BS 6319-10-1987 Testing of resin and polymer cement compositions for use in construction - Method for measurement of temperature of deflection under a bending stress《建筑用合成树脂胶料试验 第.pdf
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1、BRITISH STANDARD BS 6319-10: 1987 Testing of resin compositions for use in construction Part 10: Method for measurement of temperature of deflection under a bending stress UDC 691.342+691.537:620.174.251.12BS6319-10:1987 This British Standard, having been prepared under the directionof the Civil Eng
2、ineeringand Building Structures Standards Committee,was published underthe authority of the BoardofBSI and comes into effecton 31 March 1987 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference CSB/20 Draft for comment 85/11831 DC ISBN 0 580 15776 8 Commi
3、ttees responsible 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 Adhesives and Sealants Association
4、British Plastics Federation Concrete Society Construction Industry Research and Information Association County Surveyors Society Department of the Environment (Building Research Establishment) Department of Transport (Highways) Federation of Epoxy Resin Formulators and Applicators Ltd. Institution o
5、f Civil Engineers Institution of Highways and Transportation Institution of Structural Engineers Plastics and Rubber Institute Society of Chemical Industry Amendments issued since publication Amd. No. Date of issue CommentsBS6319-10:1987 BSI 08-1999 i Contents Page Committees responsible Inside fron
6、t cover Foreword ii 1 Scope 1 2 Principle 1 3 Test specimens 1 4 Procedure 1 5 Test report 1 Appendix A Effect of temperature on resin compositions 2 Appendix B Degree of cure 2 Publications referred to Inside back coverBS6319-10:1987 ii BSI 08-1999 Foreword This Part of BS6319 has been prepared und
7、er the direction of the Civil Engineering and Building Structures Standards Committee. It describes a method for measurement of the temperature of deflection under a bending stress, alternatively known as the heat distortion temperature (HDT), and is one of a series of Parts describing methods for m
8、easuring basic physical properties of resin based materials. This method is derived from methods121A and121B of BS2782:Methods121A to121C:1976 which have been adapted to the testing of resin compositions used in construction. The precision of this test method has not been considered in detail becaus
9、e it has been derived from tests which are already established. The method is suitable for quality control and comparative purposes but it does not alone provide sufficient information for direct use in structural design. This Part of BS6319 should be read in conjunction with Part1 which provides ge
10、neral information and describes a method for 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 imm
11、unity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages1and 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 be indicated in the
12、 amendment table on the inside front cover.BS6319-10:1987 BSI 08-1999 1 1 Scope This Part of BS6319 describes a method of measurement for the temperature of deflection under a bending stress (alternatively known as heat distortion temperature) for resin based mortars and concretes cast in the form o
13、f rectangular prisms. The method is not applicable for compositions which contain aggregate larger than1.7mm (seenoteto3.2). NOTE 1The effect of temperature on resin compositions is an important but complex subject and interpretation of test data requires care. Several relevant points are discussed
14、in Appendix A and Appendix B. NOTE 2The titles of the publications referred to in this standard are listed on the inside back cover. 2 Principle The principle of this method is the determination of the temperature, referred to in this standard as the heat distortion temperature (HDT), at which a spe
15、cified deformation occurs when the test specimen, in the form of a rectangular prism, is subjected to a specified bending stress and conditions of uniform rate of temperature increase. 3 Test specimens NOTEA number of standard test methods have been published for the determination of the heat distor
16、tion temperature of plastics materials using specimens in the form of rectangular prisms which are subjected to three-point loading. These standards have adopted similar rates of raising the temperature of the specimen (2.0 0.2 C/min for the heat transfer medium), the same fibre stresses (1.8MPa,264
17、psi and0.45MPa,66psi) and, for a given specimen depth, the same deformation (0.25mm for a specimen depth of12.8mm to13.0mm). However, no standard refers specifically to filled thermosetting resin compositions and, furthermore, for the types of materials which are specified, the recommended specimen
18、dimensions often vary from standard to standard. The present method is derived from methods121A and121B of BS2782:Methods121A to121C:1976. 3.1 Preparation of specimens The preparation of specimens, including the conditioning, proportioning and mixing of materials, and the conditioning and filling of
19、 moulds shall be in accordance with BS6319-1. 3.2 Dimensions of test specimens Specimen dimensions of110mm (minimum) 12.8mm 12.8mm shall be used for compositions containing aggregate that, when sampled in accordance with BS812-1, completely passes through a1.7mm BS410 test sieve (mesh number10). NOT
20、EAlthough in principle, the specimen size can be increased in order to accommodate larger aggregate, practical difficulties can then arise due to the modifications which have to be made to the test procedure. 3.3 Curing of specimens Any desired curing regime may be used and shall be declared in the
21、test report. Any conditioning as part of the curing regime shall be declared in the test report. 4 Procedure Using two specimens, weigh each to the nearest0.1g. Use either of the following procedures: procedure A: the procedure given for method121A in BS2782:Methods121A to121C; procedure B: the proc
22、edure given for method121B in BS2782:Methods121A to121C. If only one bending stress is to be utilized use preferably procedure A (maximum fibre stress1.8MPa). Adjust the initial temperature of the heating medium to the curing temperature, or to20 C, whichever is the lower. 5 Test report The followin
23、g information shall be included in the test report: a) date of sample preparation; b) date of test; c) a complete identification of the material tested including the type, source, manufacturers code numbers and history, etc.; d) ambient conditions during the preparation of the specimens and the curi
24、ng regime and conditioning adopted; e) a reference to the procedure used, e.g.“procedure A of BS6319-10”; f) the individual test results and the mean heat distortion temperature under the specified bending stress; g) the nature and initial temperature of the heat transfer medium; h) the mass of each
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