welcome to sr.
i'm a recovering crack addict married but separated from an active crack addict. what the others are saying is so true +some. from the sound of your post you are in serious danger. please find a safe place for yourself. talk to a women's shelter or a domestic violence counselor.
the only thing i know to stop the cravings is to stop using and thats something only he can do for himself.
btw, i'm one of those girls that stuck around long enough to get physically hurt by my ah of 23yrs in a crack induced wide eyed zombiefied comatose crack attack, well thats how he seemed to me. he was just not in there, he turned into SOMETHING else, something inhuman right before my eyes. protect yourself.