[AZTLANLC]

I think manufactures are switching to concrete sand based on ICPI specifications, but some don't even have a certain clue on why not to use stone dust, I was on a hands on training seminar the other day for a new manufacturer in my area and when they talked about stone dust and concrete sand I felt it was absurd, they said because stone dust has more sharp end it will fracture pavers after final compaction, they even had a drawing to explain that and passed along samples of both the concrete sand and stones dust, some people were saying whoooa that is true!.
If stone dust is able to crack pavers I'm pretty sure it has more to seee with the quality of them, cause I have being using 1/4" gravel for my bedding base the last couple season and have not seeing pavers cracking unless there is a big enough stone underneath.