The levels of CO₂ emissions generated by the cement industry and the growth in demand for its products have led to a search for ways to reduce these emissions. The use of supplementary cementitious materials has become one of the solutions proposed for this problem. Illite, which is found all over the world, is a possible supplementary cementitious material. Before illite can be used, it must be milled and treated thermally in order to activate it, so that the alkalis (Na⁺ and K⁺) are free and available to react. Alkalis in cement participate in deleterious reactions (alkali-silica reaction) or have a beneficial effect (alkaline activation). The alkalis present in the rocks can play an active role in these phenomena, however. In addition, the material could be influenced by the alkaline environment produced by the cement. The current study was aimed at analyzing whether an alkali release occurs and if so, how it is affected when a milled and thermally treated illitic rock is in contact with water or an alkaline solution. The material was characterized by X-ray fluorescence, polarizing microscopy, and X-ray diffraction (XRD). The sample was treated thermally at 300, 600, and 900°C, and the thermal activation was evaluated through XRD, density, and Atterberg limits. The evolution of alkali release was studied by determining the sodium and potassium concentration of contact water obtained by mixing the samples with different pH solutions for various lengths of time. In addition, the calcium concentration was determined. The concentrations of sodium and potassium in the contact water were determined by flame photometry, and of calcium by EDTA (ethylenediaminetetraacetic acid) titration. The results showed that with increasing age, increasing solution pH, and higher treatment temperatures, alkali release occurred and increased, whereas Ca²⁺ concentration decreased.

水泥行业产生的 CO ₂排放水平及其产品需求的增长促使人们寻找减少这些排放的方法。使用辅助胶凝材料已成为针对该问题提出的解决方案之一。伊利石遍布世界各地，是一种可能的补充胶凝材料。在使用伊利石之前，必须对其进行研磨和热处理以使其活化，从而使碱（Na ⁺和 K ⁺) 是免费的并且可以做出反应。水泥中的碱参与有害反应（碱-二氧化硅反应）或具有有益作用（碱活化）。然而，岩石中存在的碱可以在这些现象中发挥积极作用。此外，该材料可能会受到水泥产生的碱性环境的影响。目前的研究旨在分析是否会发生碱释放，如果是的话，当研磨和热处理的伊利石岩石与水或碱性溶液接触时，它会受到怎样的影响。通过 X 射线荧光、偏光显微镜和 X 射线衍射 (XRD) 对材料进行了表征。样品在 300、600 和 900°C 下进行热处理，并通过 XRD、密度和 Atterberg 限制评估热活化。通过测定通过将样品与不同 pH 溶液混合不同时间长度而获得的接触水的钠和钾浓度来研究碱释放的演变。此外，测定钙浓度。接触水中钠和钾的浓度采用火焰光度法测定，钙的浓度采用 EDTA（乙二胺四乙酸）滴定法测定。结果表明，随着年龄的增加、溶液 pH 值的增加和处理温度的升高，碱释放发生并增加，而 Ca 接触水中钠和钾的浓度采用火焰光度法测定，钙的浓度采用 EDTA（乙二胺四乙酸）滴定法测定。结果表明，随着年龄的增加、溶液 pH 值的增加和处理温度的升高，碱释放发生并增加，而 Ca 接触水中钠和钾的浓度采用火焰光度法测定，钙的浓度采用 EDTA（乙二胺四乙酸）滴定法测定。结果表明，随着年龄的增加、溶液 pH 值的增加和处理温度的升高，碱释放发生并增加，而 Ca²⁺浓度下降。