ENVIROCore 100

Holcim (New Zealand) Ltd is a leading supplier of cement and aggregates 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.