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The design and behaviour of cement column in soft Bangkok clay

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Petchgate, Warapot 2004 , 'The design and behaviour of cement column in soft Bangkok clay', Research Master thesis, University of Tasmania.

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Abstract

This thesis involves a general review of deep soil treatment methods, which leads to a
detailed review of cement columns as cost effective medium depth foundations. A field
study involving, the improvement of soft Bangkok clay by cement jet grouting was
undertaken using cement columns in the range of 5m to 15m. The columns were loaded
to ultimate to obtain data for verification of the design process. Subsequent to testing
the columns were cored to allow correlation between mix design and in situ column
behaviour.

It was found that the existing design process was inadequate due to high variation
between laboratory mix design and installed column strength. The high variation
resulted in piles crushing before ultimate bearing capacity could be achieved. A new
design process has been developed that will help reduce the likelihood of poor field
behaviour.

Finally a parametric study using a Finite Element Method was undertaken and the results
compared with the data from the field testing. The computer model for the cement
columns was then calibrated to allow its use to predict the ultimate load of the cement
column without the need for further expensive full scale tests.

Item Type: Thesis - Research Master
Authors/Creators:Petchgate, Warapot
Keywords: Concrete construction, Columns, Concrete, Columns, Concrete, Columns
Copyright Holders: The Author
Copyright Information:

Copyright 2004 the author - The University is continuing to endeavour to trace the copyright
owner(s) and in the meantime this item has been reproduced here in good faith. We
would be pleased to hear from the copyright owner(s).

Additional Information:

Available for library use only and limited copying in accordance with the Copyright Act 1968. Thesis (M.Eng.Sc.)--University of Tasmania, 2004. Includes bibliographical references

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