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首页> 外文期刊>Magazine of Concrete Research >Self-healing ability of cementitious composites: effect of addition of pre-soaked expanded perlite
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Self-healing ability of cementitious composites: effect of addition of pre-soaked expanded perlite

机译：水泥基复合材料的自我修复能力：添加预浸泡膨胀珍珠岩的效果

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摘要

This study assessed the use of pre-soaked expanded perlite aggregate (PS-EPA) on the self-healing of cementitious composites by replacing a proportion of normal aggregate with PS-EPA at different replacement rates. Specimens with and without PS-EPA were stored in water for 28 d and then mechanical loading was applied to produce specimen deterioration. At the age of 28 d, pre-loaded and sound specimens were exposed to continuous air (CA) exposure for 30 d. The degree of deterioration as a result of mechanical pre-loading and the degree of self-healing were determined via characterisation of crack numbers and widths, transport (chloride ion permeability) and mechanical properties (splitting tensile strength), and specimens with and without PS-EPA were compared. The test results revealed that increased PS-EPA content significantly improved the compressive strength and chloride ion permeability of specimens, and that it further enhanced the hydration and healing capability of specimens under CA exposure after pre-loading.
机译：这项研究通过以不同的置换率用PS-EPA代替一定比例的正常骨料，评估了预浸泡膨胀珍珠岩骨料（PS-EPA）在水泥复合材料自我修复中的使用。有和没有PS-EPA的样品在水中保存28天，然后施加机械载荷使样品变质。在28 d的年龄下，将预加载的声音样本暴露在连续的空气（CA）中30 d。机械预紧力导致的变质程度和自愈程度是通过表征裂纹数和宽度，传输（氯离子渗透性）和机械性能（断裂拉伸强度）以及有无PS的样品来确定的。 -EPA进行了比较。测试结果表明，增加PS-EPA含量可以显着提高样品的抗压强度和氯离子渗透性，并且可以进一步提高样品在预加载后暴露于CA下的水化和愈合能力。

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  • 来源
    《Magazine of Concrete Research》 |2014年第8期|409-419|共11页
  • 作者

    Mustafa Sahmaran; Gurkan Yildirim; Erdogan Ozbay; Karwan Ahmed; Mohamed Lachemi;

  • 作者单位

    Civil Engineering Department, Gazi University, Ankara, Turkey;

    Civil Engineering Department, Gazi University, Ankara, Turkey;

    Civil Engineering Department, Mustafa Kemal University, Antakya, Turkey;

    Civil Engineering Department, Gaziantep University, Gaziantep, Turkey;

    Civil Engineering Department, Ryerson University, Toronto, ON, Canada;

  • 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
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