Why does my outdoor, stone fire pit keep cracking along the same joint. Any

  • Thread starter Thread starter Daniel S
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Daniel S

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masons out there? I recently had a white stone (Ashlar chopped) fire pit installed in my backyard with fireproof bricks on the bottom. Several holes on the first course of stone for air circulation, and a circular stone cap-cut into triangles and pieced together with Type S(strong) white mortar. The entire fire pit was pieced together with Type S mortar. It cracks after burning a fire in it. It has been cracking in the same spot, all the way from the bricks on bottom to the stone cap on top after a burn. I have had it repaired 3 times, but it keeps cracking in the same spot. What could be happening? Please help!!
 
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