1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58ICS 81.080Refractory mortars Part 5: Determination of grain size distribution (sieve analysis)BRITI
2、SH STANDARDBS ISO 13765-5:2004BS ISO 13765-5:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 10 Febuary 2006 BSI 10 February 2006ISBN 0 580 47706 1Cross-referencesThe British Standards which implement international publications referred t
3、o 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 purport to include all the necessary provisions o
4、f a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, pages 1 to 5
5、 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsA list of organizations represented on this committee can be obtained on request to its secretary. present to the responsible int
6、ernational/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.National forewordThis British Standard reproduces verbatim ISO 13765-5:2004 and implements
7、 it as the UK national standard. Together with BS ISO 13765-1, BS ISO 13765-2, BS ISO 13765-3, BS ISO 13765-4 and BS ISO 13765-6 it supersedes BS 1902-11:1991 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee RPI/1, Refractories, which has the responsibi
8、lity to: aid enquirers to understand the text;INTERNATIONALSTANDARDISO13765-5First edition2004-06-01Reference numberISO 13765-5:2004(E)Refractory mortars Part 5:Determination of grain size distribution (sieve analysis)Mortiers rfractaires Partie 5: Dtermination de la rpartition granulomtrique (analy
9、se par tamisage)BS ISO 13765-5:2004iiiiiForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies(ISO member bodies). The work of preparing International Standards is normally carried out through ISOtechnical committees. Each member body
10、interested in a subject for which a technical committee has beenestablished has the right to be represented on that committee. International organizations, governmental andnon-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the InternationalElectrotechnic
11、al Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standardsadopted by the tec
12、hnical committees are circulated to the member bodies for voting. Publication as anInternational Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patentrights. ISO sh
13、all not be held responsible for identifying any or all such patent rights.ISO 13765-5 was prepared by Technical Committee ISO/TC 33, Refractories.ISO 13765 consists of the following parts, under the general title Refractory mortars: Part 1: Determination of consistency using the penetrating cone met
14、hod Part 2: Determination of consistency using the reciprocating flow table method Part 3: Determination of joint stability Part 4: Determination of flexural bonding strength Part 5: Determination of grain size distribution (sieve analysis) Part 6: Determination of moisture content of ready-mixed mo
15、rtarsBS ISO 13765-5:2004blank1Refractory mortars Part 5:Determination of grain size distribution (sieve analysis)1ScopeThis part of ISO 13765 describes a method for determining the grain size distribution of refractory mortars bysieve analysis.2 Normative referencesThe following referenced documents
16、 are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenced document(including any amendments) applies.ISO 565, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet
17、Nominal sizes ofopeningsISO 8656-1, Refractory products Sampling of raw materials and unshaped products Part 1: SamplingschemeISO 13765-6, Refractory mortars Part 6: Determination of moisture content of ready-mixed mortars3 Terms and definitionsFor the purposes of this document, the following terms
18、and definitions apply.3.1 grain size distributionmass fraction, as a percentage, of each grain size4 PrincipleThe material is passed through a series of sieves of progressively decreasing aperture, so that it is divided intofractions that are defined by the apertures of the sieves used.Grain size di
19、stributions of dry refractory mortars can be determined by either dry or wet test methods, the lattergiving more reproducible results.The grain size distribution of ready-mixed mortars should be determined by the wet test method and ofchemically bonded mortars by the dry test method.5 Apparatus5.1 S
20、tandard sieves and receiver, diameter conforming to the requirements of ISO 565.5.2 Sieve brush.200 mmBS ISO 13765-5:200425.3 Balance, capable of weighing to the nearest .5.4 Electrical drying oven, fitted with a temperature controller, capable of operating at .5.5 Sieve shaking device, capable of h
21、olding at least five standard sieves at the same time.6 SamplingFor dry mortar, sample the mortar in accordance with ISO 8656-1 or as agreed between parties. Reduce thesample to by quartering or with a riffle sampler.Sample ready-mixed mortars by emptying the entire contents of the container in whic
22、h the mortar is suppliedinto another container of larger capacity and mixing thoroughly. It is important that any supernatant liquid not bediscarded. Ensure that a representative sample of the wet mixture is obtained.7 Procedure7.1 GeneralAnalyse each sample in duplicate.Ensure that the sieves are c
23、lean and dry before use.7.2 Dry sieve analysisTake a sample of at least , dry in an oven at to constant mass. Allow to cool to roomtemperature in a desiccator and weigh to the nearest . Record the mass .Place the series of sieves on the shaking device, with the coarsest at the top and the finest and
24、 the receiver atthe bottom.Place the sample on the top sieve and operate the sieve shaking device for . If necessary, for examplewhen very fine powders adhere to the upper screen, the sample can be lightly brushed over the sieve to assistthe transfer of screenable material onto the next sieve.Remove
25、 the sieves from the shaking device, carefully separate and, one at a time, empty the contents of thesieves onto separate pieces of clean paper.Weigh the material collected on each sieve and in the receiver to the nearest . Record the mass foreach fraction, where denotes the sieve size.7.3 Wet sieve
26、 analysis of dry mortarWeigh a sample of at least , in a clean, dry evaporating dish (or suitable glass dish), spreading the sampleevenly within the dish. Dry in an oven at until constant mass is attained, i.e. until two successiveweighings made apart and after a minimum of in the oven do not differ
27、 by more than or .Allow to cool to room temperature in a desiccator and weigh to the nearest . Record the mass as .Immerse the sample in a sufficient amount of water to ensure that the fines are completely separated from thecoarse particles and do not ball together. Place the sample on the finest si
28、eve and wash with water, using arubber tube attached to a tap, until the water running through the sieve is clear.NOTE It might be necessary to disperse the sample of mortar in a volume of water using mechanical agitation prior towashing through the sieve.0,1 g110C 5C5kg50 g 110C 5C0,1 g m115 min0,1
29、 g mRR50 g110C 5C10 min 2 h 0,2 g 0,5 %0,1 g m1BS ISO 13765-5:20043After washing, transfer all the material retained on the sieve to an evaporating dish. Dry the dish and contentsat for or until constant weight is achieved. Remove the sample from the dish and weigh to thenearest . Record the mass as
30、 .Place the series of sieves on the shaking device, with the coarsest at the top and the finest and the receiver atthe bottom. Place the sample on the top sieve and operate the shaking device for . If necessary, thesample can be lightly brushed over the sieve to assist the transfer of screenable mat
31、erial onto the next sieve.Remove the sieves from the shaking device, carefully separate and, one at a time, empty the contents of thesieves onto separate pieces of clean paper.Weigh the material collected on each sieve to . Record the mass as for each fraction, where denotes the sieve size.7.4 Wet s
32、ieve analysis of ready-mixed mortarsTake a sample in duplicate, each at least , and weigh to . Record the mass as . Use one sample fordetermining the percentage moisture content of the mortar, , in accordance with ISO 13765-6, and the otherfor wet sieve analysis as follows.Immerse the sample in a su
33、fficient amount of water to ensure that the fines are completely separated from thecoarse particles and do not ball together.Place the sample on the finest sieve and wash with water, using a rubber tube attached to a tap, until the waterrunning through the sieve is clear. After washing, transfer all
34、 the material retained on the sieve to an evaporatingdish. Dry the evaporating dish and contents at for or until constant mass is attained, i.e. untiltwo successive weighings made apart do not differ by more than or .Allow to cool to room temperature in a desiccator. Remove the sample from the evapo
35、rating dish and weigh tothe nearest . Record the mass as .Place the series of sieves on the shaking device, with the coarsest at the top and the finest at the bottom. Placethe sample on the top sieve and operate the shaking device for . If necessary, the sample can be lightlybrushed over the sieve t
36、o assist the transfer of screenable material onto the next sieve.Remove the sieves from the shaking device, carefully separate and, one at a time, empty the contents of thesieves onto separate pieces of clean paper. Weigh the material collected on each sieve to the nearest .Record the mass as for ea
37、ch fraction, where denotes the sieve size.8Calculation8.1 Sieve analysis8.1.1 Dry sieve analysisCalculate the incremental percentage (mass fraction), , of the sample retained on sieve of mesh size ,using the equation:(1)whereis the mass of material retained by the sieve of mesh size , in grams;is th
38、e mass of sample sieved, in grams.110C 5C1h0,1 g m215 min0,1 g mRR50 g 0,1 g m1ww110C 5C1h10 min 0,2 g 0,5 %0,1 g m215 min0,1 gmRRwRRwR=mRm1 100mRRm1BS ISO 13765-5:20044Calculate the percentage of the material passing through the finest sieve from the mass of material held in thereceiver.8.1.2 Wet s
39、ieve analysis of dry mortarsCalculate the percentage (mass fraction), , of the sample retained on the sieve of mesh size using theequation:(2)whereis the mass of material retained by the sieve of mesh size , in grams;is the mass of sample sieved, in grams.Calculate the percentage (mass fraction), ,
40、of material passing through the finest sieve, using the equation:(3)where is the mass of material retained on the finest sieve after washing and drying, in grams.8.1.3 Wet sieve analysis of ready-mixed mortarsCalculate the mass of the original sample after drying, , in grams, using the equation:(4)w
41、hereis the mass of the wet sample, in grams;is the moisture content (mass fraction) of the wet sample, in percentage.Calculate the incremental percentage (mass fraction), , of the sample retained on sieve of mesh size ,using the equation:(5)whereis the mass of material retained by the sieve of mesh
42、size , in grams;is the equivalent mass of the original sample after drying, in grams.Calculate the percentage of material, , passing through the finest sieve using the equation:(6)wRRwR=mRm1 100mRRm1wFwF=m1m2m1 100m2mdmd=m1 (100 ww)100m1wwwRRwR=mRmd 100mRRmdwFwF=mdm2md 100BS ISO 13765-5:20045whereis
43、 the mass of material retained on the finest sieve after washing and drying, in grams.8.2 Reporting the resultsReport the result as the mean value of the duplicate results to the nearest .If the difference in the sum of the incremental grain size distributions for the duplicate samples exceeds , the
44、result should be disregarded and the test repeated.The grain size distribution can be reported as either:a) Incremental percentage retained by individual sieves,e.g. ;orb) as a cumulative size distribution, in which all the sample that does not pass a particular sieve is reported asa percentage agai
45、nst that sieve number.9 Test reportThe report shall include the following information:a) all information necessary for identification of the material tested, including a description of the material,manufacturer, type, brand, batch number, etc.;b) a reference to this part of ISO 13765 (ISO 13765-5);c
46、) the test method used, i.e. wet or dry sieve analysis;d) the name of the testing establishment;e) the results of the test, calculated as specified in Clause 8, including: the mesh size of sieves used; the mean grain size distribution; whether the distribution is quoted as “incremental retained” or
47、“cumulative greater than”;f) the ambient temperature at which the test was conducted;g) any deviations from the procedure specified;h) any unusual features (anomalies) observed during the test;i) the date of the test.m21%1%0,150 mm + 0,075 mm = 7,4 %BS ISO 13765-5:2004BS ISO BSI389 Chiswick High Roa
48、dLondonW4 4AL13765-5:2005BSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by ame
49、ndment or revision. Users of British Standards should make sure that they possess the latest amendments or editions.It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400.BSI offers mem
