Disclosed are a polymer cement-granite composite tomb box and a preparation method thereof. The tomb box has a layered structure or an upper-lower composite structure, where the layered structure is composed of one or two layers of granite slabs and one layer of the polymer cement, and an upper portion of the upper-lower composite structure is made of granite slabs, and an lower portion of the upper-lower composite structure is made of the polymer cement or a combination of the polymer cement and the granite slabs.

Disclosed are a polymer cement-granite composite tomb box and a preparation method thereof. The tomb box has a layered structure or an upper-lower composite structure, where the layered structure is composed of one or two layers of granite slabs and one layer of the polymer cement, and an upper portion of the upper-lower composite structure is made of granite slabs, and an lower portion of the upper-lower composite structure is made of the polymer cement or a combination of the polymer cement and the granite slabs.

A calcium aluminate cement protective coating is resistant to sulfuric acid and can be used as a lining to protect surfaces in sulfur storage vessels and sulfuric acid storage vessels. The protective coating can include calcium aluminate cement, calcium aluminate based synthetic aggregates, and water. The protective coating is resistant to sulfur and sulfuric acid attack, and thus can be used to protect surfaces inside sulfur storage pits, sulfur storage tanks, and sulfuric acid storage containers.