...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Construction and Building Materials >Effect of micro polypropylene fibres and nano TiO_2 on the fresh- and hardened-state properties of geopolymer concrete
【24h】

Effect of micro polypropylene fibres and nano TiO_2 on the fresh- and hardened-state properties of geopolymer concrete

机译：微聚丙烯纤维和纳米TiO_2对地质聚合物混凝土的新鲜淬火状态性能的影响

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 study intends to assess the influence of micro polypropylene fibres (MPPF) and nano-TiO2 on the fresh- and hardened-state properties of fly ash (FA) based geopolymer concrete (GPC). 15 concrete mixes were produced and the slump, compressive, splitting tensile and flexural strengths, sorptivity, sulphate and chloride attack were measured. Five TiO2 incorporation ratios were used: 0%, 1%, 2%, 3%, 4% and 5% in terms of weight. Additionally, three MPPF contents were added in terms of volume: 0%, 1% and 2%. One sample was selected as a control specimen with no TiO2 and MPPF. Furthermore, new models were developed to predict the mechanical properties of GPC produced by different TiO2 and MPPF contents. The results showed that the mechanical properties and resistance of FA-based GPC against sulphate and chloride attacks were considerably improved with the use of nano-TiO2 and these properties were further enhanced when MPPF were also added. Therefore, using 5% nano-TiO2 with 2% MPPF improved the resistance of GPC against sulphate and chloride attacks respectively by 53% and 36%. In addition, the proposed models, with a high agreement with the experimental results, are useful tools to predict the mechanical properties of FA-based GPC produced with different nano-TiO2 and MPPF contents.
机译：本研究旨在评估微聚丙烯纤维（MPPF）和纳米TiO2对粉煤灰（FA）的地质聚合物混凝土（GPC）的新鲜和硬化状态性能的影响。产生了15种混凝土混合物，测量了坍落度，压缩，分裂拉伸和抗弯强度，吸附症，硫酸盐和氯化物侵蚀。使用5 TiO 2掺入比率：0％，1％，2％，3％，4％和5％。此外，在体积方面加入三种MPPF含量：0％，1％和2％。选择一种样品作为对照样品，没有TiO 2和MPPF。此外，开发了新模型以预测由不同TiO2和MPPF内容物产生的GPC的机械性能。结果表明，使用纳米TiO2的使用显着提高了基于FA的GPC和氯化物侵蚀的机械性能和抗性，并且当加入MPPF时，进一步提高了这些性质。因此，使用具有2％MPPF的5％纳米TiO2改善了GPC对硫酸盐和氯化物侵蚀的抗性分别将53％和36％。此外，拟议的模型具有高于实验结果的一致性，是预测用不同纳米TiO2和MPPF含量产生的基于GPC的机械性能的有用工具。

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