The wikipedia article above indicates that the durability of aquatic roman concrete is the result of a reaction between the lime and tufa >The seawater instant

The wikipedia article above indicates that the durability of aquatic roman concrete is the result of a reaction between the lime and tufa >The seawater instantly triggered an exothermic chemical reaction. The lime was hydrated – incorporating water molecules into its structure – and reacted with the ash to cement the whole mixture together.