BS 1199 and 1200-1976 Specifications for building sands from natural sources《建筑用天然砂规范》.pdf

1、BRITISH STANDARD BS 1199 and 1200:1976 Incorporating Amendment Nos. 1, 2 and 3 Specifications for Building sands from natural sources UDC 691.223:622.362.3BS 1199 and 1200:1976 This British Standard, having been prepared under the direction of the Aggregates, Natural Stone and Quarry Products Indust

2、ry Standards Committee, was published under the authority of the Executive Board on 30 July 1976 BSI 09-1999 First published December 1944 First revision December 1955 Second revision July 1976 The following BSI references relate to the work on this standard: Committee reference STB/11 ISBN 0 580 08

3、667 4 Co-operating organizations The Aggregates, Natural Stone and Quarry Products industry Standards Committee under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: British Quarr

4、ying and Slag Federation* British Ready Mixed Concrete Association* Cement and Concrete Association* Concrete Society* Department of the Environment* Department of the Environment, Building Research Establishment* Department of the Environment, Transport and Road Research Laboratory* English Slate Q

5、uarries Association Federation of Civil Engineering Contractors* Institution of Civil Engineers Institution of Municipal Engineers* Institute of Quarrying Institution of Structural Engineers* National Environmental Research Council Institute of Geological Sciences National Federation of Building Tra

6、des Employers Royal Institute of British Architects Sand and Ballast Hauliers and Allied Trades Alliance Ltd Sand and Gravel Association Ltd* Society of Chemical Industry The Government departments and scientific and industrial organizations marked with an asterisk in the above list, together with t

7、he following, were directly represented on the committee entrusted with the preparation of this British Standard: British Ceramic Research Association British Precast Concrete Federation Cement Makers Federation Concrete Block Association Greater London Council Mortar Producers Association Ltd Amend

8、ments issued since publication Amd. No. Date of issue Comments 4510 May 1984 4834 April 1985 5126 April 1986 Indicated by a sideline in the marginBS 1199 and 1200:1976 BSI 09-1999 i Contents Page Co-operating organizations Inside front cover Foreword ii BS 1198 Text deleted BS 1199 Sands for externa

9、l renderings and internalplastering withlimeandPortland cement 1 0 Introduction 1 1 Scope 1 2 References 1 3 Definitions 1 4 Sampling and testing 1 5 Quality of sands 1 6 Grading 2 7 Suppliers certificate and cost of tests 2 8 Additional information to be furnished by supplier 2 Table 1 Sands for ex

10、ternal renderings, internal cement and lime plastering 2 Table 2 Table deleted 2 BS 1200 Sands for mortar for plain and reinforced brickwork, blockwallingandmasonry 4 0 Introduction 4 1 Scope 4 2 References 4 3 Definitions 4 4 Sampling and testing 4 5 Quality of sands 5 6 Grading 5 7 Suppliers certi

11、ficate and cost of tests 5 8 Additional information to be furnished by thesupplier 5 Table 1 Sands for mortar for plain and reinforced brickwork, blockwalling and masonry 5 Table 2 Table deleted 5BS 1199 and 1200:1976 ii BSI 09-1999 Foreword This British Standard has been revised under the authority

12、 of the Aggregates, Natural Stone and Quarry Products Industry Standards Committee. The changes which have been made were occasioned by the revision of BS812 in1967 and BS410 in 1969, coupled with the metrication programme. Specific requirements relating to organic impurities have been omitted, pend

13、ing a full technical revision, because of insufficient experience of applying the results from the method given in the 1967 revision of BS812 and the possibility that this may be withdrawn. Because of metrication, the size of the largest particles has been increased slightly and therefore attention

14、may need to be given to its effects. This matter may have to be taken into account in the light of experience at the next revision of the standard. Sands appropriate for use in floor screeds are specified in BS882 and as a consequence sands for this purpose are no longer included in BS1199. As part

15、of BSIs programme of metrication, this standard is expressed in metric terms. A full technical revision of these standards is under consideration. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct a

16、pplication. Compliance 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, pages i and ii, pages1to6, an inside back cover and a back cover. This standard has been updated (see copyright dat

17、e) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS 1199:1976 BSI 09-1999 1 Sands for external renderings and internal plastering with limeandPortland cement 0 Introduction The method of determining the grading of sands is restricte

18、d to that of washing and decantation followed by dry sieving, and the method of dry sieving only is no longer permitted. The washing and sieving method specified is considered to be more reproducible and to produce a more realistic measure of the particle size distribution of the sand. It also deter

19、mines the clay and silt content which is now incorporated in the grading requirements. This change to washing and sieving necessitates revision of the grading limits as those previously given in this edition were based on results from dry sieving. This is not intended to lead to changes in the gradi

20、ngs of sand in use, but it will have the effect of bringing the majority of sands in satisfactory use within the scope of BS1199. BS1199 now specifies two grading ranges of sand. Experience currently available suggests that satisfactory renderings can be achieved using either grade. Where there is a

21、 choice, however, the use of the coarser grade is preferred because finer sands require a higher water to cement ratio which can lead to greater shrinkage than if a coarser grading is used. Some variability in the measured properties of building sands from any source has to be expected. This is caus

22、ed by sampling and testing errors in addition to the natural variability of the material itself. The application of statistical methods has been considered, but has not been included at the present time. 1 Scope This British Standard relates to naturally occurring sands, crushed stone sands and crus

23、hed gravel sands used for external renderings and internal plastering using mixes of lime and sand (with or without the addition of cement or gypsum plaster), cement and sand (with or without the addition of lime). 2 References The titles of the British Standards referred to in this standard are lis

24、ted on the inside of the back cover. 3 Definitions For the purpose of this British Standard, the following definitions apply. 3.1 sand a material mainly passing a 5.00mm BS test sieve which may be either a natural sand or one obtained by crushing hard rocks or gravels 3.2 natural sand a sand produce

25、d by the natural disintegration of rock 3.3 crushed stone sand and crushed gravel sand sands produced by crushing a hard stone or rock and a gravel respectively 4 Sampling and testing 4.1 Sampling and testing of sands shall be carried out in accordance with the requirements of the appropriate sectio

26、ns of BS812. 4.2 The grading of sands shall be determined by the method of sieve analysis by washing and decantation followed by dry sieving as described for the modified procedure in 7.1.6 of BS812-1:1975 but using the following nominal aperture size test sieves, complying with the requirements of

27、BS410. 6.3mm, 5.00mm square hole perforated plate; 2.36mm, 1.18mm, 6004m, 300 1) 4m, 150 1) 4m, 75 1) 4m woven wire. When testing is carried out, compliance of the material with this British Standard shall be judged using the average of two single test results obtained by testing different test port

28、ions. 5 Quality of sands 5.1 Sands shall consist of natural sand, crushed stone sand or crushed gravel sand, or a combination of any of these. They shall be hard, durable, clean and free from adherent coatings, such as clay, and from any appreciable amount of clay in pellet form. Sands shall not con

29、tain harmful materials such as iron pyrites, salts, coal or other organic impurities, mica, shale or similar laminated materials, or flaky or elongated particles in such a form or in sufficient quantity to affect adversely the hardening, the strength, the durability or the appearance of the final pr

30、oduct or any materials in contact with it. The various sizes of particles of which a sand is composed shall be uniformly distributed throughout the mass. 5.2 Text deleted 1) Full tolerancesBS 1199:1976 2 BSI 09-1999 6 Grading The sand shall be of type A or type B and graded within the limits given i

31、n Table 1, when determined according to clause 4. Table 1 Sands for external renderings, internal cement and lime plastering NOTESands complying with the grading requirements in Table 1 for sieve apertures in the range 6.3mm to 6004m but exceeding the requirements for the percentage passing the3004m

32、, 1504m and 754m sieves may also be considered as being satisfactory where there is evidence of acceptable performance in use. Although insufficient information exists to provide generalized and authoritative guidance on the use of such materials, local experience of their performance in use may hel

33、p in the evaluation of their suitability for particular applications. Table 2 Table deleted 6.2 A sand whose grading falls outside the above limits on sieves other than the 5.00mm sieve in Table 1 and the 2.36mm sieve in Table2, by a total amount not exceeding 5% shall be regarded as being within th

34、ose limits. This 5% can be split up, for example, as 1% on each of three sieves and 2% on another, or4 % on one sieve and 1% on another. NOTE 1Sands which just fall outside the above limits due to a small excess of coarse particles can often be made to comply with this British Standard by screening

35、through a suitably sized sieve. Finishing coat sands as specified in Table 2 can often be obtained by screening undercoat sands in a similar manner. The required grading for either undercoats or finishing coats can often be attained by blending together sands which are by themselves unsuitable. NOTE

36、 2The most suitable grading of sand for an external rendering will depend, to some extent, upon the finishing treatment. The sand grading specified will, in general, be suitable for the undercoats and for some finishing coats such as the smooth (floated) finishing coats, the scraped finishes and for

37、 pebble-dash or dry-dash. For some textured finishes, such as those produced by treatment of the freshly applied final coat with a tool, it may be desirable to remove the coarser particles (e.g. by screening through a 2mm sieve), while for others such as “torn texture”, some proportion of material c

38、oarser than 5mm may be needed. For roughcast (wet dashing or harling) the grading and maximum size, will vary according to the texture required and the type of aggregate: the proportion of coarse material (over5mm) to fine should be about 1 : 2. 7 Suppliers certificate and cost of tests The supplier

39、 shall satisfy himself that the output at the source of production complies consistently with the requirements of this British Standard and, if requested, shall give a certificate to this effect to the purchaser or his representative. If the purchaser or his representative requires independent tests

40、 or the certification of individual consignments, the samples shall be taken before or immediately after delivery at the option of the purchaser or his representative, and these tests shall be carried out in accordance with the appropriate requirements of this British Standard on the written instruc

41、tions of the purchaser or his representative. Unless otherwise specified with the enquiry and order, the supplier shall supply free of charge the material required for testing and the cost of the tests (unless otherwise stipulated) shall be borne: a) by the supplier, in the event of results showing

42、that the material does not comply with the standard; b) by the purchaser, in the event of results showing that the material does so comply. 8 Additional information to be furnished by the supplier When requested by the purchaser or his representative, the supplier shall provide any of the following

43、additional particulars. 8.1 Source of supply 8.1.1 County. 8.1.2 Parish. 8.1.3 Name of quarry or pit. 8.1.4 For material dredged from seas, estuaries or rivers, the precise locality from which the material was obtained shall be stated. 8.2 Group classification (determined according to the group clas

44、sification of aggregates given in BS812). BS sieve Percentage by mass passing BS sieves Type A Type B mm % % 6.30 100 100 5.00 95 100 95 100 2.36 60 100 80 100 1.18 30 100 70 100 4m 600 15 80 55 100 300 5 50 5 75 150 0 15 0 20 75 not greater than 5 not greater than5BS 1199:1976 BSI 09-1999 3 8.3 Ext

45、ernal characteristics 8.4 Physical properties 8.4.1 Relative density and water absorption (determined according to those methods for the determination of relative density and water absorption given in BS 812 appropriate to sand). 8.4.2 Bulk density in kilograms per cubic metre (determined according

46、to the method for determination of bulk density of aggregate given in BS 812). 8.5 Grading. A typical sieve analysis determined according to the requirements of clause 4. 8.3.1 Shape (described according to the classification of particle shape and of surface texture given in BS812). 8.3.2 Surfacetex

47、ture BS 1200:1976 4 BSI 09-1999 Sands for mortar for plain and reinforced brickwork, blockwalling and masonry 0 Introduction By the issue of Amendment No. 1, published May1984, the method of determining the grading of sands is restricted to that of washing and decantation followed by dry sieving, an

48、d the method of dry sieving only is no longer permitted. The washing and sieving method specified is considered to be more reproducible, and to produce a more realistic measure of the particle size distribution of the sand. It also determines the clay and silt content which is now incorporated in th

49、e grading requirements. This change to washing and sieving necessitates revision of the grading limits as those previously given in this edition were based on results from dry sieving. Amendment No. 1 is not intended to lead to changes in the gradings of sand in use but it will have the effect of bringing the majority of sands in satisfactory use within the scope of BS1200. There are advantages to be had from widening the scope in this way, provided it is recognized that the mix has to be properly designed(see notes to Table