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Review study towards effect of Silica Fume on the fresh and hardened properties of concrete

机译：硅粉对混凝土新鲜和硬化性能影响的研究综述

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摘要

This paper presents a review on the use of Silica Fume (SF) as a mineral admixture in the concrete. Distinctive outcome from several researches have been demonstrated here, particularly emphasizing on the fresh and hardened properties of concrete when blended with Silica Fume (Micro-silica or Nano-silica). The results showed a substantial enhancement in the mechanical properties of concrete when replaced with SF. The review also presented a brief idea of percentage replacement of SF in case of normal and high-strength concrete. A decreasing trend in workability (slump value) has been identified when there is a increase in percentage replacement of SF. It can be concluded that the optimize percentage of replacement with SF lies in the range of 8-10% particularly for compressive strength. However the variation of blending goes up to 12-15% in case of split tensile and flexure strength of concrete. The study also demonstrates the effect of silica fume on durability parameters like water absorption, permeability, sulphate attack and chloride attack.
机译：本文对使用硅粉（SF）作为混凝土中的矿物掺合料进行了综述。在这里已经证明了多项研究的显着成果，特别是在与硅粉（微硅粉或纳米硅粉）混合时，强调了混凝土的新鲜和硬化性能。结果表明，当用SF代替时，混凝土的机械性能有了实质性的提高。审查还简要介绍了普通和高强度混凝土中SF的百分比替代。当SF的替代百分比增加时，已发现可加工性（坍落度）下降的趋势。可以得出结论，特别是对于抗压强度，用SF替代的最佳百分比在8-10％的范围内。但是，如果混凝土的抗拉强度和挠曲强度分开，则掺合量的变化可达12-15％。该研究还证明了硅粉对耐久性参数如吸水率，渗透性，硫酸盐侵蚀和氯化物侵蚀的影响。

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  • 来源
    《Advances in Concrete Construction》 |2018年第2期|145-157|共13页
  • 作者

    Ashhad Imam; Vikash Kumar; Vikas Srivastava;

  • 作者单位

    Department of Civil Engineering, Shepherd Institute of Engineering and Technology, Sam Higginbottom University of Agriculture, Technology & Sciences, Allahabad 211007, UP, India;

    Department of Civil Engineering, Shepherd Institute of Engineering and Technology, Sam Higginbottom University of Agriculture, Technology & Sciences, Allahabad 211007, UP, India;

    Department of Civil Engineering, Shepherd Institute of Engineering and Technology, Sam Higginbottom University of Agriculture, Technology & Sciences, Allahabad 211007, UP, India;

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  • 正文语种 eng
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  • 关键词

    Silica Fume; workability; compressive strength; split tensile strength; flexure strength;

    机译：硅粉;可操作性;抗压强度;劈裂抗拉强度弯曲强度;

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