"Yes"

From a glass making point of view you don't want them messing with expansion coefficients and bulk properties so they're off the table there - it's a waste of energy to reheat them up to ~ 1,000 C.

But you do end up with large volumes of glass .. a relatively consistant material, you might want to crush and tumble that (to take the sharp edges away) and use that sized grit | frit as driveway material, as additive to concrete where structurally sound, as fish tank "sand", etc.

IIRC concrete aggregate should be jagged so that it interlocks with itself. You actually can't just use any old sand, you need sharp sand, which is an increasingly scarce resource.

My bad .. mentally insert more commas and juggle the clauses :-)

The tumbling was only meant to be applied to application requiring rounded grit, you're correct that concrete and other uses might prefer jagged.

"you need sharp sand"

Hmm, practical concerns about acquisition aside, would lunar dust work?

Yes:

https://en.wikipedia.org/wiki/Lunarcrete