The4thseal,
BYK A-525 works by pushing air bubbles up. Most dramatic effect is in epoxy/hardener mix, which typically is full of air. With A-525 there will be almost none. To get the result with highly filled mixtures you need to shake it well- I have yet to test it with proper device. But I've seen some void reduction, about 50%- with only modest shaker. Is it worth getting for your machine- definitely. You only need vial or two. For testing? Probably not. Samples are too small to get the vibration and mass effect- you won't see added mechanical strength.
For sample just go to their global website, find product and click 'sample'. Use 0.3-0.5% of total mix including aggregate.
Cheers!