Innovative restoration method for concrete track settlement |
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| Authors: | IlWha Lee SungJin Lee SuHyung Lee and HakYong Shin |
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| Institution: | Korea Railroad Research Institute, Korea;Korea Railroad Research Institute, Korea;Korea Railroad Research Institute, Korea;Jeeseung Construction Company, Korea |
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| Abstract: | An active application of a concrete track is expected for the future construction of railroads. For successful concrete track
construction and operation in earthwork areas, the residual settlement should be reasonably controlled by using an appropriate
method. The maintenance for excessive settlement is very difficult on the operating line because the maintenance
method is very restrictive. The objective of this study is to introduce pressurized rapid-hardening cement grouting (PRCG)
method to restore a subsided concrete track without any adverse effects on train operation. This method involves the use of
special types of materials (very quick hardening and middle-hardening mortar), compact grouting equipment, and a special
construction process. In spite of the extremely restrictive environment, this method has been demonstrated to be very effective
and reasonable through laboratory and field tests. |
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| Keywords: | PRCG method concrete track settlement railway |
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