Several additives can enhance the strength of concrete, each working in a different way:

Supplementary cementitious materials (SCMS)

Disse omfatter bl.a flyveaske, slag, og Silica røg. They react with the byproducts of hydration (the chemical process when cement hardens) to form additional cementitious compounds, densifying the concrete and increasing strength.

Superplastificeringsmidler

Disse tilsætningsstoffer forbedrer betonens bearbejdelighed, allowing for a lower water-to-cement ratio. Since excess water weakens concrete, superplasticizers indirectly contribute to a stronger final product.

Fiber reinforcement

Steel or synthetic fibers dispersed in the concrete mix improve its tensile strength and resistance to cracking, especially from shrinkage or impact.