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Comparison of the hygric behaviour of three hemp concretes

机译:三种大麻混凝土的水合性能比较

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摘要

Hemp concrete is a bio-based building material the main qualities of which are its low environmental impact and its hygrothermal behaviour. Even for one kind of application (for example: wall), several compositions and manufacturing methods are encountered in the market. This study compares the hygroscopic behaviour of three hemp concretes used for building walls to identify whether composition and manufacturing have an impact on hygric properties. The investigations are based on the measurement of the sorption curve, of the water vapour permeability versus humidity and of the moisture buffer value. Moisture diffusivity is calculated from the sorption curve and from the water vapour permeability. The results underline the high transfer and storage capacities of these materials; they are classified as excellent (or nearly excellent) hygric regulators. A slight effect of porosity, connected with composition and manufacturing method, is observed.
机译:大麻混凝土是一种生物基建筑材料,其主要特性是对环境的影响小和具有湿热特性。即使对于一种应用(例如:墙面),市场上也会遇到几种成分和制造方法。这项研究比较了三种用于建筑墙体的大麻混凝土的吸湿性能,以确定成分和制造过程是否对保湿性能产生影响。研究基于吸附曲线,水蒸气渗透率与湿度的关系以及水分缓冲值的测量。由吸附曲线和水蒸气渗透率计算出水分扩散率。结果强调了这些材料的高转移和储存能力;它们被归类为优秀(或近乎优秀)的液压调节器。观察到与组成和制造方法有关的孔隙率的轻微影响。

著录项

  • 来源
    《Energy and Buildings》 |2013年第7期|294-303|共10页
  • 作者单位

    Universite Europeenne de Bretagne, Laboratoire de Genie Civil et Genie Mecanique, Equipe Materiaux Thermo Rheologie, France;

    Universite Europeenne de Bretagne, Laboratoire de Genie Civil et Genie Mecanique, Equipe Materiaux Thermo Rheologie, France;

    Universite Europeenne de Bretagne, Laboratoire de Genie Civil et Genie Mecanique, Equipe Materiaux Thermo Rheologie, France;

    Universite Europeenne de Bretagne, Laboratoire de Genie Civil et Genie Mecanique, Equipe Materiaux Thermo Rheologie, France;

  • 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

    Bio-based material; Sorption isotherm; Water vapour permeability; Moisture diffusivity; Moisture buffer value;

    机译:生物基材料;吸附等温线;水蒸气渗透率;水分扩散率;水分缓冲值;

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