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Ground Granulated Blast-Furnace Slagخبث فرن الصهر العالي الحُبيبي المطحون

Ground Granulated Blast-Furnace Slag

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Ground Granulated Blast-Furnace Slag

Ground-granulated blast-furnace slag (GGBFS) is a by-product of iron and steel-making obtained by quenching molten iron slag from a blast furnace in water or steam. Used to increase the strength of concrete and used to improve workability of fresh concrete and reduce water demand, shrinkage and permeability of the finished product.

Technical Specifications

Where it comes from? By-product of ironmaking process that would otherwise go to landfill
Final appearance of concrete Generally lighter
Compatible with admixtures? Yes
Need to cure? Yes
Sulfate Protection? ✓✓
More cohesive? ✓

Relevant Information

Key information to support the proper use of the product. It includes important guidance based on the material's specific characteristics, helping you follow best practices and make informed decisions during use and handling.

Sustainability

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Making cement is energy intensive, generating up to 176 kg CO2 for each tonne of concrete manufactured. Because Ground-granulated blast-furnace slag (GGBS or GGBFS) is a lower carbon building material, it's considerably more environmentally friendly. The reduction of in greenhouse gas emission can be as high as 45%, depending on the mix and application. GGBFS has less embodied carbon allowing you to meet increasingly tough sustainability requirements. It's the product you need to improve the built environment whilst lessening your impact on the natural one.

Sustainability is one of the factors driving the spread of GGBFS across the UAE following the Dubai Green Buildings Regulations (DM Circular no. 198) introduced back in 2010 creating a health-friendly and sustainable environmental development and protection.

Workability

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GGBS are great to work with. You’ll find them easier to handle, pump and place with precision – even in adverse weather conditions. And their chemical composition reduces the risk of problems and unwanted chemical reactions.

Improved handling
• Less water required for a given workability.
• Better pumping properties due to increased cohesion of the mix.
• Easier to compact.

Chemical features
• Less free lime content reduces permeability and promotes long term strength.
• Reduced alkalinity of concrete minimises risk of alkali-silica reaction.
• Lower heat of hydration reduces risk of early-age thermal cracking.

Enhanced working window
• Longer setting time means more time for getting the right finish.
• Helps you avoid cold joints, a major benefit for large or mass concrete pours.

Building a Better Future
Cemex is an industry-leading global construction materials and solutions company that drives innovation to help the world reach the next frontier of sustainable living. With our 100-plus year heritage, we are committed to achieving carbon neutrality through relentless innovation and industry-leading research and development. We stand at the forefront of the circular economy in the construction value chain and pioneer ways to increase the use of waste and residues as alternative raw materials and fuels in our operations. With a digitally enabled customer experience, we offer cement, ready-mix concrete, aggregates, and urbanization solutions in growing markets around the world.
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