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EPD: Hardening accelerators, 1.1 -1.18 kg/l, Master X-Seed 100, Master X-Seed 120 (BASF)
Master X-Seed additives are hardening accelerators that boost the hydration process of early age cement. Master X-Seed is added to concrete in order to accelerate the strength development of the concrete mix across all temperature ranges. Master X-Seed additives consist of synthetically produced crystalline particles suspended in aqueous solution. A variety of Master X-Seed versions have been created to address local customer needs. For this EPD an average product composition based on Master X-Seed 100 and Master X-Seed 120 was used to determine the environmental impacts and life cycle assessment. European Parliament and Council Directive /EU No. 305/2011/ dated March 9, 2011 applies for placing hardening accelerators on the market. The products require a Declaration of Performance and CE marking taking into consideration /EN 934-2:2009+A1:2012 Admixtures for concrete, mortar and grout — Part 2: Concrete admixtures — Definitions, requirements, conformity, marking and labelling./ The respective national guidelines apply for use of the products in the EU/EFTA. Master X-Seed is introduced in small amounts (0.5-6% by mass of the cement binder content) to concrete in order to accelerate the hardening process. Master XSeed is optimized for all kind of concretes, especially for structural precast elements and ready-mix concrete.
germany