Master X-Seed STE

Unique Strength-enhancing Concrete Admixture

The pioneering hardening accelerator Master X-Seed STE improves both early and late strength development of concrete while reducing your environmental impact.

How does Master X-Seed STE work?

Master X-Seed STE is based on a unique C-S-H seeding technology that accelerates the growth of active calcium silicate hydrate crystals between cement grains, thus improving the hydration process and consequently increasing the early and late strength development.

What makes Master X-Seed STE unique?

The Master X-Seed STE mechanism of action significantly improves both early and late strength development of concrete. It allows the optimized exploitation of raw materials and thus supports sustainable construction. The introduction of Master X-Seed STE enables you to substitute up to 15% by weight with limestone filler while keeping the same early and late strength development of concrete.

Reduce your environmental impact: Reduce the cement content of your concrete mix and the associated CO2 emissions, while maintaining compressive strength.

Increase your productivity: The innovative admixture enables earlier stripping and reuse of your formwork, resulting in a fast and cost-efficient production.

Improve the durability properties of your concrete mix: Using higher amounts of limestone filler or supplementary cementitious materials (SCMs) will in turn extend the service life of your concrete.

Get more design freedom: The reliable strength development offers you more engineering and design flexibility.

Master X-Seed STE at a glance​

• ​Improved cement hydration

• Increased strength development - both early (1-day) and late (28-day) strength

• Enhanced workability of high-performance concrete mixtures

• Reduced cement heat hydration due to the use of a minimum required cement quantity (especially for mass concrete pouring)

• Enables greater use of limestone filler or SCMs that improve the environmental footprint of a structure

• Improved strength consistency of concrete even when produced with variable raw materials

• Increased strength safety factor

The sustainable solution for ready-mix and precast applications

Master X-Seed STE is suitable for all types of applications and especially for mass concrete constructions, or precast elements where low heat of hydration is required during concrete hardening.

• ​Concrete with high amounts of SCMs

• Solid constructions, e.g., bridges, foundation slabs, concrete blocks

• High strength concrete, e.g., wind turbine towers, containments

• Manufactured concrete products, e.g., hollow core slabs, paving stones​