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Alkali-activated Binders and Concretes: The Path to Standardization

机译：碱活化粘合剂和混凝土：标准化之路

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A key obstacle in the pathway to the widespread utilization of any novel binder technology is the issue of compliance with existing regulatory standards, which are almost always written considering the specific physicochemical properties of portland-cement-based materials. Prescriptive standards that specify allowable binder compositions are in force in many jurisdictions and are a significant obstacle to the deployment of alkali-activated binders in large-scale concrete applications. Alkali-activated concretes are ideally suited to regulation through a performance-based approach, as embodied in ASTM C1157, and this approach to standardization clearly provides more avenues for future developments in non-traditional binder systems. This paper presents an analysis of the standards environment currently facing the worldwide alkali-activation community and provides a summary of the progress that has been made in recent years (including through the work of a RILEM Technical Committee, TC 224-AAM, working in the area). The international standards environment is showing increasing acceptance of alkali-activation technology in principle, and also in some instances in practice, showing that the need for sustainable binders is driving regulatory developments in this area and thus enabling the uptake and utilization of these materials. Standards incorporating key aspects that incorporate the scope for production and accurate durability testing of alkali-activated binders are now available in some jurisdictions, and the advancement of scientific knowledge to underpin these developments has proven essential in this process.
机译：广泛使用任何新的粘合剂技术的途径中的主要障碍是遵守现有法规标准的问题，考虑到基于硅酸盐水泥的材料的特定理化特性，几乎总是在撰写这些法规。规定允许使用的粘合剂组成的规范性标准在许多地区都已生效，并且是在大型混凝土应用中部署碱活化粘合剂的重要障碍。碱活化混凝土非常适合通过ASTM C1157中体现的基于性能的方法进行调节，这种标准化方法显然为非传统粘合剂体系的未来发展提供了更多途径。本文提供了对全球碱活化界当前面临的标准环境的分析，并总结了近年来取得的进展（包括通过RILEM技术委员会TC 224-AAM的工作）。区域）。国际标准环境在原则上显示出对碱活化技术的越来越多的接受，在实践中还显示出某些情况，这表明对可持续粘合剂的需求正在推动该领域的法规发展，从而使这些材料的吸收和利用成为可能。如今，在某些管辖区已经可以使用包含关键方面的标准，这些方面包含了碱活化粘合剂的生产范围和精确的耐久性测试，并且事实证明，支持这些发展的科学知识的进步在此过程中至关重要。

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