Location
Arlington, Virginia
Date
14 Aug 2008, 2:15pm - 4:00pm
Abstract
During the year 1995, at Anta (India) gas power project township a large number of structures, which were constructed 4 to 6 years back started exhibiting damages of varying degree. From the nature and pattern of damages it appeared to be typical of distress due to expansive soil deposits underneath. In order to assess/investigate the causes for damages and suggest remedial measures, boreholes were drilled at suitable locations and soil samples were collected from different depths. Free swell index, percentage swell, swelling pressure and other relevant characteristics of soil samples were determined. The corrective measures suggested to salvage/rectify the distressed structures were treatment of expansive soil through lime slurry pressure injection (LSPI) process. In addition to LSPI, to maintain moisture equilibrium within the soil beneath the structure, plinth protection apron along with low density polyethylene film laid beneath and concrete curtain wall were constructed all around the structures. Post treatment performance of these structures was monitored. All these rectified/renovated structures are under observations since last eleven years and until this date exhibit satisfactory performance. The details of this case study are presented and discussed in the present article.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
6th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2008 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Kate, J. M., "A Case Study on Rectification of Damaged Structures on Expansive Soil Deposits" (2008). International Conference on Case Histories in Geotechnical Engineering. 1.
https://scholarsmine.mst.edu/icchge/6icchge/session07/1
A Case Study on Rectification of Damaged Structures on Expansive Soil Deposits
Arlington, Virginia
During the year 1995, at Anta (India) gas power project township a large number of structures, which were constructed 4 to 6 years back started exhibiting damages of varying degree. From the nature and pattern of damages it appeared to be typical of distress due to expansive soil deposits underneath. In order to assess/investigate the causes for damages and suggest remedial measures, boreholes were drilled at suitable locations and soil samples were collected from different depths. Free swell index, percentage swell, swelling pressure and other relevant characteristics of soil samples were determined. The corrective measures suggested to salvage/rectify the distressed structures were treatment of expansive soil through lime slurry pressure injection (LSPI) process. In addition to LSPI, to maintain moisture equilibrium within the soil beneath the structure, plinth protection apron along with low density polyethylene film laid beneath and concrete curtain wall were constructed all around the structures. Post treatment performance of these structures was monitored. All these rectified/renovated structures are under observations since last eleven years and until this date exhibit satisfactory performance. The details of this case study are presented and discussed in the present article.
