EN 1296-2000 pdf download.Flexible sheets for waterproofing — Bitumen, plastic and rubber sheets for roofing — Method of artificial ageing by long term exposure to elevated temperature.
This EN 1296 describes the principles, the apparatus and the procedure related to artificial ageing by the use of thermal ageing by long term exposure in a ventilated oven at elevated temperature.
2 Normative references
This European Standard incorporates by dated oi- undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest editions of the publication referred to apply (including amendments).
EN 1850-1, Flexible sheets for waterproofing — Determination of visible defects — Part 1: Bitumen sheets for roof waterproofing
prEN 1850-2:2000. Flexible sheets for waterproofing — Determination of visible defects — Part 2: Plastic and rubber sheets for roof waterproofing
prEN 13416:1998 Flexible sheets for waterproofing — Bitumen, plastic and rubber sheets for roof waterproofing
— Rules for sampling
3 Terms and definitions
For the purposes of this standard, the terms and definitions in prEN 13416:1998 and the following apply.
3.1
top surface
upper side of the sheet, as used In situ or as indicated by the manufacturer. It is usually the inside of the roll
4 Principle
Samples for assessment are stored up to 24 weeks at elevated temperature. The evaluations to be perfonned before and after thermal ageing and the exposure duration are defined in the relevant European Standards on definition and characteristics for bitumen, plastic and rubber sheets.
5 Apparatus
Ventilated air oven, regulated in such a way that the test specimen can be maintained at a constant temperature of (70 ± 2) °C during the full test duration. The temperature calibration procedure Is described In A.1. Details on the air flow are given in A.2.
6 Sampling
Samples shall be taken in accordance with prEN 13416:1998.
7 Test specimens
Test pieces of sufficient size and number shall be taken from the samples to allow the evaluation tests to be performed.
To avoid edge effects test specimens for the evaluation tests are cut from test pieces only after thermal treatment.
Normally, initial evaluation tests are performed before exposure. If this is not the case sufficient reference material shall be stored in dark conditions at (23 ± 2) °C and (50 ± 10) % relative humidity for the evaluation testing at the same time as the exposed material
8 Procedure
Set the oven to maintain a temperature of (70 ± 2) °C.
Lay down the test specimens horizontally in the oven, their top face being exposed to the air. The bottom face shall lay on an antiadhesive and continuous support, normally a sheet of siliconized paper.
The exposure duration is defined by the relevant product specification. It shall lie in the range indicated in Table 1.
9 Expression of results and precision
9.1 Expression of results
Visible changes of the samples shall be reported. The expression of all other results shall be in accordance with the European Standards specifying the evaluation test methods.
9.2 Precision
Precision is not defined by this standard.
NOTE This method only describes an exposure procedure and does not produce data values. Precision is dependent on evaluation tests.
10 Test report
The test report shall indude at least the following information:
a) all details necessary to identify the product tested;
b) reference to this European Standard (EN 1296) and any deviation from lt
C) information on sampling in accordance with clause 6;
d) information on the preparation of the test specimens in accordance with clause 7;
e) information on the procedure in accordance with clause 8, including the applied exposure duration;
f) test results in accordance with dause 9;
g) date of the test.EN 1296-2000 pdf download.