Slag cement shipments in 2019 increased 10.8% over 2018 totals, says the Slag Cement Association (SCA). This marks the fourth consecutive year of double-digit growth in shipping totals across the United States. 

SCA attributes this rise in part to slag’s measurable benefits in concrete, including better workability and finishability, reduced thermal stress, higher compressive and flexural strengths, and improved resistance to aggressive chemicals.

“We have seen a substantial increase in slag cement use as concrete professionals become more and more familiar with the product,” said Ed Griffith (St. Marys Cement/Votorantim Cimentos) and President of the Slag Cement Association. He is also 2nd Vice-Chairman of the ACPA Board of Directors.

Reducing the carbon impact of concrete is becoming an important factor in construction material choice.  Slag cement is a recovered material from the iron production process and because of this, reduces the environmental impact of concrete mixtures by decreasing carbon footprint, embodied energy and the use of non-renewable materials. 

Photo: I-96 Reconstruction project near Livonia, MI, used 42,000 tons of portland cement and 20,000 tons of slag cement.  (Photo and information provided by SCA.)