1、BRITISH STANDARD BS 6319-5: 1984 Testing of resin compositions for use in construction Part 5: Methods for determination of density of hardened resin compositions UDC 691.342+691.537:620.531.754BS6319-5:1984 This British Standard, having been prepared under the directionof the Civil Engineeringand B
2、uilding Structures Standards Committee,was published underthe authority of the BoardofBSI and comes into effecton 31January1984 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference CSB/20 Draft for comment82/10312 DC ISBN 0 580 13720 1 Committees responsi
3、ble for this British Standard The preparation of this British Standard was entrusted by the Civil Engineering and Building Structures Standards Committee (CSB/-) to Technical Committee CSB/20 upon which the following bodies were represented: British Adhesive Manufacturers Association British Plastic
4、s Federation Cement and Concrete Association Concrete Society Construction industry Research and Information Association County Surveyors Society Department of the Environment (Building Research Establishment) Department of the Environment (Property Services Agency) Department of the Environment (Tr
5、ansport and Road Research Laboratory) Federation of Resin Formulators and Applicators Ltd. Institution of Civil Engineers Institution of Highway Engineers Institution of Structural Engineers Plastics and Rubber Institute Society of Chemical Industry Coopted member Amendments issued since publication
6、 Amd. No. Date of issue CommentsBS6319-5:1984 BSI 08-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 Principle 1 4 Apparatus 1 5 Test specimens 1 6 Procedures 1 7 Calculations 2 8 Test report 2 Publications referred to Inside back coverBS6319-5:
7、1984 ii BSI 08-1999 Foreword This Part of BS6319 has been prepared under the direction of the Civil Engineering and Building Structures Standards Committee. This Part describes methods for measurement of density and is one of a series of Parts describing methods for measuring basic physical properti
8、es of resin-based materials. The density of a hardened resin composition is an important factor since it is directly related to the degree of consolidation and the amount of air entrapped during mixing. Since most of the performance characteristics of a composition may be impaired by inadequate cons
9、olidation, it is desirable that density measurement should accompany all assessments of strength properties of hardened resin compositions. This Part of this British Standard should be read in conjunction with BS6319-1 which provides general information and describes a method for preparing test spec
10、imens. 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 particular, attention is drawn
11、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 incorporated. This will
12、be indicated in the amendment table on the inside front cover.BS6319-5:1984 BSI 08-1999 1 1 Scope This Part of BS6319 describes two methods for the determination of the density of specimens of hardened resin-based mortars and concretes. The methods may be applied both in the laboratory under closely
13、 controlled conditions and on site for routine checks. Method A is a simple measurement method that can be applied only to regular-shaped specimens. Method B is a pyknometer method and is suitable for regular- or irregular-shaped specimens. It should be noted that the pyknometer method is only suita
14、ble for resin compositions that absorb less than1% (by mass) of water during the duration of the test. These methods may also be used to determine the relative density of the material. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Definitions
15、For the purposes of this Part of BS6319 the definitions given in BS6319-1 apply. 3 Principle 3.1 Method A. The density of a regular-shaped specimen is determined by measurement of its dimensions and relating the calculated volume to the mass of the specimen. 3.2 Method B. The density of a specimen i
16、s determined by measuring the volume of water displaced when it is introduced into a water-filled pyknometer and relating this to the mass of the specimen. 4 Apparatus 4.1 Method A 4.1.1 Calipers, complying with BS3123. 4.1.2 Balance, capable of determining the mass of the specimen to the nearest10m
17、g. 4.2 Method B 4.2.1 Pyknometer, comprising a cylindrical glass vessel with a flat glass plate lid. The vessel shall be of minimum volume able to contain the specimen. Its mouth shall be ground to form a watertight seal with the lid. 4.2.2 Balance, capable of determining the mass of the pyknometer
18、filled with specimen and water to the nearest50mg. 4.2.3 Thermometer, graduated in divisions of0.5 C and having an accuracy of 0.5 C. 5 Test specimens 5.1 General. Any conditioning or treatment of the specimens of the hardened resin composition prior to testing shall be declared in the test report.
19、The volume of each specimen shall be not less than62.5cm 3 . NOTEThis requirement will be met by using the specimens described in BS6319-2 and BS6319-3. The actual size of the specimen is dependent upon the size of the aggregate used. Each specimen shall be representative of the resin composition be
20、ing assessed. Where more than one specimen is to be tested, the specimens shall be taken from the same batch of mixed materials. 5.2 Dimensions of specimens 5.2.1 Method A. Only regular-shaped specimens shall be measured for the calculation of volume. 5.2.2 Method B. Specimens may be of any shape an
21、d may comprise as many pieces as will conveniently fit into the pyknometer. Moulded cubes prepared for compressive strength determination and prisms for flexural strength determination are suitable. NOTEPieces with concavities should not be used because of the risk of entrapping air. 6 Procedures 6.
22、1 General 6.1.1 Sample a) On-site tests. For routine purposes, e.g.on-site tests, test one or more specimens. b) Laboratory tests. When the test is to be carried out under closely controlled conditions for the purpose of obtaining reference data, test a minimum of three specimens. 6.1.2 Temperature.
23、 Carry out the test at a temperature of20 1 C. Maintain the specimen, and in method B the pyknometer, at this temperature for not less than16h before testing commences. 6.2 Method A. Weigh each specimen and record its mass, m (in g), to the nearest10mg. Using calipers, measure the dimensions of each
24、 specimen between opposite vertical faces and the height as cast at four points across each pair of opposite faces. Calculate the mean of each set of four measurements and calculate the volume, V (inmm 3 ), of each specimen. 6.3 Method B 6.3.1 Weigh each specimen and record its mass, m 1(in g), to t
25、he nearest10mg.BS6319-5:1984 2 BSI 08-1999 6.3.2 Fill the pyknometer with water at20 C and slide the lid into place, taking care that no air bubbles remain within the pyknometer. Wipe dry the outside of the pyknometer and its lid and determine the mass of the filled pyknometer, m 2(ing), to the near
26、est50mg. 6.3.3 Remove the lid and introduce a specimen, taking great care to ensure that no air bubbles remain adhered to the specimen. NOTEIn some cases it may be found advantageous to pre-wet the specimen with water containing a trace of a suitable wetting agent. 6.3.4 Completely fill the vessel w
27、ith water and replace the lid as before. Wipe dry the outside of the vessel and lid and determine the mass of the pyknometer filled with specimen and water, m 3(ing), to the nearest50mg. 6.3.5 Repeat the procedure given in6.3.3 and6.3.4 on each of the remaining specimens. 7 Calculations 7.1 General.
28、 Calculate the density, , of each specimen using the equations in7.2 or7.3, as appropriate. Where more than one specimen is tested calculate the mean density. Express the values to the nearest0.01. NOTEThe relative density of the specimen may, for all practical purposes, be calculated by multiplying
29、 the density by1000. Relative density is a dimensionless quantity. 7.2 Method A. Calculate the density, (in g/mm 3 ), from the following equation: where m is the mass of the specimen (in g); V is the volume of the specimen (in mm 3 ). 7.3 Method B. Calculate the density, (in g/mm 3 ), from the follo
30、wing equation: where m 1is the mass of the specimen (in g); m 2is the mass of the pyknometer plus water (ing); m 3is the mass of the pyknometer plus water and specimen (in g). D is the density of water (taken as1 10 3g/mm 3 ). 8 Test report The following information shall be included in the test rep
31、ort: a) date and site of sample preparation; b) ambient conditions during the preparation and testing of each specimen, and the curing regime adopted; c) a complete identification of the material tested including type, source, manufacturers code and history; d) the form (including number of pieces)
32、of each specimen; e) the mass of each specimen; f) in the case of method A, the size and volume of each specimen; g) the density or relative density of each specimen. m V - = m 1 D m 1 m 2 m 3 + - =BS6319-5:1984 BSI 08-1999 Publications referred to BS 6319, Testing of resin compositions for use in c
33、onstruction. BS 6319-1, Method for preparation of test specimens. BS 6319-2, Method for measurement of compressive strength. BS 6319-3, Method for measurement of flexural strength. BS 3123, Spring calipers and spring dividers. BS 6319-5: 1984 BSI 389 Chiswick High Road London W4 4AL BSIBritishStanda
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