1、 STD-BSI BS EN 1097-3-ENGL 1798 D Lb24bb7 0724422 O24 BRITISH STANDARD Tests for mechanical and physical properties of aggregates - Part 3: Determination of loose bulk density and voids The European Standard EN 1097-3:1998 has the status of a British Standard ICs 91.100.20 NO COPYING WITHOUT BSI PER
2、MISSION EXCEPT AS PERMITTED BY COPYRIGH LAW BS EN 1097-3: 1998 STD-BSI BS EN 1077-3-ENGL 1778 D Lb24bb7 0724423 TbO = AmdNo. BS EN 1097-3:1998 Date Textaffected National foreword This British Standard is the English language version of EN 109731998. It is included in a package of European Stanclards
3、 declared by CENRY: 154 and it will supersede ciause 6 of BS 812-21995 which wiii be withdrawn on 1999-12-01 if di the European Stanards included in the package are available. The K participation in its preparation was entrusted by Technical Committee B/502, Aggregates, to Subcommittee B/502/6, Test
4、 methods, which has the responsibility to: - aid enquirers to undersand the text; - present to the responsible European committee any enquiries on the - monitor related intemational and European developments and promulgate interpretation, or propmais for change, and keep the UK inkrests informed; th
5、em in the UK. 3 A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section
6、entitled “Internationai Standards Correspondence Index“, or by using the “Find“ facility of the ES1 Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contsact. Users of British Standards are responsible for their correct application. Com
7、pliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover. I This British Standard, having been prepared under the di
8、rection of the Sector Board for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 15 September 1998 O BSI 1998 ISBN O 580 30086 2 Amendments issued since publication * * v, STD-BSI BS EN 1077-3-ENGL 1778 = Lb24bb7 072Li1i24 7T7 D EUROPE
9、AN STANDARD NORME EUR0PEE”E EUROP- NOW EN 10973 April 1998 ICs 91.100.20 Descriptors: Aggregates, tests, mechanical properties, physical properties, determination, density (masholume), porosity English version ”s for mechanical and physical pmperties of agggaks- Part 3 Determination of loose bulk de
10、nsity and voids Essais pour dteminer les caractensb. * qua mcaniques et physiques des granW- Partie 3 Mthode pour la dtemiinaton de la masse volumique en vrac et de la porosit inkrgranulaire Werfahren fr mechanisch eundphysikalische Eigenschaften von Geskinskmungen - Teil3 Bestunm . ung von Schttoli
11、chte und Hohlraumgehalt This European Standard was approved by CEN on 25 February 1998. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Upto-date lists
12、and bibhographid references concerning such national standards may be obtained on application to the Central Secretariat 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 responsibil
13、ity of a CEN member into its own language and notified to the Centsal Secretariat has the same status as the official versions. CEN members are the national standards bodies of Aria, Beigium, Czech Republic, Denmark, Finland, Fkmce, Germanx Greece, Iceland, Ireland, Ita is the mass of the container
14、and test specimen, is the mass of the empty container, in is the capacity of the container, in litres. in kilograms; kilograms; Report the loose buk density pb as the mean of the three values rounded to the second decimal place for normal aggregaks, and to the third decimal place for lightweight agg
15、regates. The percentage of voids 2r is the volumehic proportion of voids in the container. It is calculated according to the following equation: U= =x1m PP where v pb pp is the percentage of voids; is the loose bulk density, in megagrams per cubic metre; is the oven dried or pre-dried particle densi
16、ty, in megagrams per cubic metre, as determined in accordance with prEN 1097-6 using a test portion taken from the same aborary sample. NOTE A statement on the precision of the test is given in annex C. 9 “kst report The test report shall make reference to this standard, stating: a) sample identific
17、ation, nominal size, and sample description; b)dateoftest; c) loose bulk density (the three values of the test specimens and the mean value); d) percentage of voids if relevant. O BSI 1998 * rn * Annex A (normative) Method for the determination of the apparent (bulk) density of filler in kerosene A.
18、l Principle A test portion consisting of a fixed mass of filler is dispersed in a volume of kerosene and allowed to settle. The settled volume of the test portion is measured and is used to dculak the apparent (bulk) density A.2 Apparatus A.2.1 Gmdmted ghs naeusurw cylinder wiut stqpq of 50 ml capac
19、ity with a mailest scale division of 1 ml, complying with Is0 4788. A.2.2 Balance, of capacity not less than 100 g, accurate to 0,Ol g. A.2.3 Vent.ilated drying oven, capable of maintaining a temperature of (i10 f 5) “C. A.2.4 Desiccator and desiccant. A.2.6 Redistiued h%rosene (paraflin oil), petro
20、leum distillate with a boiling range between 190 OC and 260 OC. NOTE The displacement liquid used in the method of testing density of cement, as specified in EN 1966, is suitable. A.3 Preparation of test specimens Reduce the laboratory sample in accordance with the procedures specified in prEN 9322
21、to produce a test portion of sufficient mass to give five test specimens. Dry the test portion of filler at a temperature of (110 f 5) OC for at least 4 h. Cool to room temperature in the desiccator. Weigh out three test specimens of filler, each with a mass of about 10 g. Record the mass m of each
22、test specimen to the nearest 0,l g. A.4 Procedure Put the first test specimen and about 25 ml of kerosene into a measuring cylinder, then stopper and shake until the filler is completely wetted. Add more kerosene to the cylinder so that the level is about 40 mm from the top. Stopper and shake again.
23、 In order to ensure that the filier is in complete suspension in the kerosene, immediately after the second shaking, invert the cylinder and keep it in an inverted position whilst the air bubble travels the length of the cylinder. Immediately return the cylinder to the upright position and hold it s
24、till unti the air bubble returns to the top. Repeat this cycle of operations a further four times in rapid succession, then immediately stand the cylinder on a vibration-free surface. if any particles of filier stick to the side of the cylinder above the level of the kerosene, casefully wash them ba
25、ck into the liquid using a small additional quantity of kerosene. Leave the cyhder undisturbed for at least 6 h before reading and recording the bulk volume of the filier, y to the nearest miiliiitre. Repeat the procedure described above for the second and third test specimens. Page 5 EN 10973.1998
26、A.6 Calculation and expression of results For each test specimen, calculate the apparent (bulk) density to the nearest 0,Ol Mg/m3 in accordance with the following equation: apparent (bulk) density = na/v Mg/m3 where: V is the buk volume as determined in A.4, in m is the mass of the test portion, in
27、grams. millilitres; Calculate the mean of the three values of apparent (buk) density, determined using the above equation, to the nearest 0,Ol Mm3. if any of the individual results Mer by more than 0,05 Mgh3 hm the mean value, discard that inchidual result and determine the apparent (bulk) density o
28、f two further test specimens taken from the same test portion. A.6 Test report Report the mean value of the three or more results as the apparent (bulk) density of er in kerosene, to the nearest 0,l Mghn3. The report shall affirm that the apparent (bulk) density of filler in kerosene was determined
29、in accordance with this European Stanwd. The test report shall contain at least the following information: a) sample identification and sample description; b) the apparent (bulk) density of filler in kerosene. NOTE A statement on the precision of the test is given in annex C. Annex B (normative) Cal
30、ibration of container B.1 The capacity of the container shaii be calibrated by determining the mass of water required to fill it. B.2 Firstly, weigh the w, clean and empty container with the glass plate. Fll with water at (20 f 2) OC and cover with the glass piate, removing air bubbles and excess wa
31、ter. Dry the outside of the container and weigh it. Determine the net mass of the water to 0,1% Obtain the capacity Vof the container in litres by expressing the net mass of the water in kilograms. Annex C (informative) Precision C.l Loose bulk density in the oven dry condition A precision experimen
32、t, using normal weight aggregates, was carried out in 1989 under the auspices of the British Standards Institution to ascertajn estimates of repeatability r and reproducibility R2 for loose bulk density in the oven dry condition. The experiment involved thirteen laboratories and the results are give
33、n in Wle C.1. O BSI 1998 STD-BSI BS EN 1077-3-ENGL 1798 = Lb2LibbS 072LiLi27 q87 6 Aggregate type Fine aggregate (iimestone fines, sand) Coarse aggregate Page 6 EN 10973:1998 Repeatability T Reproducibility Mg/m3 Mg/m3 RZ 0,032 0,165 0,019 0,079 Permian limestone C.2 Apparent (buk) density of filler
34、s in kerosene A precision experiment was carried out in 19W5 under the auspices of the British Standards institution. The experiment involved testing two types of ground limestone lier at fifteen laboratories. The results are given in lble C.2. 0,93 0,05 O,% Table C.2 - Precision estimates of appare
35、nt (bulk) density of fdlers in kerosene Filler type Average Repeatabili Reproducibility density I Mg/m3 1 Mim3 7 M2m3 I Carboniferous I 0,O 10,03 I 0,13 limestone I Annex D (inforxmtive) Other conditions of bulk density It may be useful to determine bulk density in other than the loose conition as s
36、pecified in this European standard. D.l Compacted dry bulk density The method of compaction should be indicated when reporting the results. D.2 Loose bulk density with damp aggregates The moisture content should be stated when reporting the resuts. Annex E (informative) Bibliography EN 19661989, Met
37、hwls of testing cement - Part 6: Determination of fineness. DIN 52 110, Mfung von NacurStein und Gesi%n.sMungen. Bestimmung der Schttdichte von NBN B 11-206:1981, Norme Beige - Belgische Norm. Essais des gmnuats pour bton: terminatwn de ia masse volumique en vmc. Proeven op gmnu.hten mm beton, bepal
38、ing van cle volume-massa van het iosgestort gmnat. NF P 18309:1982, Granulats d?argzle ou de schiste -anss f- en four rotatg destinsz la confection ak bton. Is0 67821982, Aggregates fm cancrete - Determination of uik density. BS 812-2 1995, Testing aggregates - Part 2. Methods for determinacion of p
39、hysical pmperth. haft BS 812-108, Testing aggregates - Part 108. Method for eterminatwn of buuc density, optimum moisture content, voids an Wng. Gesi%WMUWrn. O BSI 1998 BS EN 1097-3:1998 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution BSI is the independent national body
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