ENVIROCore 100

Holcim (New Zealand) Ltd is a leading supplier of cement, aggregates and ready-mix concrete in Aotearoa New Zealand. Holcim New Zealand’s involvement in the New Zealand building industry dates back to 1888. Holcim NZ is part of the regional Holcim Australia/NZ business and the global Holcim Group; a global leader in innovative and sustainable building solutions driven by its purpose to build progress for people and the planet.

Granulated Blast Furnace Slag (GBFS) is an industrial by-product from the steel-manufacturing process. It is obtained through rapid cooling of molten iron ore slag, which creates a hydraulic material that is naturally cementitious and high in calcium silicate hydrates (C-S-H), a compound that increases the strength and durability of concrete. The GBFS is ground at Holcim NZ’s Low Carbon Cement Import and Distribution Facility in Auckland to produce a Ground Granulated Blast Furnace Slag (GGBFS) product. ENVIROCore 100 is a supplementary cementitious material available in bulk.

This EPD presents a ‘cradle-to-gate’ assessment of the environmental impacts of ENVIROCore 100. It covers from by-product collection in Japan, transportation to the import terminals in NZ, and ends with regional depot operations. The life cycle assessment provides quantitative, objective and third-party verified data, which Holcim NZ is able to utilize to continuously improve its products and processes.

ENVIROCore 100 meets the requirements of AS3582.2:2016 Supplementary Cementitious Materials, Part 2: Slag – Ground Granulated Blast Furnace.

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