What are the differences between hydraulic and non-hydraulic concrete for sculptures?

When choosing concrete for sculptures, understanding the differences between hydraulic and non-hydraulic concrete is crucial. Hydraulic concrete hardens through a chemical reaction with water, making it highly durable and weather-resistant, ideal for outdoor sculptures. Non-hydraulic concrete, on the other hand, dries through evaporation and is less resistant to moisture, limiting its use to indoor applications. Hydraulic concrete offers faster curing times and greater strength, while non-hydraulic concrete is easier to work with for detailed artistic projects. Artists must consider these factors to select the best material for their creative needs.