How does marble’s calcium carbonate content affect acid resistance in outdoor trash cans?

Marble's calcium carbonate content significantly compromises acid resistance in outdoor trash cans, making them vulnerable to environmental damage. As a carbonate mineral, marble reacts readily with acidic substances like acid rain, bird droppings, or spilled liquids, causing chemical erosion. This reaction dissolves the surface, leading to visible etching, loss of polish, and permanent staining. Over time, this degradation weakens the structural integrity of the trash can, reducing its lifespan in outdoor settings. For durable outdoor use, materials with lower calcium carbonate content or protective sealants are recommended to mitigate these acid-related effects.