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1、 W - - - - - - - - - 7 - 7- - 7- - - 9 - - - -$ 800 kg/m are also valid for general purpose mortar with a bond strength classification equal to or greater than M5 and for thin layer mortar. (4) Test results with thin layer mortar are valid for all types of thin layer mortar and general purpose morta
2、r with a bond strength classification equal to or greater than M5. (5) Test results for unplastered or unrendered specimens with unfilled perpend joints are valid for all types of perpend joints (filled, unfilled, tongue and groove) with a maximum perpend joint thickness equal to or smaller than tes
3、ted. EN 15254-2:2009 (E) 9 (6) Test results for unplastered or unrendered specimens with filled perpend joints are valid for all values of perpend joint thickness. (7) Test results for plastered or rendered specimens are valid for all types of perpend joints. (8) For the classification EI-M an extra
4、polation is possible within one type of mortar and from: general purpose mortar to thin layer mortar; lightweight mortar to thin layer mortar; lightweight mortar to general purpose mortar with a strength equal to or greater M5; thin layer mortar to general purpose mortar with a bond strength classif
5、ication equal to or greater than M10. 5.1.3 Influence of plaster, rendering or external covering (1) If plaster or rendering based on gypsum or lightweight aggregates is used, the result is valid for the tested type of plaster and renders LW and T according to EN 998-1 of the same or greater thickne
6、ss. If tested without plaster or rendering the test results are also valid for plastered or rendered walls. (2) Rendering for external walls may be replaced by a second leaf of masonry or a thermal insulation with insulation material of reaction to fire class A1 or A2. 5.1.4 Geometrical parameters (
7、1) If the wall is tested with 3 m height, the height may be extrapolated up to a slenderness (height ratio h/t) of 40 or a maximum height of 8 m for classifications E, EI or E-W, the lower value applying, if the deflection of the tested specimen in mid height is smaller than half of the thickness of
8、 the wall. For greater tested deflections in mid height, the maximum slenderness is restricted to the tested slenderness. (2) The height can also be extrapolated by an appropriate design method given in EN 1996-1-2. (3) If the wall is tested with 3 m height, the height may be extrapolated up to a sl
9、enderness (height ratio h/t) of 40 and a maximum height of 5 m for classification EI-M, the lower value applying, if the deflection of the tested specimen in mid height is smaller than half of the thickness of the wall. For greater tested deflections in mid height, the maximum slenderness is restric
10、ted to the tested slenderness. (4) Test results are valid for all wall lengths (l). (5) Test results are valid for wall thicknesses (t) equal to or greater than tested. These limits shall not exceed those given in the design for the ultimate and service limit state according to EN 1996-1-1 or EN 199
11、6-3. 5.1.5 Connection systems If the wall is tested with a connection system defined in EN 1996-1-2:2005, Annex E, test results are valid for all types of connection systems defined in EN 1996-1-2:2005, Annex E. 5.2 Gypsum blocks according to EN 12859 5.2.1 Rules for blocks (1) The test results for
12、solid blocks are only valid for solid blocks. If blocks with cavities are tested, the results are valid for blocks with a smaller percentage of cavities, and thicker shells as well as for solid blocks. EN 15254-2:2009 (E) 10 (2) For the classification EI the test results are valid for blocks of heig
13、ht, length or thickness equal to or greater than tested up to the maximum dimensions given in EN 12859. (3) The test results are valid for walls with blocks with the same or higher declared value of the gross density of the blocks. (4) The test results are valid for walls with the same or a higher d
14、eclared value of the flexural strength of blocks. 5.2.2 Rules for adhesives An extrapolation is only possible for gypsum blocks assembled with gypsum based adhesives defined in EN 12860. 5.2.3 Influence of plaster, rendering or external covering NOTE Walls made from gypsum blocks are usually not pla
15、stered. (1) Results for walls tested with unfilled perpend joints and no plastering or rendering are valid for all types of perpend joints. (2) An up 3 mm skin of organic plaster or rendering may be applied without adversely affecting the fire performance. (3) Inorganic plaster or rendering may be a
16、pplied without adversely affecting the fire performance. 5.2.4 Geometrical parameters (1) If the wall is tested with 3 m height, the height may be extrapolated up to a slenderness (height ratio h/t) of 60 or a maximum height of 8 m, the lower value applying, if the deflection of the tested specimen
17、in mid height is smaller than half of the thickness of the wall. These limits shall not exceed those given in the design for the maximum dimensions and stress level according to EN 15318. For greater tested deflections in mid height, the maximum slenderness is restricted to the tested slenderness. (
18、2) Limitations of the length of a wall depend on the rules for the design of partitions in EN 15318. (3) Test results are valid for the tested thickness of the wall (t) and wall thicknesses equal to or greater than tested. 5.2.5 Connection systems (1) Test results according to EN 1364-1, using conne
19、ction system b) below are valid for the following connection systems: a) Head connection with a resilient strip: cork or mineral based, bonded underneath the top junction with a gypsum adhesive. The gap between the strip and the partition is filled with gypsum adhesive. The head angle is then covere
20、d with a joint tape; b) Head connection with polyurethane foam in situ expanded in the up to 20 mm top gap. After expansion and cutting the excess foam, the head angle is then covered with a joint tape bonded with a gypsum adhesive; c) Head connection with a mineral wool cord fitted in the gap at mi
21、d block thickness, and then finished with polyurethane foam as in b); d) 4 sides unrestrained: junction with a resilient strip, the same technique as in a). EN 15254-2:2009 (E) 11 a), b), and c) configurations are 1 side unrestrained, the 3 other sides are fixed edges where gypsum blocks are bonded
22、to the perimeter with gypsum adhesive. (2) Test results according to EN 1364-1 achieved with connection systems a), c) or d) are valid for all walls constructed with connections systems a), c) or d). 6 Report of the extended application analysis The Extended Application report shall be used in conju
23、nction with the classification document as specified in EN 13501-2 (based on tests according to EN 1364-1 or historic data) and shall contain the following: 1) Name of the Applicant. 2) Name of the expert body which has performed the extended application. 3) Type of the tested walls. This shall incl
24、ude a general description and any trade names of all the products involved. 4) Scope of the extended application. 5) Summary of the report(s) of the reference test(s) and previously granted extended applications, if available. NOTE This is a specially prepared summary and not necessary the brief sum
25、mary sometimes given as part of the test report or as a separate document. Alternatively, it is acceptable to append full copies of the relevant reports of the reference test(s). 6) The analysis of the extended application, writing including: source of any calculation model used; justification of th
26、e use of the calculation model for this particular extended application; list of any assumptions made, together with a justification for those assumptions; any supporting information and test references from other fire resistance tests (to European standards) or from historic fire resistance tests (
27、to national standards) or from ad hoc or small- scale tests. 7) The conclusion of the analysis, including the new classification of the fire resistance (EI, EI-M as appropriate). EN 15254-2:2009 (E) 12 Bibliography 1 EN 1991-1-2, Eurocode 1: Actions on structures Part 1-2: General actions Actions on structures exposed to fire 2 EN 771-5, Specification for masonry units Part 5: Manufactured stone masonry units - -