earticle

영어

This study is aimed at providing fundamental data on the durability performance of concrete for artificial ground connected with railway facilities by experimentally evaluating the crack propagation pattern and crack recovery performance according to the vibration load of concrete for artificial ground. Experimental study on the crack initiation pattern and crack recovery performance according to vibrational load of concrete for artificial ground is concluded as follows. 1) The analysis result for the crack generation amount of 24MPa concrete specimen showed that the total crack length of the ordinary Portland cement (OPC) specimen was 210mm and the crack width was 1.8mm whereas the crack lengths of the concrete on the artificial ground were 142mm and 171mm, respectively, indicating that the crack lengths of the concrete on the artificial ground were improved by 19% and 33% and the crack widths were also reduced by 17% and 50%, respectively. 2) The study of the crack generation characteristics of 30MPa concrete specimen showed that the total crack generation length of OPC specimen was 203mm and the crack width was 1.8mm whereas the crack lengths of the concrete on the artificial ground were 101mm and 157mm, and the crack widths were 0.8mm and 1.0mm, indicating that the crack lengths were decreased by 23% and 51% while the crack widths were also decreased by 45% and 56%, respectively.