Delta ring and ball test of filler for bituminous mixtures

6 Delta ring and ball test of filler for bituminous mixtures 

This test determines the stiffening effect of filler when mixed with bitumen. More information about the test is given in CEN EN 13179-1 (2000). 

The test is normally performed on fillers that will be used in mastic asphalt applications. However, useful information may be provided for other asphalt performance criteria (Vansteenkiste and Vanelstraete 2008). 

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