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首页> 外文期刊>Construction and Building Materials >Experimental study on Portland cement pervious concrete mechanical and hydrological properties
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Experimental study on Portland cement pervious concrete mechanical and hydrological properties

机译：硅酸盐水泥透水混凝土力学和水文性能的试验研究。

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摘要

Pervious concrete layer is one of the effective concrete pavement mixes to address a number of important environmental issues, such as recharging groundwater and reducing storm water runoff. Portland Cement Pervious Concrete (PCPC) is produced by eliminating most or all of the fine aggregate in the mix, which allows interconnected void spaces to be formed in the hardened matrix. These interconnected void spaces allow the concrete to transmit water at relatively high rates. Twenty-four PCPC mixtures were prepared and tested to address the effect of different size fractions of coarse aggregate, water-to-cement ratio, cement content, and coarse aggregate volume on the relationships between compressive strength, tensile strength, porosity, and permeability. The mixtures used in this study consisted of either one or two aggregate sizes. Linear regression relationships were developed to establish relationships between density and porosity, compressive strength and permeability, tensile strength and permeability, and compressive strength and porosity. The results showed that properties such as permeability, porosity, are significantly affected by using either one or two coarse aggregate sizes in all concrete mixtures. Furthermore, density can be an effective factor for predicting compressive strength, and porosity. In this study, the maximum compressive strength was 6.95 MPa, which obtained by using one aggregate size of 9.5 mm with 250 kg/m~3 cement content. The obtained results showed that PCPC could be produced using one or two aggregate sizes at most.
机译：透水混凝土层是解决许多重要环境问题（例如补给地下水和减少雨水径流）的有效混凝土铺面之一。硅酸盐水泥渗透混凝土（PCPC）是通过消除混合物中的大部分或全部细骨料来生产的，这允许在硬化的基体中形成相互连接的空隙。这些相互连接的空隙空间允许混凝土以相对较高的速率输送水。制备并测试了二十四种PCPC混合物，以解决不同尺寸的粗骨料组分，水灰比，水泥含量和粗骨料体积对抗压强度，拉伸强度，孔隙率和渗透率之间关系的影响。本研究中使用的混合物由一种或两种骨料组成。建立了线性回归关系以建立密度与孔隙率，抗压强度与渗透率，抗拉强度与渗透率以及抗压强度与孔隙率之间的关系。结果表明，在所有混凝土混合物中使用一种或两种粗骨料尺寸会显着影响性能，例如渗透性，孔隙率。此外，密度可以是预测抗压强度和孔隙率的有效因素。在这项研究中，最大抗压强度为6.95 MPa，这是通过使用9.5毫米的骨料和250 kg / m〜3的水泥含量获得的。所得结果表明，最多可使用一种或两种骨料尺寸生产PCPC。

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  • 来源
    《Construction and Building Materials》 |2014年第1期|524-529|共6页
  • 作者

    Ahmed Ibrahim; Enad Mahmoud; Mohammed Yamin; Varun Chowdary Patibandla;

  • 作者单位

    Civil Engineering, Parks College of Engineering, Aviation and Technology, Saint Louis University, Saint Louis, MO 63/03, USA;

    Mechanical Engineering - Civil Engineering Program, The University of Texas -Pan American, Edinburg TX 78539, USA;

    Civil Engineering and Construction, Bradley University, Peoria, IL 61625, USA;

    Civil Engineering and Construction, Bradley University, Peoria, IL 61625, USA;

  • 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

    Pervious concrete; Compressive strength; Porosity; Permeability;

    机译：透水混凝土;抗压强度;孔隙率磁导率;

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