Abstract The paper discusses the potential of fillers in CO2 mitigation in the cement industry. A historical overview of the use of fillers is presented as well as the limits of filler use given in cement standards. Globally, limestone filler currently represents only 7% of average worldwide cement composition. The limits of the current route to adding filler in cement by means of intergrinding are discussed. An innovative technology, that compensates binder dilution by a reduction of the water required for good rheological behavior, is presented; this allows clinker replacement rates of up to 70%. The theory that enables the design of such multimodal particle size distributions with high particle packing and low-water demand is presented, and examples of its application in concrete production are given. The efficiency in terms of CO2 mitigation is demonstrated by comparing concrete formulations designed with this innovative approach with a global benchmark of current technology. New filler minerals, as well as the effects of high-filler content on production processes and on durability are also discussed.

中文翻译：

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胶凝材料中的填料——经验、最新进展和未来潜力

摘要 本文讨论了填料在水泥行业二氧化碳减排方面的潜力。介绍了填料使用的历史概述以及水泥标准中给出的填料使用限制。在全球范围内，石灰石填料目前仅占全球平均水泥成分的 7%。讨论了通过混磨在水泥中添加填料的当前途径的局限性。介绍了一种创新技术，通过减少良好流变行为所需的水来补偿粘合剂稀释；这使得熟料更换率高达 70%。介绍了能够设计这种具有高颗粒堆积和低需水量的多峰粒度分布的理论，并给出了其在混凝土生产中的应用实例。通过将采用这种创新方法设计的混凝土配方与当前技术的全球基准进行比较，证明了二氧化碳减排的效率。还讨论了新的填料矿物，以及高填料含量对生产过程和耐久性的影响。