This paper presents novel findings regarding the use of alkali-activated slag for the development of road applications and, more particularly, how the interactions that occur between the binder and the organic matter originally present in the soil can strongly affect its reactivity in the process of stabilization and solidification. The study uses mechanical performances and macroscopic characterization, such as isothermal calorimetry and thermogravimetric analysis of the pure binders as well as of the soil-binder mixes in order to characterize the hydration mechanisms. By analyzing the chemical composition of organic matter extracted with three different alkaline activators, it is shown that both humic and fulvic acids are strong complexing agents, not only of calcium and aluminum ions, as noted in the existing scientific literature, but also of highly soluble silicon. In this study, only sodium hydroxide activated slag was found to be a suitable alkali-activated binder for subbase layer development.

本文介绍了有关将碱活化矿渣用于道路应用的开发的新发现，更具体地讲，结合剂和最初存在于土壤中的有机物之间发生的相互作用如何强烈影响其在土壤处理过程中的反应性。稳定和凝固。该研究利用机械性能和宏观表征，例如对纯粘合剂以及土壤-粘合剂混合物的等温量热和热重分析，以表征水合机理。通过分析用三种不同的碱性活化剂提取的有机物的化学组成，可以发现，腐殖酸和富里酸既是钙和铝离子的强络合剂，如现有科学文献中所述，而且还有高可溶性硅。在这项研究中，仅氢氧化钠活化的矿渣被发现是用于碱层开发的合适的碱活化的粘合剂。