Sand equivalent of road aggregates tested with European and American standards and methylene blue results
Sand equivalent (SE) and methylene blue (MB) tests are two of the basic tests for determining the cleanliness of the aggregates. Until the introduction of European Standard EN 933-8 the sand equivalent test was carried out by the American specification AASHTO T-176. Hence the limited values set in most national specifications have been established according to the test procedure described in the American standard. The European standard differentiates mainly on the size of the fine aggregates sample tested. The methylene blue test is specified by the European standard EN 933-9. The test is carried out on a 0/2mm particle size, while the fraction 0/0.125mm can also be used. A brief discussion of the tests mentioned above and the main differences between them for the sand equivalent test are outlined. Then SE and MB results are presented from a great number of crushed aggregate materials used in road construction in Greece. No correlation was found between sand equivalent and methylene blue values. For the covering abstract see ITRD E133040.
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Authors:
- NIKOLAIDES, A F
- MANTHOS, E
- Publication Date: 2007-4
Language
- English
Media Info
- Serial:
Subject/Index Terms
- TRT Terms: Aggregates; Conferences; Grain size (Geology); Standards
- Identifier Terms: European Union
- Uncontrolled Terms: Methylene blue test; Particle size distribution
- Geographic Terms: United States
- ITRD Terms: 4577: Aggregate; 8525: Conference; 8303: EU; 6250: Methylene blue test; 6200: Particle size distribution; 187: Specification (standard); 8122: USA
- Subject Areas: Geotechnology; I36: Aggregates;
Filing Info
- Accession Number: 01076275
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- Files: ITRD
- Created Date: Sep 18 2007 10:36AM