Secure it with Sakrete
Sakrete makes products specially formulated for anchoring items such as bolts or railing as well as for cement mixes for setting fence posts.
Anchor Cement is a fast-setting, general purpose grouting material designed to anchor bolts or railings into concrete for a super tight grip.
Fast Setting Concrete Mix is formulated for setting fence posts quickly and easily. Simply pour the mix into the hole and add water. The product sets in minutes, allowing fence to be hung the same day.