The Mitigation of Soil Liquefaction

The paper discusses the current mitigation methods of soil liquefaction and looks into a newer technology involving nano-particles of laponite. I do have Some research on most fields and will be doing more in the coming days.

SUMMARY

Soil liquefaction is the phenomenon where the ground loses its ability to carry stress and shear loading, leading it to act in a “liquid” manner, thus the name. This natural disaster has been the cause of countless deaths and is the culprit for millions of pounds of damage. One such disaster was the “Aberfan disaster” which took the lives of 144 in Aberfan, Wales. It is plain to see that these catastrophic events must be prevented and in recent years the mitigation of soil liquefaction has flourished with new and old methods being used. Such techniques include the installation of wick drains which are large piles driven into the ground which provide drainage for the water in the soil. Drainage path can also be made with gravel or other manufactured materials, these techniques alongside others are used in conjunction to mitigate the effects of soil liquefaction.

The original aims and objectives of the thesis have not changed. To assess the current mitigation methods and what burgeoning advancements are being made in this field is still the sole purpose of this paper. Using newly gathered data from The University of Tongji in China, the mitigation of soil liquefaction using nanoparticles of laponite will be analysed. Although these results have not been made available just yet, this was expected and falls in line with the original timeline. (appendix 1)

As this is a literature review the research and readings have not all been finished quite yet. As stated in the original timeline the readings and analysis of the new results will be finished by the end of February. At this point in time a large portion of the readings were comprised of understanding liquefaction, as it is both a complex and narrow field the information available is at times difficult to find and even harder to interpret. Mitigation methods have been looked into, however much more attention to the specifics of each method will be the focus for the next two months.

PROPOSED TABLE OF CONTENTS

1 | Abstract
2 | Acknowledgements
3 | Table of Contents
4 | Introduction
4.1 Soil Liquefaction, a Global Issue
4.2 Importance of the Mitigation of Soil Liquefaction
4.3 Aims and Objectives
4.3.1 Aims
4.3.2 Objectives
5 | Literature Review
5.1 Steps Taken to Mitigate Soil Liquefaction
5.2 Old Methods
5.3 Current Industry Standard Methods
5.4 Nanoparticle Mitigation techniques
5.4.1 Bentonite
5.4.2 Laponite
6 | Analysis
6.1 Raw Data Collected from Tongji University
6.2 Analysis of the Effectiveness of Mitigation with Laponite Solution
6.3 Comparison with Other Mitigation Methods
7 | Conclusion
7.1 Conclusions Drawn from Literature Review and Analysis
7.2 Recommendations for Future Study into the Mitigation of Soil Liquefaction
8 | References
9 | Appendix
9.1 Risk Assessment
9.2 Planning Document

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