Quote:
Originally Posted by PR-Giants
As far as the average particle size theory goes ...
Visualize a container filled with baseballs. Then remove enough baseballs so that some basketballs can be added.
Does the amount of airspace between the balls increase or decrease?
Is the airspace based on the largest particle size, the average particle size, or the smallest particle size?
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Good point - when you put it that way it seems clear to me the airspace, at least within the mixture as a whole and assuming the basketballs aren't clumped by themselves in one part of the mix, would decrease.
Which would mean the airspace within the mix would be dependent on the smallest particle size, again, assuming the conglomerate was well mixed and/or the smaller particles were allowed to fill in the spaces between the bigger particles.
So, if I understand your point, in general for increasing aeration in any given mix (we'll keep it simple for the moment and assume a rock/sand mix), mixing larger particles into a mix with smaller ones likely won't achieve that. Or, at least not to the degree one might desire when attempting to maximize aeration.