BS EN 29052-1-1992 Acoustics - Method for the determination of dynamic stiffness - Materials used under floating floors in dwellings《声学 动态稳定度的测定方法 在住宅中浮隔地板下用的材料》.pdf

1、BRITISH STANDARD BS EN 29052-1:1992 ISO9052-1: 1989 Acoustics Method for the determination of dynamic stiffness Part1: Materials used under floating floors in dwellings The European Standard EN29052-1:1992 has the status of a British Standard UDC 699.844-405.8:534.833:620.1:533.6.011.2BSEN29052-1:19

2、92 This British Standard, having been prepared under the directionof the Environment andPollution Standards PolicyCommittee, was publishedunder the authorityofthe StandardsBoardand comes into effect on 15September1992 BSI12-1999 The following BSI references relate to the work on this standard: Commi

3、ttee reference EPC/1 Draft announced in BSI News May1991 ISBN 0 580 21114 2 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oest

4、erreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technol

5、ogical Institute of Iceland Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain A

6、sociacin Espaola de Normalizacin y Certificacin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN29052-1:1992 BSI 12-1999 i Contents Page Cooperatin

7、g organizations Inside front cover National foreword ii Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Principle 4 5 Test arrangement 4 6 Test specimen 4 7 Procedure 4 8 Expression of results 6 9 Test report 6 National annex NA (informative) Committees responsible 8 National annex N

8、B (informative) Cross-references Inside back cover Figure 1 Excitation of the load plate Vibration measurement of the load plate only 5 Figure 2 Excitation of the load plate Vibration measurements of both the load plate and the baseplate 5 Figure 3 Excitation of the baseplate Vibration measurements

9、of both the load plate and the baseplate 5BSEN29052-1:1992 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Environment and Pollution Standards Policy Committee and is the English language version of EN29052-1:1992, Acoustics Determination of dynami

10、c stiffness Part1:Materials used under floating floors in dwellings, published by the European Committee for Standardization (CEN), which endorses ISO5902-1:1989, Acoustics Determination of dynamic stiffness Part1:Materials used under floating floors in dwellings, published by the International Orga

11、nization for Standardization (ISO). 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. Summa

12、ry of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to8, 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 amendment table on

13、the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN29052-1 June1992 UDC 699.844-405.8:534.833:620.1:533.6.011.2 Descriptors: Acoustics, acoustics insulation,residential buildings, slabs, insulation materials: acoustics, determination, dynamic stiffness, vibration tests Englis

14、h version Acoustics Determination of dynamic stiffness Part1: Materials used under floating floors in dwellings Acoustique Dtermination de la raideur dynamique Partie1: Matriaux utiliss sous les dalles flottantes dans les btiments dhabitation Akustik Bestimmung der dynamischen Steifigkeit Teil1: Mat

15、erialien, die unter schwimmenden Estrichen in Wohngebuden verwendet werden This European Standard was approved by CEN on1992-06-24. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national stan

16、dard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other l

17、anguage made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Irel

18、and, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1992 Copyright reserved to CEN membe

19、rs Ref. No. EN29052-1:1992EEN29052-1:1992 BSI 12-1999 2 Foreword Following the positive result of the Unique Acceptance Procedure, CEN adopted the International Standard ISO9052-1:1989 “Acoustics Determination of dynamic stiffness Part1: Materials used under floating floors in dwellings”. This Europ

20、ean Standard has been drawn up in order to comply with the request of the Standing Committee for construction following Council Directive89/106/EEC on construction products and the provisional mandate “Protection against noise” (BC/CEN/08/1991) related to it and issued by EEC and EFTA. National stan

21、dards identical to this European Standard shall be published at the latest by1992-12-31 and conflicting national standards shall be withdrawn at the latest by1992-12-31. In accordance with the Common CEN/CENELEC Rules the following countries are bound to implement this European Standard: Austria, Be

22、lgium, Denmark, Finland, France, Greece, Germany, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EN29052-1:1992 BSI 12-1999 3 1 Scope This part of ISO9052 specifies the test method for determining the dynamic stiffness of resilient m

23、aterials used under floating floors. Dynamic stiffness is one of the parameters that determine the sound insulation of such floors in dwellings. This part of ISO9052 applies to the determination of dynamic stiffness per unit area of resilient materials with smooth surfaces(see clause6) used in a con

24、tinuous layer under floating floors in dwellings. It does not apply to loadings lower than0,4kPa 1) , for example materials in wall linings, or greater than4kPa 1) , for example materials under machinery foundations (see note2). This part of ISO9052 is mainly intended to be used for comparing produc

25、tion samples of similar materials of known specified quality. For restrictions concerning the airflow resistivity of the resilient material to be tested,see8.2. NOTE 1The dependence of dynamic stiffness on prestatic load is of minor importance in the case of materials usually applied in wall linings

26、, for example polystyrene or mineral fibre. The differences between dynamic stiffness values measured with a static load of2kPa in accordance with this part of ISO9052 and those measured with a very low preload are of the order of10% to20%. NOTE 2A further part of ISO9052 will deal with the determin

27、ation of dynamic stiffness of materials used in technical floating floors (high static load). 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO9052. At the time of publication, the editions indicated wer

28、e valid. All standards are subject to revision, and parties to agreements based on this part of ISO9052 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Stan

29、dards. ISO7626-2:, Vibration and shock Experimental determination of mechanical mobility Part2: Measurements using single-point translation excitation with an attached vibration exciter 2) . ISO9053:, Acoustics Materials for acoustical applications Determination of airflow resistance 2) . 3 Definiti

30、ons 3.1 dynamic stiffness the ratio of dynamic force to dynamic displacement for the purposes of this part of ISO9052, dynamic stiffness per unit area, s, is used and is given by the following equation: where S is the area of the test specimen; F is the dynamic force acting perpendicularly on the te

31、st specimen; %d is the resulting dynamic change in thickness of the resilient material. in this part of ISO9052, the following quantities are used: dynamic stiffness per unit area of the materials structure, s s ; dynamic stiffness per unit area of enclosed gas (e.g.air), s a ; apparent dynamic stif

32、fness per unit area of the test specimen, s t ; the dynamic stiffness per unit area of the installed resilient material, s. 3.2 natural frequency, f 0 frequency of free oscillation of a system the natural frequency of a resiliently supported floor is given by the following equation: where s is the d

33、ynamic stiffness per unit area of the installed resilient material; m is the mass per unit area of the supported floor. 1) 1Pa=1N/m 2 2) To be published. . . . (1) . . . (2)EN29052-1:1992 4 BSI 12-1999 3.3 resonant frequency, f r frequency at which resonance occurs in the test arrangement the resona

34、nt frequency is given by the following equation: where s t is the apparent dynamic stiffness per unit area of the test specimen; m t is the total mass per unit area used during the test. 4 Principle Determination of the apparent dynamic stiffness per unit area of the test specimen, s t , by a resona

35、nce method in which the resonant frequency, f r , of the fundamental vertical vibration of a spring-and-mass system is measured, the spring being the test specimen of the resilient material under test and the mass being a load plate. 5 Test arrangement The specimen shall be placed between two horizo

36、ntal surfaces, i.e.the base (or baseplate) and the load plate. The load plate shall be square, with dimensions(200 3)mm (200 3)mm, and made of steel. The base (or baseplate) and the load plate shall have profile irregularities of less than0,5mm and be sufficiently rigid to avoid bending waves in the

37、 frequency range of interest. The excitation is applied by one of the methods shown in Figure 1, Figure 2 or Figure 3. The total load on the test specimen including all measuring and/or excitation equipment shall be8kg 0,5kg. Excitation and measuring devices shall be applied in such a way that only

38、vertical oscillations (i.e.without rotational components) occur. For the test set-up shown in Figure 1, the inertia of the base shall be such that in vibration its velocity is negligible compared with that of the load plate. For the test arrangements shown in Figure 2 and Figure 3, the mass of the b

39、aseplate shall be at least100kg. 6 Test specimen At least three square specimens of dimensions200mm 200mm shall be taken. The surfaces of the test specimens shall be considered to be smooth if the surface irregularities are less than3mm. The test specimen shall be covered with a waterproof plastic f

40、oil, approximately0,02mm thick, on which a thin paste of plaster of Paris and water is applied to a depth of at least5mm so that any unevenness is covered. Before the plaster begins to set, the load plate shall be bedded onto it as shown in Figure 1a), Figure 2a) and Figure 3a). In the case of close

41、d cell materials, the joint between the specimen and the base (or baseplate) shall be sealed around the perimeter with a fillet of petroleum jelly. See Figure 1b), Figure 2b) and Figure 3b). 7 Procedure 7.1 General The resonant frequency, f r , of the fundamental vertical vibration of the test speci

42、men and the load plate can be determined by using either sinusoidal, white noise or pulse signals. All these methods are equivalent. In case of dispute, the method using sinusoidal signals(7.2) shall be the reference method. 7.2 Sinusoidal signals Obtain the resonant frequency by varying the frequen

43、cy of excitation, while keeping the excitation force constant. If the resonant frequency depends on the amplitude of the excitation force, this dependence shall be determined down to as low a value as possible and the resonant frequency shall be found by extrapolation to zero force amplitude. Depend

44、ing on the expected stiffness value, the measurement interval used as the basis for extrapolation shall be as follows: 0,2Nu Fu 0,8N where s 50MN/m 3 0,1Nu Fu 0,4N where su 50MN/m 3 Within these intervals, measurements shall be taken at least at three points. NOTEWhen testing material with high inte

45、rnal damping, the vertical vibration maximum is not pronounced. In this case, resonance can be detected by observing the phase shift between the excitation and vibration signal. . . . (3)EN29052-1:1992 BSI 12-1999 5 Figure 1 Excitation of the load plate Vibration measurement of the load plate only F

46、igure 2 Excitation of the load plate Vibration measurements of both the load plate and the baseplate Figure 3 Excitation of the baseplate Vibration measurements of both the load plate and the baseplateEN29052-1:1992 6 BSI 12-1999 7.3 White noise or pulse signals Obtain the resonant frequency by anal

47、ysing the frequency response of the system in accordance with ISO7626-2 or by using impact excitation. 3) 8 Expression of results 8.1 Apparent dynamic stiffness per unit area of the test specimen, s t The apparent dynamic stiffness per unit area of the test specimen, s t , in newtons per cubic metre

48、, is given by the following equation: where m t is the total mass per unit area used during the test, in kilograms per square metre; f r is the extrapolated resonant frequency, in hertz. 8.2 Dynamic stiffness per unit area, s, of the resilient material Depending on the airflow resistivity, r, in the

49、 lateral direction, the dynamic stiffness per unit area, s, of the resilient material is given as shown ina),b) andc) below. The airflow resistivity, r, shall be determined in accordance with ISO9053: a) For high airflow resistivity, where rW 100kPas/m 2 b) For intermediate airflow resistivity, where100kPas/m 2 rW 10kPas/m 2 The dynamic stiffness per unit area of the enclosed gas, s a , is calculated in accordance with equation(7) which is based on the assumption