BS EN 15254-2-2009 耐火测试结果的扩展应用.非承重墙.砌体和石膏砌块.pdf
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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
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- BS EN 15254-2-2009 耐火测试结果的扩展应用.非承重墙.砌体和石膏砌块 15254 2009 耐火 测试 结果 扩展 应用 承重墙 石膏 砌块
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