In Britain I used to use Rawl bolts and changed the zinc plated bolt for a stainless steel Allen head one.
I think they may be called expanding bolts or concrete anchors in US?
They have several advantages over the pressed tin or expanding rubber. The extra weight damps down vibration in bars and the extra grip means they never slip. (even if you drop bike on them) I may have one if you need a picture for reference.
PJ