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Volume 35 Issue zk1
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WANG Jun, WANG Qian, WANG Ping, ZHONG Xiu-mei, CHAI Shao-feng. Effect of adding amount of fly ash on dynamic constitutive relationship of modified loess[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk1): 156-160.
Citation: WANG Jun, WANG Qian, WANG Ping, ZHONG Xiu-mei, CHAI Shao-feng. Effect of adding amount of fly ash on dynamic constitutive relationship of modified loess[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk1): 156-160.
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Effect of adding amount of fly ash on dynamic constitutive relationship of modified loess

  • 1. Lanzhou Institute of Seismology, CEA, Lanzhou 730000, China; 2. Key Laboratory of Loess Earthquake Engineering, CEA, Lanzhou 730000, China; 3. Geotechnical Disaster Prevention Engineering Technology Research Center of Gansu Province, Lanzhou 730000, China

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  • Received Date: March 01, 2013
  • Published Date: July 18, 2013
    Graphical Abstract
    • Abstract
  • Based on the dynamic triaxial tests on disturbed unsaturated samples, a study on the dynamic characteristics of modified fly ash loess is carried out. The dynamic stress-strain relationship of fly ash loess under loading function is discussed. The influence of adding amount of fly ash on the dynamic constitutive relationship, dynamic modulus of elasticity and damping ratio of the modified loess is analyzed. The results show that the dynamic constitutive relationship of the modified loess with different adding amounts of fly ash obeys the hyperbolic equation. The test constants aand bdecrease with the increase of the adding amount of fly ash. The dynamic modulus of elasticity increases with the increase of fly ash amount, but the damping ratio noticeably reduces. The optimal content of fly ash of the fly ash-modified loess is 15%~20%.
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