G-slag

G-Slag turns an industrial by-product into a functional material for the built environment.

At its core, the product is about material substitution and performance. Instead of treating blast furnace slag as a material that simply needs to be managed, G-Slag prepares it for productive use in construction and infrastructure systems.

Its glass-rich structure gives the material its key functional character. When incorporated into suitable cementitious formulations, G-Slag can participate in the development of construction materials while allowing manufacturers to reduce their dependence on conventional mineral inputs.

For cement manufacturers, G-Slag can serve as a supplementary material within cement formulations. For concrete producers, it can be incorporated into appropriate mix designs. Its application can extend further into precast products, infrastructure materials, road-base systems, and soil stabilization.

The value of G-Slag is therefore not limited to what the material is. It lies in what it allows manufacturers to make.

Built for Construction Applications

G-Slag is designed around the requirements of industrial construction rather than being positioned simply as an alternative raw material.

Its controlled composition and granular form make it suitable for integration into established manufacturing and formulation processes. Depending on the application and required performance, it can become part of cementitious systems, concrete products, precast elements, and infrastructure materials.

This gives manufacturers flexibility to incorporate recovered industrial material without creating an entirely new product category or application.

A Material With Multiple End Uses

One of the strengths of G-Slag is its versatility.

It can move across different parts of the construction value chain:

Cement → Concrete → Precast → Infrastructure → Stabilization

This makes it relevant to cement manufacturers, ready-mix concrete producers, precast manufacturers, infrastructure contractors, and other industrial users working with mineral-based construction materials.

Designed Around Material Efficiency

Modern construction increasingly requires materials that can deliver required performance while making better use of available resources.

G-Slag addresses this from the material side.

By converting blast furnace slag into a usable, specification-controlled product, it creates an additional source of material for construction applications. This supports the broader shift toward using industrial by-products as functional inputs rather than treating them solely as waste.

Product Characteristics

G-Slag combines a high glass content with a controlled mineral composition and defined particle size. These characteristics give manufacturers a predictable material starting point when developing cementitious or construction formulations.

The product has:

• 93.25% glass content

• 6–16 mm particle size

• Controlled CaO, SiO₂, Al₂O₃ and MgO composition

• 12% free moisture

• 0.20% loss on ignition

The exact formulation and application should be determined according to the end product, processing conditions, and required performance.

The Product Proposition

G-Slag is ultimately about turning an industrial material stream into a usable construction input.

It connects steel production with construction by taking material generated upstream and preparing it for applications downstream.

That makes G-Slag more than just granulated slag. It is a construction-oriented material designed for integration, performance, and resource efficiency.