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.
No, Portland cement products do not tolerate much heat. Hardware type stores should have some products for use on flue pipes .
Of course mortar is heat resistant.
All the properties, cement, lime, sand, etc, are naturally heat resistant. However, mixing and applying the mortar can be enhanced by following a few extra steps. See link: