I'm trying to affix a ground-anchor to my garage floor (for chaining things to.
It was supplied with Rawl bolts and the instructions stated to drill a 16mm hole into the concrete and then tap the bolt into the hole.
I followed the instructions to the letter (1 minor deviation described later)
The Rawl bolt is like this:
Here's where the trouble comes in - I didn't "tap" the bolt into the hole - I gave it a good, solid hammering - I've used these things before and widened the hole to allow that bolt to go in easier - but then found that it didn't hold firmly enough when tightened and whatever it was fell down... So this time I decided that I'd make it a snug fit and ended up giving it a good bashing to get it in - what I didn't realise was that it wasn't the diameter of the hole that was the problem, but rather the build up of concrete dust that I'd left in the hole after drilling.
Here's the situation:
The real problem is that there was concrete dust sitting in the bottom of the hole - by hammering the bolt holder into the hole to try and get it flush with the garage floor - 2 things have happened:
1) The cone shaped bit at the bottom has been forced up in the bolt holder - forcing the leaves outwards (as is it's purpos) and jamming the holder into the hole in the concrete. The standard advice on this is to tap the conical piece down again - but I don't think this is possible as it's got compacted concrete dust under it.
2) The threaded hole in the conical piece is full of concrete dust, so I can't screw the bolt into it - it goes in about 1.5 turns, then jams up on concrete dust - I can see this from the threads on the bolt when I remove it.
Does anybody have any suggestions on how to:
a) Suck the concrete dust out of the hole?
b) Get the bolt holder out of the hole altogether so that I can start afresh?