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首页> 外文期刊>RSC Advances >Assessment of pozzolanic activity of thermally activated clay and its impact on strength development in cement mortar
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Assessment of pozzolanic activity of thermally activated clay and its impact on strength development in cement mortar

机译：评估热活化粘土的火山灰活性及其对水泥砂浆强度发育的影响

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摘要

Natural kaolinitic clay from Khyber Pakhtoonkhwa, Pakistan was thermally activated at different temperatures and its pozzolanic behavior was studied. Thermal activation was carried out in an electrical muffle furnace at 200, 400, 600 and 800 degrees C for two hours. The index of order/disorder and structural changes with thermal treatment were studied using X-ray diffraction (XRD) and Fourier transformed infra-red spectrometry (FTIR). The pozzolanic behavior of all the samples was evaluated using an electrical conductivity test, lime consumption (LC) test and strength activity index (SAI). This study confirmed that natural kaolinitic clay other than pure kaolinite can act as an interesting pozzolana when thermally activated. The best temperature for thermal treatment of natural kaolinitic clay is 800 degrees C, while the permissible replacement in mortar is 25% as confirmed from the compressive strength measurement.
机译：来自Khyber Pakhtoonkhwa的天然高岭土粘土，巴基斯坦在不同的温度下热激活，研究了其Pozzolanic行为。 在200,400,600和800℃下在电动炉炉中进行热激活2小时。 使用X射线衍射（XRD）和傅里叶变换的红外光谱法（FTIR）研究了订单/疾病和具有热处理的结构变化的指标。 使用电导率测试，石灰消耗（LC）测试和强度活动指数（SAI）评估所有样品的POZOLOLANIC行为。 本研究证实，除纯高岭石之外的天然高岭土粘土可以作为热敏激活时作为一个有趣的Pozzolana。 天然高岭土粘土的热处理的最佳温度为800℃，而砂浆的允许替代则是从压缩强度测量的确认的25％。

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  • 来源
    《RSC Advances》 |2015年第8期|共6页
  • 作者

    Noor-ul-Amin; Alam Sultan; Gul Saeed;

  • 作者单位

    Abdul Wali Khan Univ Dept Chem Mardan Pakistan;

    Univ Malakand Dept Chem Chakdara Pakistan;

    UET Peshawar Dept Chem Engn Peshawar Pakistan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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