Monteiro, S. M. C. S.Jorge, MuanassaHeleno, M. L.Oliveira, N. S.Alves, M. L.Veiga, A.Silva, A.2026-03-302026-03-302023-06Monteiro, S., Oliveira, N. S., Alves, M. L., Veiga, A., & Silva, A. (2023, June 18–23). Sustainability study of limestone quarry waste into value-added products: PCC and GCC. In Proceedings Book, 7th Global Stone Congress (pp. 424-430). Batalha, Portugal.978-972-778-327-4http://hdl.handle.net/10400.8/16046Global Stone Congress 2023, 7th editionGlobal Stone Congress 2023, 7th edition.The authors express appreciation to the StonebyPortugal- Plano de Recuperação e Resiliência «Agendas para A Inovação Empresarial», Portaria n.º 43-A/2022 January 19th, for the support on their work.Calcium carbonate can be obtained naturally from limestone, chalk, marble, and other sedimentary rock forms. Ground calcium carbonate (GCC) and precipitated calcium carbonate (PCC) are two materials that can be produced from natural calcium carbonate. The future of GCC and PCC is promising since they are linked to industries with high demand, such as packaging, building & construction, transportation, and industrial applications, with an expected compound annual growth rate higher than 4% until 2027. This research focuses on the production of GCC and PCC through a comparative analysis that identifies the macro conditions that become advantageous to produce and commercialising PCC in a quarry context. This allows a valorisation of the limestone waste resulting from the extraction operations, converting it into by-products of the process. Not all existing limestone quarries in the Serra de Aire e Candeeiros region are suitable sources of raw material to produce PCC. The five extraction poles were identified with the potential for extracting suitable raw materials, associated with several companies dedicated to the extraction operation in these quarries.engPrecipitated calcium carbonateGround calcium carbonateLimestone wasteconference paper