• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Construction and Building Materials >Influence of SiO_2, TiO_2 and Fe_2O_3 nanoparticles on the properties of fly ash blended cement mortars
【24h】

Influence of SiO_2, TiO_2 and Fe_2O_3 nanoparticles on the properties of fly ash blended cement mortars

机译：SiO_2，TiO_2和Fe_2O_3纳米粒子对粉煤灰混合水泥砂浆性能的影响

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 explores the effects of different types of nanoparticles, namely nano-SiO2 (NS), nano-TiO2 (NT), and nano-Fe2O3 (NF) on the fresh properties, mechanical properties, and microstructure of cement mortar containing fly ash as a supplementary cementitious material. These nanoparticles existed in powder form and were incorporated into the mortar at the dosages of 1%, 3%, and 5% wt.% of cement. Also, fly ash has been added into in mortars with a constant dosage of 30% wt.% of cement. Compressive and flexural strength tests were performed to evaluate the mechanical properties of the mortar specimens with different nanoparticles at three curing ages, 7, 14, and 28 days. Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) tests were conducted to study the microstructure and the hydration products of the mortars. To elucidate the effects of nanoparticles on the binder phase, additional experiments were performed on accompanying cement pastes: nanoindentation and open porosity measurements. The study shows that, if added in appropriate amounts, all nanoparticles investigated can result in significantly improved mechanical properties compared to the reference materials. However, exceeding of the optimal concentration results in clustering of the nanoparticles and reduces the mechanical properties of the composites, which is accompanied with increasing the porosity. This study provides guidelines for further improvement of concretes with blended cements through use of nanoparticles. (C) 2020 The Author(s). Published by Elsevier Ltd.
机译：该研究探讨了不同类型的纳米颗粒，即纳米SiO 2（NS），Nano-TiO 2（NT）和纳米-FE2O3（NF）对含有粉煤灰的新鲜性质，机械性能和微观结构的影响。补充水泥材料。这些纳米颗粒以粉末形式存在，并在1％，3％和5％重量％的剂量下掺入研钵中。％水泥的％。此外，粉煤灰已被加入砂浆中，持续剂量为30％wt％。水泥的％。进行压缩和弯曲强度试验以评估砂浆样品的机械性能，在三个固化年，7,14和28天的三种固化中具有不同的纳米颗粒。进行扫描电子显微镜（SEM）和能量分散X射线（EDX）试验以研究迫击炮的微观结构和水化产物。为了阐明纳米颗粒对粘合剂相的影响，对伴随水泥浆料进行另外的实验：纳米狭窄和开放的孔隙率测量。该研究表明，如果以适当量添加，则研究的所有纳米颗粒可导致与参考材料相比显着改善的机械性能。然而，超过最佳浓度导致纳米颗粒的聚类并减少复合材料的机械性能，其伴随着增加孔隙率。本研究提供了通过使用纳米颗粒进一步改善混合水泥的混凝土的准则。 （c）2020提交人。 elsevier有限公司出版

著录项

  • 来源
    《Construction and Building Materials》 |2020年第20期|119627.1-119627.11|共11页
  • 作者

    Ng Ding Siang; Paul Suvash Chandra; Anggraini Vivi; Kong Sih Ying; Qureshi Tanvir Shams; Rodriguez Claudia Romero; Liu Qing-feng; Savija Branko;

  • 作者单位

    Monash Univ Malaysia Sch Engn Discipline Civil Engn Jalan Lagoon Selatan Bandar Sunway 47500 Selangor Malaysia;

    Monash Univ Malaysia Sch Engn Discipline Civil Engn Jalan Lagoon Selatan Bandar Sunway 47500 Selangor Malaysia|Int Univ Business Agr & Technol Dept Civil Engn Dhaka 1230 Bangladesh;

    Monash Univ Malaysia Sch Engn Discipline Civil Engn Jalan Lagoon Selatan Bandar Sunway 47500 Selangor Malaysia;

    Monash Univ Malaysia Sch Engn Discipline Civil Engn Jalan Lagoon Selatan Bandar Sunway 47500 Selangor Malaysia;

    Univ Toronto Dept Civil & Mineral Engn Toronto ON M5S 1A1 Canada;

    Delft Univ Technol Fac Civil Engn & Geosci Microlab NL-2628 CN Delft Netherlands;

    Shanghai Jiao Tong Univ Sch Naval Architecture Ocean & Civil Engn Shanghai 200240 Peoples R China;

    Delft Univ Technol Fac Civil Engn & Geosci Microlab NL-2628 CN Delft Netherlands;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nanoparticles; SiO2; TiO2; Fe2O3; Mechanical strength; Microstructure; Nanoindentation;

    机译：纳米粒子;SiO2;TiO2;Fe2O3;机械强度;微观结构;纳米凸缘;

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