Project
Flow coefficient of fine aggregates from Switzerland (VSS2005/403)
Funding origin:
Switzerland
STRIA Roadmaps:
Other ()
Transport mode:
Road
Transport sectors:
Passenger transport
Freight transport
Project website:
Duration:
Start date: 01/08/2006,
End date: 01/05/2015
Status: Finished
Funding details:
Overview
Background & policy context:
The flow coefficient of fine aggregates has been introduced in Switzerland in January 2005. At the present time, no corresponding national specifications can be determined because of a of lack experience. It is needed to provide the basic data to enable a reasonable and coherent definition of national specifications for the flow coefficient in Switzerland.
Objectives:
The objectives of the project are as follows:
- To determine the variability of the flow coefficient of fine aggregates from Switzerland
- To look for a possible correlation between flow coefficient according to EN 933-6 and aggregate shape according to the old SN 670 130
- To provide the basic data to define national specifications for the flow coefficient of fine aggregates
Methodology:
Following activities will be provided during the project:
- Parallel testing the properties of fine aggregates according to the old (particle shape / curve) and a new test method (flow coefficient)
- Clarification of possible correlations between the results according to the new / old test methods
- Production of bituminous mixtures with sand with strongly varying flow coefficient
- Investigation of the deformation behavior of sample mix depending on the flow coefficient of sands used
- Summarisation of recommendations for future demands on the flow coefficient of fine aggregates.
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