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A high-strength lightweight concrete made using straw

机译:用稻草制成的高强度轻质混凝土

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摘要

This experimental work aims to develop an eco-lightweight concrete with excellent mechanical and thermophysical properties using straw. Thus, this paper considers the use of a formulation of an ultrahigh-performance concrete based on dune sand, with the introduction of up to 20 kg/m(3) of straw. The study investigates the mechanical and thermophysical properties of the obtained high-strength lightweight concrete and examines the effects of the straw length. The results show that, depending on the amount of straw used, a decrease of up to 33% of density and 60% of thermal conductivity is noted. Moreover, despite increasing the straw content, which reduces the mechanical strength of the concrete, interesting strength values are noted; for instance, values varying from 42 to 59 MPa in compressive strength and from 3.2 to 5.3 MPa in flexural strength for 2 cm of straw length are obtained.
机译:这项实验工作旨在使用秸秆开发具有优异机械和热物理性能的生态轻质混凝土。因此,本文考虑使用基于沙丘砂的超高性能混凝土配方,并引入高达20 kg / m(3)的稻草。该研究调查了获得的高强度轻质混凝土的机械和热物理性质,并研究了秸秆长度的影响。结果表明,根据秸秆的使用量,密度降低了33%,热导率降低了60%。此外,尽管增加了秸秆含量,这降低了混凝土的机械强度,但仍注意到了令人感兴趣的强度值。例如,对于2 cm的稻草长度,可以获得抗压强度从42到59 MPa不等的值,弯曲强度从3.2到5.3 MPa不等的值。

著录项

  • 来源
    《Magazine of Concrete Research》 |2020年第10期|460-470|共11页
  • 作者

  • 作者单位

    Univ Carthage Inst Super Technol Environm Urbanisme & Batiment Tunis Tunisia;

    Univ Tunis El Manar Ecole Natl Ingenieurs Tunis Lab Genie Civil Tunis Tunisia|Fondouk Jadid Dept Genie Civil Acad Mil Tunis Tunisia;

  • 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

    aggregates; compressive strength; lightweight concrete;

    机译:骨料抗压强度;轻质混凝土;

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