BS EN 1427:2015 – TC:2020 Edition

$134.27

Tracked Changes. Bitumen and bituminous binders. Determination of the softening point. Ring and Ball method

Published By	Publication Date	Number of Pages
BSI	2020	43

Guaranteed Safe Checkout

Category: BSI

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

This European Standard specifies a method for the determination of the softening point of bitumen and bituminous binders in the range of 28 °C to 150 °C. Technical warning – The change from mercury thermometers to electronic temperature devices has revealed that the temperature definition in the mercury thermometer has not been precise enough to make a correct, unbiased transfer to electronic devices. Care should be taken for softening points ring and ball above 100 °C as the condition may have changed from previous practise to present days testing equipment. Below approx. 100 °C the difference in temperature readings between electronic and mercury stem thermometer is acceptable compared to the repeatability of this test methods. [Reference: ASTM E20 Group] NOTE The method described is also applicable to bituminous binders that have been recovered from bituminous mixes, e.g. by extraction. WARNING — Use of this European Standard can involve hazardous materials, operations and equipment. This European Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this European Standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

PDF Catalog

PDF Pages	PDF Title
26	Foreword
27	1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Reagents and materials 5.1 General
28	5.2 Bath liquid 5.2.1 Distilled or deionized water 5.2.2 Glycerol, with a density (1 250 ± 10) kg/m3 at 20 C, with a 99 % mass fraction purity. 5.3 Release agent, mixture of glycerol and dextrin or mineral talc, or another commercially available release agent. 6 Apparatus 6.1 Ring and Ball apparatus,
29	6.2 Calibration/Verification
30	7 Preparation and preservation of laboratory samples and test samples 8 Procedure and reporting
32	9 Expression of results 10 Precision 10.1 Repeatability 10.2 Reproducibility Table 1 — Precision
33	11 Test report
34	Figure 3 — Ball centering guide (examples)
35	Figure 4 — Ring holder (A)
37	Annex A (informative) Characteristics of thermometers
38	Annex B (informative) Examples of valid and invalid temperature gradients B.1 Examples B.1.1 General B.1.2 Example 1 Bath liquid: Water Table B.1 — Examples of valid and invalid temperature gradient for water as bath liquid. Invalid part of Test 2 is shown in bold letters
39	B.1.3 Example 2 Bath liquid: Glycerol Table B.2 — Example of valid temperature gradient for glycerol as bath liquid
40	Table B.3 — Example of invalid temperature gradient for water as bath liquid. Invalid part of Test 2 is shown in bold letters
41	Bibliography