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Preparation and evaluation of thermal enhanced silica fume by incorporating organic PCM, for application to concrete

机译：掺入有机PCM的热增强硅粉的制备和评价，用于混凝土

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摘要

Silica fume has been used as a replacement for cement, due to its high early compressive strength, high tensile and flexural strength, high bond strength, and enhanced durability of concrete. This study examined enhanced thermal performances of silica fume by incorporating organic PCMs, for applying to concrete. Three kinds of organic PCMs were incorporated into the silica fume. The silica fume/PCM composites were prepared by the vacuum impregnation method. Because silica fume has a high porous structure compared to cement, it is useful to incorporate the PCM, to enhance its thermal storage performance. The characteristics of the composites were determined by using SEM, DSC, FTIR and TGA. SEM morphology showed the micro-structure of silica fume/PCM. Also, thermal properties were examined by DSC and TGA analyses; and the chemical bonding of the composite was determined by FTIR analysis.
机译：硅粉由于其高的早期抗压强度，高的抗张强度和抗弯强度，高的粘结强度以及增强的混凝土耐久性而被用作水泥的替代品。这项研究研究了通过掺入有机PCM来提高硅粉的热性能，以用于混凝土。将三种有机PCM掺入了硅粉中。硅粉/ PCM复合材料是通过真空浸渍法制备的。由于硅灰与水泥相比具有较高的多孔结构，因此掺入PCM有助于增强其储热性能。通过SEM，DSC，FTIR和TGA测定了复合材料的特性。扫描电镜（SEM）的形态表明了硅粉/ PCM的微观结构。另外，通过DSC和TGA分析检查了热性能。并通过FTIR分析确定了复合材料的化学键。

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  • 来源
    《Energy and Buildings》 |2013年第7期|190-195|共6页
  • 作者

    Su-Gwang Jeong; Jisoo Jeon; Junghoon Cha; Junhyun Kim; Sumin Kim;

  • 作者单位

    Building Environment (&) Materials Lab. School of Architecture, Soongsil University, Seoul, Republic of Korea;

    Building Environment (&) Materials Lab. School of Architecture, Soongsil University, Seoul, Republic of Korea;

    Building Environment (&) Materials Lab. School of Architecture, Soongsil University, Seoul, Republic of Korea;

    Building Environment (&) Materials Lab. School of Architecture, Soongsil University, Seoul, Republic of Korea;

    Building Environment (&) Materials Lab. School of Architecture, Soongsil University, Seoul, Republic of Korea;

  • 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

    PCM; Silica fume; Thermal properties; Cement; Heat storage;

    机译：PCM;硅粉;热性能;水泥;储热;

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