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The Evaluation of Soil Cementation Generated from the Function of Microorganism

Author Affiliations

  • 1 Beijing Municipal Institute of Labor Protection Beijing, P.R.CHINA
  • 2Academy of Science and Technology Beijing, P.R.CHINA

Res.J.chem.sci., Volume 1, Issue (1), Pages 13-17, April,18 (2011)

Abstract

Over past decade, a lot of huge earthquakes attacked urban and industrial areas all over the world. Focusing on an Asian area, 1995 Kobe Earthquake in Japan, 1999 Kocaeli Earthquake in Turkey and 1999 Ji-Ji Earthquake in Taiwan brought severe damage not only to building structures but also industrial facilities and lifeline systems. From the aspect of mechanical engineering, the author investigated a new methodology of ground strengthen by the microbial function was put forward in detail, in which soil cementation can be generated by incorporating calcium, organic matter and microorganism into soil. A case study was performed in order to evaluate the degree of soil cementation generated by the microbial function, using Trigger and Accelerometer method (TA method) for the calibration of shear wave velocities transmitted in a specimen. Results showed an obvious change in shear wave velocities was observed during the experiments implying that the TA method is able to evaluate the level of cementation developed in soil in a non-destructive manner.

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