ABSTRACT
Liquefaction is a critical problem in terms of soil – structure interaction both up to date reinforced concrete buildings and historical sites including masonry or adobe type of building materials. Although the excessive settlement potentials can be limited during liquefaction thank to mat foundation or deep foundation at the present time, vital differential settlement levels can be observed in monuments having single footings, generally. Therefore, special soil improvement techniques have been become unavoidable in terms of existing historical structures. In this study, the effect of water supply was investigated in liquefiable sandy soil that was improved via sodium polyacrylate powder inside a special test box. The shaking table tests were performed on various applications of mentioned chemical agent as complete mixing operation, horizontal case and vertical case with different proportions under constant head water supply and out of water supply to simulate the pressurized ground water flow. The foundation of building was represented by steel plate at the center of ground surface. The experimental results revealed that the water supply has a significant effect on the settlement values of foundation and the change in pore water pressure levels. Thus, the flow rate of ground water plays a key role in the selection of the proper soil treatment method.
