• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Advanced Material, Engineering Technology (conference) >Fly ash-metakaolin blend geopolymers under thermal exposures: Physical and mechanical performances
【24h】

Fly ash-metakaolin blend geopolymers under thermal exposures: Physical and mechanical performances

机译：粉煤灰 - Metakaolin混合物在热曝光下的聚合物：物理和机械性能

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper, an experimental study on the thermo-mechanical properties of fly ash-metakaolin blend geopolymers is presented. Visual observations, density and mass loss and compression test were conducted on geopolymers heated in a furnace at 200°C, 400°C, 600°C, 800°C and 1000°C with a heating rate of 10°C/min and soaking time of 1 hours. Fly ash-metakaolin blend geopolymers possessed excellent strength of 54.7MPa at ambient temperature and degraded 23.4% to 41.9MPa when exposed 200°C. The tested result show that the geopolymer can perform good residual strength (up to 23.2MPa) after 600°C. The strength of geopolymers decreased to 5.8MPa with increasing temperature up to 800°C. Even so, the geopolymers could withstand high temperature and remained intact. The higher mass loss due to the liberation of water from the surface, led to significant strength degradation in fly ash- metakaolin blend geopolymers. However, geopolymer gels exhibited structural stability at 1000°C, since at this temperature it promotes the reaction of the residue fly ash and metakaolin in the geopolymer samples, leading to a strength increase to 9.1MPa Employing blend fly ash and metakaolin as a precursor in the geopolymers helped to minimize the disruption effect caused by high temperature exposures.
机译：本文介绍了粉煤灰 - 偏毒素共混物地质聚合物热力学性能的实验研究。在200℃，400℃，600℃，800℃和1000℃下加热在炉中加热的地质聚合物的视觉观察，密度和质量损失和压缩试验，加热速率为10℃/ min，浸泡时间为1小时。粉煤灰 - 甲状腺素共混物聚合物在环境温度下具有优异的54.7MPa的优异强度，暴露200°C时降解了23.4％至41.9MPa。测试结果表明，在600℃后，地质聚合物可以进行良好的残余强度（最多23.2MPa）。缘聚合物的强度降低至5.8MPa，温度升高至800℃。即便如此，地质聚合物也可以承受高温并保持完整。由于从表面释放水而导致较高的质量损失，导致飞灰 - 甲状腺素共混物地质聚合物的显着降解。然而，地质聚合物凝胶在1000℃下表现出结构稳定性，因为在该温度下，它促进了残余物粉煤灰和甲状腺素在地质聚合物样品中的反应，导致强度增加到9.1MPa，使用混合物粉煤灰和偏塔林作为前体地质聚合物有助于最小化由高温曝光引起的破坏效应。

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