We are in the process of fitting posts and railings, supporting glass around our recently constructed patio. The posts are bolted to the ceramic patio slabs by drilling 4 holes per post through the 20mm ceramic tiles and a further 100mm into concrete block beneath the ceramic tiles. Into these holes are placed 8mm studding, the post is then placed over the studding and bolted down. The question is, what resin is best to hold these bits of 8mm studding in place in the hole.