Abstract The thermal transformation (100–1100 °C) of two shales containing illite-chlorite (I/Ch), feldspars and quartz from La Cabanita quarry (Olavarria, Argentine) was studied by TG-DTA, XRD and FTIR. It included dehydration; dehydroxylation (350–800 °C) and the structural collapse of illite (950 °C); while the neoformations were hematite and iron spinel. For rotary kiln production, the glass formation due to feldspars melting at 1100 °C was the upper temperature limit. For the calcination temperature range of 900–1100 °C, grindability increased when calcination temperature increased, but the specific surface area decreased. The high Fe-content caused a reddish color of particle surface, but their cores were black. The pozzolanicity test was satisfied at 7 days and strength activity index was 0.84–0.97 and 0.94–1.04 at 28 and 90 days, respectively. The addition of calcined shale did not affect the mortar flow and the hydration products assembly. Calcined I/Ch shale was a slow reactive pozzolan with good strength at 90 days.

中文翻译：

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作为补充胶结材料的煅烧伊利石-绿泥石页岩：热处理、研磨、着色和火山灰活性

摘要 通过TG-DTA、XRD和FTIR研究了来自La Cabanita采石场（Olavarria，Argentine）的两种含有伊利石-绿泥石（I/Ch）、长石和石英的页岩的热转变（100-1100°C）。它包括脱水；脱羟基（350-800 °C）和伊利石的结构坍塌（950 °C）；而新地层则是赤铁矿和铁尖晶石。对于回转窑生产，由于长石在 1100 °C 熔化而形成的玻璃是温度上限。对于900-1100℃的煅烧温度范围，随着煅烧温度的升高，可磨性增加，但比表面积降低。高铁含量导致颗粒表面呈红色，但其核心是黑色的。7天时火山灰测试满意，28天和90天强度活动指数分别为0.84-0.97和0.94-1.04，分别。添加煅烧页岩不影响砂浆流动和水化产物的组装。煅烧 I/Ch 页岩是一种缓慢反应的火山灰，在 90 天时具有良好的强度。