SIST EN 13301:2010

SIST EN 13301:2010 is the Slovenian adoption of EN 13301:2010 from CEN. It specifies a laboratory method for determining the staining tendency of bitumen, mainly for bitumen with a Ring-and-Ball softening point of at least 80 °C.

The method is used to compare a test sample with a material whose staining tendency is already known. In practice, it helps users judge whether a bitumen is more likely to separate oil components and stain adjacent materials during storage or use.

What does SIST EN 13301:2010 specify?

SIST EN 13301:2010 specifies one test method for staining tendency of bitumen and organizes it into Clauses 1 to 11: scope, normative references, terms and definitions, principle, apparatus, sampling, procedure, calculation, expression of results, precision, and test report.

The method applies to bitumen with a Ring-and-Ball softening point greater than or equal to 80 °C. For softer bitumen, the test conditions may be changed only by agreement between the parties involved.

The document also states that the method can be used for comparison with a known material. That matters when a user wants a practical pass/fail comparison or a relative ranking rather than only an absolute test result.

What are the key requirements of SIST EN 13301:2010?

SIST EN 13301:2010 measures the width of a stained circle formed around a bitumen sample after heating under controlled conditions. The result is expressed as a length and rounded to the nearest 0,5 mm.

Scope and sample suitability

The standard is limited to bitumen with the stated softening-point range. If a softer material is tested, the conditions must be agreed in advance, so users need to record any deviation clearly.

Sampling and preparation

Clause 6 requires sampling in accordance with EN 58 and preparation in accordance with EN 12594. Clause 7.1 then sets a controlled heating step for the bulk binder sample, including limits on time and temperature. In practice, this means the sample must be prepared consistently before the ring test begins.

Apparatus and ring condition

Clause 5 specifies square-shouldered rings as used in EN 1427, filter paper, a flat support plate, an oven, a thermometer and a measuring device. The rings must not be deformed, because the method depends on accurate dimensions and alignment.

Filling the rings

Clauses 7.2 and 7.3 give two equivalent procedures for filling the rings, and the laboratory may choose either one. Both require preheated rings, clean surfaces, two rings per sample, and trimming the excess bitumen flush with the ring face. That choice gives laboratories some flexibility, but the chosen procedure should be used consistently.

Heating and measurement

Clause 7.4 requires the assembled test piece to be heated at 80 ± 1 °C for 120 ± 1 h, on a shelf inside the oven. After cooling, four diameter measurements are taken on each stained circle, about 45° apart.

Calculation, reporting and precision

Clause 8 converts the average stained-circle diameter into the width of the stained ring, and Clause 9 reports the mean of the two test rings, rounded to the nearest 0,5 mm. Clause 10 gives repeatability and reproducibility information, which helps users judge whether two results are close enough to be comparable.

Test report

Clause 11 requires the report to identify the sample, cite the standard, state the result, note any deviation from the procedure, and give the test date. That makes the result traceable in laboratory and quality records.

What terms does SIST EN 13301:2010 define?

SIST EN 13301:2010 defines staining tendency as the tendency of oil components to separate spontaneously from bitumen. This is the main property being measured.

Ring-and-Ball softening point is the softening characteristic used in the scope to define which bitumen types the method applies to. It helps users judge whether the material is suitable for this test.

Repeatability is the closeness of results obtained under the same conditions by the same operator and apparatus. It matters when checking day-to-day consistency.

Reproducibility is the closeness of results obtained in different laboratories by different operators. It matters when comparing results between sites or suppliers.

Sample preparation is the controlled heating and handling of the bulk binder before filling the rings. It affects whether the test starts from a comparable state.

Who uses SIST EN 13301:2010?

SIST EN 13301:2010 is used by bitumen laboratories, quality-control staff, and suppliers or buyers who need to compare staining tendency in a repeatable way. It is also relevant to users of bitumen roofing products and other bituminous products where oil separation could stain adjacent materials.

The standard is useful when a laboratory needs to compare one bitumen against another, document a batch property, or support material selection and acceptance decisions.

What changed in SIST EN 13301:2010 from the previous edition?

SIST EN 13301:2010 supersedes EN 13301:2003. The foreword states three changes: the filter paper is now specified by technical characteristics instead of a commercial grade reference, two ring-filling procedures are now both allowed, and results are rounded to the nearest 0,5 mm.

Which standards are used with SIST EN 13301:2010?

EN 58 provides the sampling method for bituminous binders. It supports the representativeness of the material that enters the test.

EN 12594 provides preparation of test samples. It helps ensure the sample is conditioned before the staining test begins.

EN 1427 provides the Ring-and-Ball softening point method and the ring specification used for the test. It is needed for the rings themselves and for trimming excess bitumen.

What does the SIST EN 13301:2010 document contain?

SIST EN 13301:2010 contains the test principle, apparatus list, sampling instructions, two alternative ring-filling procedures, oven conditioning, and the calculation used to derive the stained-ring width. It also includes a figure showing the ring arrangement and the measured stained circle.

The document gives precision statements for repeatability and reproducibility, which users can use when comparing laboratory results. It also lists the minimum items for the test report so the result can be traced and repeated.