• 한국도로학회:학술대회논문집
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• 2008.10a
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• pp.407-411
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• 2008

• 한국도로학회:학술대회논문집
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• 2008.10a
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• pp.387-393
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• 2008

• 한국도로학회:학술대회논문집
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• 2008.10a
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• pp.163-168
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• 2008

• 한국도로학회:학술대회논문집
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• 2008.10a
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• pp.169-173
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• 2008

• 한국도로학회:학술대회논문집
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• 2008.10a
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• pp.205-209
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• 2008

• 한국도로학회:학술대회논문집
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• 2008.10a
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• pp.175-182
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• 2008

• 한국도로학회:학술대회논문집
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• 2008.10a
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• pp.233-241
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• 2008

• International Journal of Highway Engineering
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• v.2 no.3
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• pp.145-153
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• 2000

Pavement evaluation is a fundamental component for rational pavement management. Optimal rehabilitation method and the priority of rehabilitation should be based on the evaluation data. Some types of pavement condition index are needed for objective evaluation of Pavement condition and management of road network. In this study a expressway concrete pavement condition index model is developed through regression analysis that correlates panel rating with distress measurement from the test sections. The derived condition index can be used for network level PMS for the expressway concrete pavement. Correlation coefficient of the model was 0.68. The selected independent variables were International Roughness Index, crack and area of patching.

• Journal of the Korean Society of Safety
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• v.33 no.3
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• pp.52-57
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• 2018

The pile construction method is changing from the pile driving operation to the injected precast pile method. It is to prevent environmental damage and to minimize complaints caused by noise. Therefore, economic alternatives optimized for the injected precast pile method are required. In this study, the enhanced spun reinforced concrete piles manufactured by high strength materials were proposed. Experimental tests were conducted to evaluate their structural safety and nonlinear finite element analysis was performed to improve the reliability of experimental results. The experimental results and the analytical results were in good agreement with each other and the proposed enhanced spun reinforced concrete pile has better performance than that required by the design. However, the performance of the joint using the existing method used in the PHC pile was considered to be insufficient.

• Journal of the Korean GEO-environmental Society
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• v.18 no.12
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• pp.59-63
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• 2017

In the cold region, road surface is frequently frozen, resulting in property/facility damage as well as people's death. In order to prevent the road surface from being frozen, conventional deicing methods such as salt, geothermal, and electric wires have been widely used. However, theses methods have some problems such as anti-environment, high-construction and -maintenance cost and so on. To improve the drawbacks of aforementioned methods, carbon nanotube (CNT) was used as an heating material in the laboratory test. Through the test, heat transferring effect of CNT on the concrete slab was investigated and maximum interval of CNT installation was determined.