1、BRITISH STANDARD BS 6319-2: 1983 Testing of resin compositions for use in construction Part 2: Method for measurement of compressive strength UDC 691.342+691.537:620.173.2BS6319-2:1983 This British Standard, having been prepared under the directionof the Civil Engineering and Building Structures Sta
2、ndards Committee was published under the authority of the Board of BSI and comes into effect on 31 January 1983 BSI 02-1999 The following BSI references relate to the work on this standard: Committee reference CSB/20 Draft for comment 81/13894 DC ISBN 0 580 13131 9 Cooperating organizations The Civi
3、l Engineering and Building Structures Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following: The organizations marked with an asterisk in the above list, together with the following, were directly represented on the Technical Co
4、mmittee entrusted with the preparation of this British Standard: Aluminium Federation Department of Transport Association of Consulting Engineers Federation of Civil Engineering Contractors Brick Development Association Health and Safety Executive British Constructional Steelwork Association Institu
5、tion of Civil Engineers* British Precast Concrete Federation Ltd. Institution of Municipal Engineers British Steel Industry Institution of Public Health Engineers Cement and Concrete Association* Institution of Structural Engineers* Concrete Society Limited* Institution of Water Engineers and Scient
6、ists Consumer Standards Advisory Committee of Local Authorities Organization BSI Ministry of Agriculture, Fisheries and Food Convention of Scottish Local Authorities National Federation of Building Trades County Surveyors Society* Employers Department of the Environment (PSA)* National Water Council
7、 Department of the Environment (Building Royal Institute of British Architects Research Establishment)* Scottish Development Department Department of the Environment (Water Timber Research and Development Directorate) Association Department of the Environment (Housing and Trades Union Congress Const
8、ruction) Department of the Environment (Transport and Road Research Laboratory)* British Adhesive Manufacturers Association Institution of Highway Engineers British Plastics Federation Plastics and Rubber Institute Construction Industry Research and Society of Chemical Industry Information Associati
9、on Coopted member Federation Resin Formulators and Applicators Ltd. Amendments issued since publication Amd. No. Date of issue CommentsBS6319-2:1983 BSI 02-1999 i Contents Page Cooperating organizations Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 Principle 1 4 Apparatus 1 5 Test speci
10、mens 1 6 Procedure 1 7 Calculation 2 8 Test report 2 Publications referred to Inside back coverBS6319-2:1983 ii BSI 02-1999 Foreword This Part of this British Standard has been prepared under the direction of the Civil Engineering and Building Structures Standards Committee. This Part describes a me
11、thod for measurement of compressive strength and is one of a series of Parts describing methods for measuring basic physical properties of resin based materials. This Part of this British Standard should be read in conjunction with BS6319-1 which provides general information and describes a method f
12、or preparing test specimens. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. In particula
13、r, attention is drawn to the Health and Safety at Work etc. Act 1974. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments in
14、corporated. This will be indicated in the amendment table on theinside front cover.BS6319-2:1983 BSI 02-1999 1 1 Scope This Part of BS6319 describes the procedure for the measurement of the compressive strength of specimens of resin based mortars and concretes in the form of cubes. This method is no
15、t applicable to unfilled systems. NOTE 1The procedure described in BS2782: Method 345A is suitable for unfilled systems. NOTE 2The titles of the publications referred to in this standard are listed on the inside back cover. 2 Definitions For the purposes of this Part of BS6319 the definitions in BS6
16、319-1 apply together with the following. 2.1 compressive stress (nominal) the compressive force (in N/mm 2 ) carried by the test piece per unit area of original cross section 2.2 compressive strength the maximum stress (in N/mm 2 ) carried by the test piece during a compressive test at the time of f
17、ailure (see also note to6.2.3) 3 Principle The principle of the test is the subjection of test pieces of a defined geometry to a compressive force until failure of the specimen occurs. Measurement of the compressive force is carried out to determine compressive strength. 4 Apparatus 4.1 Compression
18、testing machine, of suitable capacity* for the test and complying with the requirements of BS1881-115. It shall be capable of applying load at the rate specified in6.2.3 and shall comply with the requirements for grade A of BS1610 as regards repeatability and accuracy. If a compression cage is used
19、to convert the action of a tensile or universal test machine to the compressive mode, a sub-assembly shall be used to provide the necessary self alignment facility to one platen. The auxiliary platens shall comply with the requirements of BS1881-115. A spacing block or blocks may be interposed betwe
20、en the cube or the auxiliary platen and the lower machine platen to reduce the test space providing that the system is stable throughout the test and means are available for the cube to be correctly centered. Not more than two spacing blocks plus an auxiliary platen shall be used. Each spacing block
21、 shall be solid with a rectangular vertical section, and shall support the cube or the auxiliary platen over the whole of its area. The properties of the material, and the surface flatness, surface texture, and parallelism of the contact faces of each block shall comply with the requirements of BS18
22、81-115. NOTEThe size of specimen required by this standard means that the geometry, including the size of any ball seating, of the test machine is likely to be important. 4.2 Moulds. Moulds shall comply with the requirements of BS 6319-1 and shall be of a size to produce cuboid samples in accordance
23、 with clause5. 5 Test specimens 5.1 Preparation of specimens. The preparation of specimens, including the conditioning, proportioning, and mixing of the materials and the conditioning and filling of the mould shall be in accordance with BS6319-1. 5.2 Dimensions of specimens. Specimens shall be cubes
24、 of sides40mm unless the material under test contains an aggregate that, when sampled in accordance with BS812-1, will not pass through a4.75mm BS410 test sieve. For such materials the dimension of the sides of the cube shall be between7.0 and8.0 times the nominal mesh size of the smallest BS410 sie
25、ve through which90% of the aggregate will pass. NOTE 1This requirement ensures that the depth of material employed in the test is related to the depth of layer in which the material is intended to be used and will thus develop a similar exotherm. NOTE 2Prisms may be sawn into a number of samples pro
26、vided that a high speed water-cooled saw is used and that the dimensional tolerances specified in BS6319-1 are maintained. 6 Procedure 6.1 Sample. Test a minimum of three specimens at a time for each prescribed set of test conditions. 6.2 Testing 6.2.1 Temperature. Carry out the test at20 1 C unless
27、, for a specific purpose, an alternative temperature is deemed more appropriate. Maintain the test specimens at the test temperature conditions for not less than16h before testing commences.BS6319-2:1983 2 BSI 02-1999 6.2.2 Placing the specimen in the testing machine. Wipe clean the bearing surfaces
28、 of the testing machine and of any auxiliary platens. Remove any loose grit or other material from the surfaces of the cube that are to be in contact with the compression platens. Place the test cube in the machine in such a manner that the load is applied to opposite sides of the test cube as cast,
29、 i.e. not to the top and bottom. Place the cube on the lower machine platen and carefully centre. Do not use packing at any of the interfaces between the cube, auxiliary platens, spacing blocks and machine platens. 6.2.3 Loading. Apply the load without shock and increase it continuously so that stre
30、ss is applied at the rate of approximately45N/mm 2per minute. Record the maximum load applied to the cube up to the point of failure (see note). NOTEIt should be noted that some resin based materials may fail in the same way as concrete in that continuously increasing load application results in tot
31、al collapse of the specimen. Some resin compounds, however, may yield with or without visible or audible signs of fracture. This may be discerned when the continued steady application of effort does not produce a corresponding increase in load. At this point, strain in the specimen may be increasing
32、 and the load supported remain constant or decline. Further application of effort may result in a higher load. In such a case, failure should be deemed to have occurred at the load indicated when it was first apparent that strain was occurring in the specimen without a corresponding increase in load
33、. 7 Calculation Calculate the compressive strength of each cube by dividing the maximum load by the nominal cross-sectional area. Also calculate the mean compressive strength for a minimum of three specimens originating from the same mix. Express the values of compressive strength to the nearest1.0N
34、/mm 2 . 8 Test report The following information shall be included in the report: a) date and site of sample preparation; b) date of test; c) ambient conditions during the preparation and testing of the specimens, and the curing regime adopted; d) a complete identification of the material tested, inc
35、luding type, source, manufacturers code numbers and history; e) nominal size of specimens; f) mass of each specimen; g) compressive strength of each specimen; h) arithmetic mean compressive strength; i) mode of failure, e.g. whether by brittle fracture, asymmetric failure or plastic deformation; j)
36、type of test machine used; k) additional information, e.g. whether prepared from a manufacturers sample pack or sampled from bulk deliveries.BS6319-2:1983 BSI 02-1999 Publications referred to BS 410, Specification for test sieves Methods for sampling and testing of mineral aggregates, sands and fill
37、ers. BS 410-1, Sampling, size, shape and classification. BS 812, Methods for sampling and testing of mineral aggregates, sands and fillers. BS 812-1, Sampling, size, shape and classification. BS 1610, Methods for the load verification of testing machines. BS 1881, Testing concrete. BS 1881-115, Spec
38、ification for compression testing machines for concrete. BS 2782, Methods of testing plastics. BS 2782-3, Mechanical properties. BS 2782: Method 345A, Determination of compressive properties by deformation at constant rate. BS 6319, Testing of resin compositions for use in construction. BS 6319-1, M
39、ethod for preparation of test specimens. BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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