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首页> 外文会议>International Conference on Mechanical Automation and Materials Engineering >Self-healing effect caused by accelerated carbonation of thermally damaged cement mortar: changes in microstructural and macroscopic properties
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Self-healing effect caused by accelerated carbonation of thermally damaged cement mortar: changes in microstructural and macroscopic properties

机译：热损伤水泥砂浆加速​​碳酸化引起的自愈影响：微观结构和宏观性质的变化

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The objective of this work was to examine the influence of accelerated carbonation on the microstructural and macroscopic properties of thermally damage cement mortar. A normalised CEM II mortar was treated at 500°C then submitted to carbonation at 20°C, 65% relative humidity and 20% of CO_2 concentration. The pores size distributions were determined from nitrogen adsorption. We also followed changes in electrical resistivity and ultrasonic velocity. The results showed that losses of macroscopic properties caused by cracks appeared at high temperature were restored due to carbonation. This highlighted the self-healing effect by accelerated carbonation which allowed the thermally damaged mortar to recover its initial properties.
机译：这项工作的目的是研究加速碳酸化对热损伤水泥砂浆的微观结构和宏观性质的影响。将标准化的CEM II砂浆在500℃下处理，然后在20℃，65％相对湿度和20％的CO_2浓度下提交碳酸化。从氮吸附中确定孔径分布。我们还遵循电阻率和超声波速度的变化。结果表明，由于碳酸化，由裂缝引起的裂缝引起的宏观性质的损失。这突出了加速碳酸化的自我愈合效果，使热损坏的砂浆允许回收其初始性质。

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