I was trying to repair a cracked chiminea ( outdoor fireplace). I have "Quikkrete" quick-setting cement. I was wondering if this would be okay to use to patch and seal the cracks and hold against high temperatures when I have fires. Could someone please offer any advice on what type of pottery/clay sealing bondage product that is fire resistant, if I should not use this stuff and what maybe I should be using?? I'm not that knowledgeable with this kind of DIY home fix.