Technical Specification No.6

Transcription

1 Revisin index Date f implementatin B 16/10/2013 ASSOCIATION POUR LA CERTIFICATION DES MATERIAUX ISOLANTS 4, avenue du Recteur-Pincarré, Paris Cedex 16 Tel. 33.(0) Fax. 33.(0) ASSOCIATION REGISTERED (LAW OF 1ST JULY 1901) AS AN APPROVED CERTIFYING BODY NO. 19 (LAW 7823 OF 10TH JANUARY 1978) CSTB - LNE

2 Table f cntents TABLE OF CONTENTS PREAMBLE SPECIFIC TEST CONDITIONS VARIATION OF THICKNESS BETWEEN 50 KPA AND 2 KPA PRE-CLASSIFICATION AFTER 42 DAYS EXTENSION OF A PRODUCT TO A NEW FACTORY CLASSIFICATION BY DEFAULT FACTORY PRODUCTION CONTROL /4

3 1 Preamble The mechanical perfrmances f insulating underlayers are characterised and cded in accrdance with the specificatins in standard NF DTU f June In this DTU, the class f insulating underlayers is defined in appendix A after testing cnducted accrding t the methds described in appendix B, cmpleted belw if necessary. 2 Specific test cnditins 2.1 Variatin f thickness between 50 kpa and 2 kpa The test is perfrmed n 5 test specimens measuring mm, in accrdance with standard NF EN by determining the thicknesses under a lad f 50 kpa (dc) and after unlading fr 120 s under 2 kpa (db). The variatin in thickness is equal t db dc. 2.2 Pre-classificatin after 42 days A first classificatin can be made by extraplating the results btained after 42 days t 123 days. This classificatin is recrded n the certificate. After the 123 days f testing, the classificatin is reviewed accrding t the final results btained. 2.3 Extensin f a prduct t a new factry In the case f a prduct extended t anther factry, a 42-day creep test is perfrmed. At the end f the 42-day tests, the defrmatin trend is cmpared t the results btained at the 1 st factry. The certificate can be extended if the classificatins are identical. In this case the test is stpped after 42 days. 2/4

4 2.4 Classificatin by default Classificatin granted withut testing: The certificate may be delivered with the classificatins belw withut testing. Prduct maximum thickness classificatin EPS > 13 kg/m3 100 mm SC2a4 EPS > 24 kg/m3 Prduct maximum thickness classificatin XPS PUR Classificatins granted with subsequent verificatin The certificate may be delivered with the classificatins belw. A verificatin test is systematically perfrmed. At the end f the verificatin test, the classificatin is reviewed accrding t the results btained. Prduct maximum thickness classificatin EPS > 13 kg/m3 120 mm SC2a4 EPS > 24 kg/m3 120 mm SC1a4Ch XPS 120 mm SC1a4Ch PUR 120 mm SC1a4Ch 3/4

5 3 Factry prductin cntrl Fr all the prducts, when the SC1 r SC2 class is certified, the fllwing tests are perfrmed accrding t the prcedures in this Technical Specificatin: length and width, thickness, density 1 : Once every 2 hurs cmpressin resistance (1 f the 4 pssibilities 2 belw): Once a day 3,4 measurement f the d B d C n 3 test specimens measurement f the d L d B n 3 test specimens fr SC2 prducts: Once a day 5,6 measurement f cmpressibility accrding t NF P n 3 test specimens measurement f cmpressin resistance accrding t NF EN n 3 test specimens measuring 100 x 100 mm minimum behaviur under pint lad n 3 test specimens. If 4 < x 5 mm and 8 % < x 10 %: Once a week 9 tear resistance accrding t NF EN 12310: nly if the results f type testing are less than 30 N: Once a week dynamic stiffness: simplified methd derived frm NF EN fr prducts classed A: Once per day f manufacturing. L W accrding t NF EN ISO 140-8: randm verificatin (frequency t be defined n a case by case basis at the initiative f the leader member accrding t the infrmatin in the dssier and the cntrl results). 1 The frequency fr density nly applies systematically if the density is used as an indirect test. 2 A crrelatin must be established with regard t type tests n a case by case basis. The surfaces f the test specimens may be sanded r cvered. 3 Fr prducts which are manufactured discntinuusly, the frequency may be nce per batch (maximum 250 m 3 ) 4 The first threshlds at 250 Pa and 2 kpa (see ) may be limited t 5 secnds. 5 Fr prducts which are manufactured discntinuusly, the frequency may be nce per batch (maximum 250 m3) 6 Threshlds 1 and 2 may be limited t 5 secnds 7 Test pssible under a lad f 40 kpa fr 24 hurs, n cnditin that the methd is cnstant and can be reprduced. The test is perfrmed either with test specimens measuring 300 x 300 mm (with edge effect) r 200 x 200 mm (withut edge effect). 8 The test can be used in a range f 2 t 10% defrmatin r t breakage. 9 Fr prducts which are manufactured discntinuusly, the frequency may be nce per batch (maximum 250 m 3 ). 4/4