Location
New York, New York
Date
17 Apr 2004, 10:30am - 12:30pm
Abstract
1999 Izmit earthquake has shown that a vast number of buildings were built over liquefiable silty soils in Adapazari, Turkey. Most of these buildings have been classified as “moderately” damaged, and mitigation of the liquefaction risk has been made mandatory before these structures are reoccupied. A literature review revealed that low pressure permeation grouting has been used successfully for this purpose. The effectiveness of this method is investigated in this study through geophysical measurements before and after the soil improvement at four different sites in downtown Adapazari . The results of this study indicate that the shear wave velocity of the improved soil is increased approximately twofold and the shear modulus of the improved soil is increased more than threefold. Improvements imparted to the soil are sufficient to reduce the liquefaction risk substantially. These findings are in line with the results reported in the literature. It appears that low permeation grouting is capable of reducing liquefaction risk under existing structures rapidly and at low cost.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2004 University of Missouri--Rolla, 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
Arsoy, Sami and Önalp, Akın, "Reduction of Liquefaction Susceptibility Under Existing Structures by Permeation Grouting" (2004). International Conference on Case Histories in Geotechnical Engineering. 7.
https://scholarsmine.mst.edu/icchge/5icchge/session03/7
Reduction of Liquefaction Susceptibility Under Existing Structures by Permeation Grouting
New York, New York
1999 Izmit earthquake has shown that a vast number of buildings were built over liquefiable silty soils in Adapazari, Turkey. Most of these buildings have been classified as “moderately” damaged, and mitigation of the liquefaction risk has been made mandatory before these structures are reoccupied. A literature review revealed that low pressure permeation grouting has been used successfully for this purpose. The effectiveness of this method is investigated in this study through geophysical measurements before and after the soil improvement at four different sites in downtown Adapazari . The results of this study indicate that the shear wave velocity of the improved soil is increased approximately twofold and the shear modulus of the improved soil is increased more than threefold. Improvements imparted to the soil are sufficient to reduce the liquefaction risk substantially. These findings are in line with the results reported in the literature. It appears that low permeation grouting is capable of reducing liquefaction risk under existing structures rapidly and at low cost.
