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CHEN Jian-xun, LUO Yan-bin. Probability Statistic Rule of C25 Shotcrete-Strength[J]. Journal of Traffic and Transportation Engineering, 2006, 6(1): 72-75.
Citation: CHEN Jian-xun, LUO Yan-bin. Probability Statistic Rule of C25 Shotcrete-Strength[J]. Journal of Traffic and Transportation Engineering, 2006, 6(1): 72-75.
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Probability Statistic Rule of C25 Shotcrete-Strength

  • 1.

    School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China

  • 2.

    Key Laboratory for Bridge and Tunnel of Shaanxi Province, Chang'an University, Xi'an 710064, Shaanxi, China

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  • Author Bio:

    CHEN Jian-xun(1969-), male, associate professor, doctoral student, 86-29-82334822, chenjx1969@163.com

  • Received Date: 2005-06-20
  • Publish Date: 2006-03-25
    Abstract
  • In order to analyzing the distributation rule of shotcrete-strength, the expenimental data of shotcrete-strength were studied by Normal distribuation, logarithm Normal distributation and extremum Ⅰ distributation, the distributations were examined by χ2 mothed, statistical standard values were calculated by the rule. Computation result shows that the C25 shotcrete-strength distribution submits Normal distribution, C25 shotcrete-strength's standard deviation is 6.91~7.15 MPa, its variation coefficient is 0.24~0.26, C25 moulded concrete strength's standard deviation is 5.43 MPa, its variation coefficient is 0.16, the homogeneity of shotcrete-strength construction is worse, the divergence index of shotcrete-strength is larger, the standard value of shotcrete-strength is 16~18 MPa, it is near to the strength 17 MPa of moulded concrete.

     

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