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首页> 外文期刊>Materials and structures >Possibility of using different types of Egyptian serpentine as fine and coarse aggregates for concrete production
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Possibility of using different types of Egyptian serpentine as fine and coarse aggregates for concrete production

机译：使用不同类型的埃及蛇纹石作为混凝土生产的细小粗聚集的可能性

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摘要

This work is the first attempt to study the possibility of incorporating three different types of Egyptian serpentine aggregates (antigorite, lizardite and chrysotile) with different serpentinization grades as fine and coarse aggregates for normal concrete production. The results of physical and mechanical tests for each type of aggregate were compared to the others. In addition, the effect of serpentinization grade on their mineralogical composition, physico-mechan-ical and morphological properties of was evaluated and compared. The results were analyzed by using sophisticated tools such as X-ray diffraction, thermo-gravimetry/differential thermogravimetry and scanning electron microscopy. The results revealed that the physical, mechanical and microstructural properties of serpentine-based concretes were negatively influenced by the progress of serpentinization and deformation processes. The antigorite aggregate showed the lowest serpentinization grade compared to the others (i.e. lizardite and chrysotile). Thus, the antigorite-based concrete revealed better physical and mechanical properties as well as a condensed interfa-cial transition zone than those of lizardite- and chrysotile-based. Therefore, the results of this study indicated that antigorite is the most appropriate serpentine aggregate to be used in normal concrete production, however, more tests on the durability of such concrete are needed.
机译：这项工作是第一次尝试研究三种不同类型的埃及蛇形聚集体（抗真菌，蜥蜴和菊花），其具有不同的蛇形化等级作为正常混凝土生产的细小骨料。将每种类型骨料的物理和机械测试的结果与其他聚集体进行比较。此外，蛇形化等级对其矿物学组成，物理机械 - 机械和形态特性的影响和比较。通过使用诸如X射线衍射，热重量/差动热重度测定法和扫描电子显微镜的复杂工具来分析结果。结果表明，基于蛇纹石的混凝土的物理，机械和微观结构性能受到蛇形化和变形过程的进展的负面影响。与其他相比，抗抗石聚集体显示了最低的蛇形化等级（即蜥蜴酸盐和菊花）。因此，基于抗原的混凝土揭示了比蜥蜴和菊花的基于蜥蜴和菊粉的浓缩的卵形过渡区更好的物理和机械性能。因此，本研究的结果表明，抗轨石是在正常混凝土生产中使用的最合适的蛇形骨料，然而，需要对这种混凝土的耐久性进行更多的测试。

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  • 来源
    《Materials and structures》 |2020年第4期|87.1-87.17|共17页
  • 作者

    M. A. Masoud; Alaa M. Rashad; K. Sakr; M. G. Shahien; A. M. Zayed;

  • 作者单位

    Applied Mineralogy and Water Research Lab Department of Geology Faculty of Science Beni-Suef University Beni Suef 62521 Egypt;

    Building Materials Research and Quality Control Institute Housing and Building National Research Center (HBRC) Cairo Egypt Civil Engineering Department College of Engineering Shaqra University Riyadh Saudi Arabia;

    Hot Laboratory Center Atomic Energy Authority Cairo 13759 Egypt;

    Applied Mineralogy and Water Research Lab Department of Geology Faculty of Science Beni-Suef University Beni Suef 62521 Egypt;

    Applied Mineralogy and Water Research Lab Department of Geology Faculty of Science Beni-Suef University Beni Suef 62521 Egypt;

  • 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

    Serpentine aggregate; Serpentinization grade; Concrete; Microstructure; Mechanical strength; Hydration product;

    机译：蛇纹石骨料;蛇形化等级;具体的;微观结构;机械强度;水合作用品;

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