design in mm) Figure 1 Tube and vessel for determination of water suction height BS EN 1097-10:2014EN 1097-10:2014 (E) 9 7 Preparation of test portions The laboratory sample shall be reduced in accordance with EN 932-2 to

45、produce two test portions: one for determination of the maximal hygroscopic moisture content (8.2) and the other for determination of the compacted dry bulk density (8.3) and the water suction height (8.4). The volume of the test portions shall be as specified in Table 2. Dry the two test portions i

46、n the ventilated oven at (110 5) C to constant mass as specified in EN 1097-5. Table 2 Minimum volume of test portions Upper aggregate size D mm Minimum volume in litres Determination of maximal hygroscopic moisture content aDetermination of compacted dry bulk density and water suction height b8 10

47、16 20 32 0,25 0,25 0,25 0,5 1,0 3,0 3,0 3,5 3,5 5,0 aSee 8.2. bSee 8.3 and 8.4. 8 Test procedure 8.1 General Carry out the tests in the test cabinet maintained at the selected stable temperature specified in 6.13. To prevent condensation on the inner surface of the tube and container, shield the app

48、aratus from cold walls, cold windows, direct sunlight and draughts. 8.2 Determination of maximal hygroscopic moisture content Place the glass basin containing the prepared saturated potassium sulfate solution in the centre of the moisture container. Distribute the test portion evenly over the remain

49、ing area of the moisture container. Fit the cover and seal the cover to the container with adhesive tape. At the same time as the determination of water suction height (8.4) is complete, remove the test portion from the moisture container and weigh it (Mhyg). Dry the test portion in the ventilated oven at (110 5) C to constant mass as specified in EN 1097-5 and weigh, Mhygd. Calculate the maximal hygroscopic moisture content whyg, in percentage by dry mass, to one decimal place in accordance with the fo