Mutt and all,
I am under the impression that clutter charts and clutter correction not so much relates to runway friction as it does for the aircrafts acceleration characteristics with the "restriction" of clutter -standing water, slush, non-compacted/wet snow, etc.
For example, an aircraft would actually accelerate (slightly) faster on a runway with a very low co-efficient of friction with no clutter (glare ice). V1 would be reached sooner in time and position on the runway. Stopping in this situation would be another matter altogether. Clutter relates to the restriction of the aircraft to accelerate to takeoff speeds. Although a cluttered runway implies reduction in coefficient of friction, the clutter itself would actually help the aircraft decelerate in the case of rejected takeoff.