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Hygroscopic and mechanical behaviour of earth bricks

机译:接地砖的吸湿和力学行为

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摘要

Considering the challenges imposed by the current movement towards green development, earth construction appears to offer promising possibilities for improving thermal comfort, energy consumption and indoor humidity regulation. However, the difficulties in predicting the behaviour of earth as a construction material is an obstacle to the development of this technique. The principal objective of this study is to establish the scientific bases needed to predict its hygroscopic and mechanical behaviour as a function of the relative humidity that is one of the main factors controlling the home confort. For this purpose, it is necessary to find correlations between the variability of the soils (density, pore size distribution, chemical and mineralogical composition) and the hygromechanical behaviour of the earth bricks (adsorption, hydric buffering and compressive strength). The results, in terms of hydric and mechanical behaviour specific to each brick, show that the behaviour of this material depends on several factors, namely, the SiO2/Al2O3 ratio, the porosity rate, the pore size distribution, the nature of the clay minerals, and their content.
机译:考虑到当前对绿色发展运动施加的挑战,地球施工似乎为提高热舒适,能耗和室内湿度调节提供了有希望的可能性。然而,预测地球行为作为建筑材料的困难是这种技术发展的障碍。本研究的主要目的是建立以预测其吸湿和机械行为所需的科学基础,作为一种相对湿度的函数,这是控制家庭诱惑的主要因素之一。为此目的,有必要在土壤(密度,孔径分布,化学和矿物学组合物)和地球砖的潮气机制(吸附,水性缓冲和抗压强度)之间找到相关性。结果,就每块砖特异的水性和机械行为而言,表明该材料的行为取决于若干因素,即SiO 2 / Al2O3比,孔隙率,孔径分布,粘土矿物质的性质及其内容。

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  • 来源
    《Materials and structures》 |2021年第3期|116.1-116.15|共15页
  • 作者单位

    GC2D - Laboratoire de Génie Civil Diagnostic Et Durabilité Université de Limoges Boulevard Jacques Derches 19300 Egletons France|LMDC - Laboratoire Matériaux et Durabilité des Constructions Université de Toulouse INSA/UPS Génie Civil 135 Avenue de Rangueil 31077 Toulouse Cedex 04 France;

    LMDC - Laboratoire Matériaux et Durabilité des Constructions Université de Toulouse INSA/UPS Génie Civil 135 Avenue de Rangueil 31077 Toulouse Cedex 04 France;

    GC2D - Laboratoire de Génie Civil Diagnostic Et Durabilité Université de Limoges Boulevard Jacques Derches 19300 Egletons France;

    CTMNC - Centre Technique de Matériaux Naturels de Construction Service Céramique R&D Ester Technopole 87069 Limoges Cedex France;

    GC2D - Laboratoire de Génie Civil Diagnostic Et Durabilité Université de Limoges Boulevard Jacques Derches 19300 Egletons 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

    Unfired clay brick; Anisotropy; Physical properties; Microstructure; Chemical composition; Mineralogical composition; Hygroscopic properties; Mechanical properties;

    机译:未用的粘土砖;各向异性;物理性质;微观结构;化学成分;矿物学组成;吸湿性;机械性能;

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