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Impact of Changing the Dust to Binder Ratio Naga Shashidhar Aroon V. Shenoy.

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Presentation on theme: "Impact of Changing the Dust to Binder Ratio Naga Shashidhar Aroon V. Shenoy."— Presentation transcript:

1 Impact of Changing the Dust to Binder Ratio Naga Shashidhar Aroon V. Shenoy

2 Objectives n There is a recommendation to increase the dust (minus mm) to effective binder (P be ) ratio from 1.2 to 1.6 n This presentation summarizes the effect of this change on the mastic rheology using the data from TFHRC

3 G* Ratio n G* - Complex Shear Modulus (DSR) n G* Ratio =G* Mastic G* Binder

4 Dust to Binder Ratio G* Ratio

5 Dust to Binder Ratio G* Ratio

6 Observations n Changing the dust to binder ratio from 1.2 to 1.6: –Will increase the G* ratio range... –Which may reduce workability of the mix.

7 Observations n G* ratio could be looked at as a tool to determine which filler-binder systems is more prone to stiffening.

8 Observations n The behavior will be similar whether we look at G* ratio or viscosity ratio (Brookfield)


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