...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Thermal analysis of geopolymer pastes synthesised from five fly ashes of variable composition
【24h】

Thermal analysis of geopolymer pastes synthesised from five fly ashes of variable composition

机译：由五种不同组成的粉煤灰合成的地聚合物糊的热分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper presents a study on the thermal properties of a range of geopolymers in order to assess their suitability for high temperature applications such as thermal barriers, refractories and fire resistant structural members. Geopolymers were synthesised from five different fly ashes using sodium silicate and sodium aluminate solutions to achieve a set range of Si:Al compositional ratios. The thermo-physical, mechanical and microstructural properties of the geopolymers are presented and the effect of the source fly ash characteristics on the hardened product is discussed, as well as implications for high temperature applications. The amount and composition of the amorphous component (glass) of each of the fly ashes was determined by combining XRD and XRF results. It was found that the Si:Al ratio in the glass of the fly ashes strongly influenced the thermal performance of the geopolymers. Geopolymers synthesised from fly ashes with a high Si:Al (≥ 5) in the glass exhibited compressive strength gains and greater dimensional stability upon exposure to 1000 °C, whereas geopolymers synthesised from fly ashes with low Si:Al (< 2) in the glass exhibited strength losses and reduced dimensional stability upon high temperature exposure.
机译：本文介绍了一系列地质聚合物的热性能研究，以评估其在高温应用中的适用性，如热障，耐火材料和耐火结构构件。使用硅酸钠和铝酸钠溶液从五种不同的飞灰中合成了地聚合物，以达到设定的Si：Al组成比范围。介绍了地质聚合物的热物理，机械和微观结构特性，并讨论了源粉煤灰特性对硬化产品的影响以及对高温应用的影响。通过结合XRD和XRF结果确定每种飞灰的无定形成分（玻璃）的量和组成。发现粉煤灰玻璃中的Si：Al比强烈影响地聚合物的热性能。在玻璃中暴露于高Si：Al（≥5）的粉煤灰合成的地聚合物在暴露于1000°C时显示出抗压强度的提高和尺寸稳定性，而在飞行中，低Si：Al（<2）的粉煤灰合成的地聚合物。在高温下，玻璃表现出强度损失和尺寸稳定性降低。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号