Front. Mater.
Sec. Biomaterials and Bio-Inspired Materials
doi: 10.3389/fmats.2022.1002987

Secondary consolidation characteristics of organic soil modified by bioenzyme based on Gibson model

 Yixin Zhang1* and Changping Wen1
  • 1Central South University Forestry and Technology, China
Provisionally accepted:
The final, formatted version of the article will be published soon.

In order to study the secondary consolidation characteristics of organic soil improved by bioenzyme, the secondary consolidation test was carried out. Firstly, the Gibson rheological model parameters were fitted according to the experimental results. Then, the relationship between rheological model parameters, Ca/Cc value, secondary consolidation coefficient Ca and load were analyzed different ratios of bioenzyme. Finally, the rheological model was used to predict, and the predicted value was in good agreement with the experimental value. The results showed that: (1) The rheological model parameters were negatively correlated with the ratios of bioenzyme and positively correlated with the load value. Some parameters reached the maximum value when the ratio of bioenzyme was 0.01%. (2) The secondary consolidation coefficient was related to the load and showed a certain law. With the increasing of load, the secondary consolidation coefficient Ca finally approached to a stable value. (3) The value of Ca/Cc of improved organic soil varied from 0.042 to 0.1 under various loads.

Keywords: Subgrade engineering, Organic soil improved by bioenzyme, Gibson three element rheological model, Secondary consolidation test, Different ratios of bioenzyme

Received: 25 Jul 2022; Accepted: 02 Sep 2022.

Copyright: © 2022 Zhang and Wen. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Dr. Yixin Zhang, Central South University Forestry and Technology, Changsha, China