JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI ›› 2019, Vol. 36 ›› Issue (4): 109-112.DOI: 10.11988/ckyyb.20171115

• HYDRAULIC STRUCTURE AND MATERIAL • Previous Articles     Next Articles

Effect of Multidimensional Load on Permeability of Concrete with Different Moisture Content

ZHANG Bin, YANG Shuo, ZHOU Jun-xia   

  1. College of Civil Engineering, Liaoning Technical University, Fuxin 123000, China
  • Received:2017-09-27 Revised:2017-10-27 Online:2019-04-01 Published:2019-04-18

Abstract: The effect of multidimensional load on the permeability of concrete of varied water content is examined in this research by using ZYS-1 coal-rock multifunctional triaxial infiltration apparatus under different test conditions. The change trend of permeability coefficient during the climbing of axial compression, confining pressure, and pore pressure are analyzed, and the curves of permeability coefficient under such conditions are acquired respectively. Results illustrate that the permeability coefficient of concrete is in a negative exponential relationship with axial pressure and confining pressure, but is more sensitive to confining pressure, which is reflected in the swift change of permeability coefficient in the presence of low confining pressure. Under the action of confining pressure or axial compression, the permeability coefficient of concrete tends to be stable, and decreases with the increase of water content and gets less sensitivity to water content. The research findings are of great significance to enhancing the durability of concrete and the long-term performance of bridges.

Key words: concrete, permeability, triaxial osmometer, axial compression, confining pressure, pore pressure, moisture content, characteristic curve of permeability coefficient

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