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Jämförande provning – ballast 2017: micro-Deval och Los Angeles
Swedish National Road and Transport Research Institute, Infrastructure, Pavement Technology.ORCID iD: 0000-0002-6989-6488
Swedish National Road and Transport Research Institute, Infrastructure, Infrastructure maintenance.ORCID iD: 0000-0002-5306-2753
2018 (Swedish)Report (Other academic)Alternative title
Interlaboratory comparison - aggregate 2017 (English)
Abstract [sv]

Detta notat redovisar resultat, precisionsdata och viss statistisk analys från jämförande provning mellan ett antal laboratorier i Sverige. De metoder som ingått i analysen har varit: motstånd mot nötning, micro-Deval (våt) enligt SS-EN 1097-1 och motstånd mot fragmentering, Los Angeles enligt SS-EN 1097-2. Antalet deltagande laboratorier har varit 37 för micro-Deval respektive 34 för Los Angeles.

Tre material ingick den jämförande provningen (ringanalysen). De levererades i sorteringarna 8/11 mm och 11/16 mm. Laboratorierna skulle ur dessa sorteringar framställa analysfraktionen 10–14 mm.

Resultaten för micro-Deval var snarlik för alla tre materialen med medelvärden i intervallet 6–8. Likaså var det snarlika nivåer för spridningen (standardavvikelsen) för de tre materialen.

För Los Angeles hade ett material medelvärdet 12 de andra två hade medelvärden kring 26–27. Nivåer för spridningarna följer medelvärden vilket även visar sig i variationskoefficienten som ligger på ca 5-6 %.

Abstract [en]

This report shows results, some statistical analysis and precision data for interlaboratory comparison (round robin) in Sweden performed on three materials of aggregate during 2017. The properties that was determined was resistance to wear by wet micro-Deval test (EN 1097-1) and resistance to fragmentation, Los Angeles test (EN1097-2). The number of participating laboratories were for micro- Deval 37 pcs. and for Los Angeles 34 pcs.

There were three materials used for this comparison, the materials were called F, S and V. They were delivered to the participating laboratories in the grading 8/11 mm and 11/16 mm for each material. The laboratories should then generate the proper analyze fraction of 10/14 mm.

The average results for micro-Deval were at the range of 6–8 for all of the materials. The standard deviations were also similar (0,43–0,50).

For Los Angeles there were the average for one of the materials at 12 and for the other two materials the averages were around 26–27. The standard deviations are proportional to the averages.

Place, publisher, year, edition, pages
Linköping: Statens väg- och transportforskningsinstitut, 2018. , p. 44
Series
VTI notat ; 18-2018
Keywords [en]
Test method, Group analysis (test), Aggregate, Properties, Los Angeles test, Wear, Laboratory (not an organization)
National Category
Infrastructure Engineering
Research subject
50 Road: Materials, 56 Road: Aggregate and stone materials
Identifiers
URN: urn:nbn:se:vti:diva-13302OAI: oai:DiVA.org:vti-13302DiVA, id: diva2:1251219
Available from: 2018-09-26 Created: 2018-09-26 Last updated: 2019-06-04Bibliographically approved

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Arvidsson, HåkanEriksson, Olle

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CiteExportLink to record
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