• 한국구조물진단유지관리공학회 논문집
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• 제26권1호
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• pp.1-9
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• 2022

제설제는 동절기 도로 위의 눈을 녹이기 위하여 사용되고 있으나, 서울과 같은 대도시에서 교통이 밀집한 도로 시설물의 열화를 촉진시키는 주요 요인 중의 하나이다. 도로 시설물의 합리적인 유지관리 전략을 수립하기 위하여 제설제에 노출된 도로 시설물의 환경분석이 필요하다. 본 연구는 서울시의 적설량 및 사용된 제설제량을 토대로 외래 염소농도를 계산하였다. 평균 표면 염소이온량을 구하고자 서울시의 5년간 기후환경 및 제설제 사용량을 이용하였으며, 주간선 및 보조간선율 17.5 ~ 30%, 제설제 노출 유효면적율 50 ~ 80% 수준에서 검토하였는데, 농축 속도는 0.073~ 0.077%/년, 최대 표면 염소이온량은 콘크리트 중량대비 2.2 ~ 2.31% 수준이었다. 본 연구결과는 염소이온 프로파일의 예측 또는 콘크리트 구체의 화학적 부식정도 등으로 종합적인 유지관리 대책을 수립하는데 활용될 수 있을 것으로 기대된다.

• 한국도로학회:학술대회논문집
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• 한국도로학회 2005년도 학술발표회 논문집
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• pp.207-214
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• 2005

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2008년도 추계 학술발표회 제20권2호
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• pp.825-834
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• 2008

The safety, serviceability, and design code of the infrastructures such as highway, railroad, bridges, etc. have been analyzed. It is identified that the safety and function of infrastructures in North Korea could have some problems compared with current design codes. After analyzing the results, the multi-step road map for integrating infrastructures in Korea Peninsula is proposed.

• 한국도로학회지:도로
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• 제13권2호
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• pp.38-41
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• 2011

• 한국철도학회:학술대회논문집
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• 한국철도학회 2001년도 추계학술대회 논문집
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• pp.74-82
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• 2001

This paper sets out what can be said in general about pricing within transport sectors. In this paper we briefly restate the economic principles of pricing that hold for two transport sectors-road and rail. This is used as a basis for a discussion of pricing principles in the transport sector. Here we focus on the pricing of user charges of transport infrastructures. We start this paper to analyse road transport sector and compare it with rail sector. In fact as a result of the trend towards rail reform, the issue of charging mechanisms for the use of rail infrastructure has become increasingly important. In this paper, we just take the problem in theory and present some foreign cases. But our long-run objective will be the design of efficient user charges of infrastructures based on fair intermodal competition.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2004년도 가을 학술발표회 논문집
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• pp.157-162
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• 2004

Recently, Life Cycle Cost (LCC) for civil infrastructures, such as pavements, bridges, and dams, has been emphasized. However there are few cost models for road tunnel especially for maintenance phase. The road network is composed of highways, bridges, and road tunnels. Thus it is as important as for road tunnels to keep safe for traffic. The maintenance strategies for road tunnels can be achieved based on the minimization of LCC in maintenance phase. For this purpose, in this paper, cost model and cost classification for road tunnel in maintenance phase are suggested.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 봄 학술발표회 논문집
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• pp.59-64
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• 2003

As the economy of a country develops, the necessity for social overhead capital such as railroad, highway and other transportation infrastructures becomes an utmost issue as the volume of traffic increases. As the standard of living has been raised the needs for ecological road pavement also increase. As a matter of fact, the concrete and asphalt pavement have been constructed without considering the harmony with nature. The Road Compound pavement is constructed with local soils from optimum mixture proportions that did not contaminate the surroundings and represent the ecological pavement.

• 한국농공학회논문집
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• 제63권2호
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• pp.41-50
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• 2021

The asphalt pavement industry has introduced the warm-mix asphalt (WMA) as a mean of energy saving and environmentally safe technology, because the WMA mixture can be mixed and compacted at 30℃ lower than conventional hot-mix asphalt (HMA) at 160℃ or higher. The implementation of WMA can be a good option for paving operations for rural road in remote place, not only due to energy saving and environmental issues, but also lower working temperature. Using WMA technology, the cooled-down asphalt mixture can be still compacted to meet the quality requirement in narrow winding rural road in remote places. Therefore, this study is designed to evaluate engineering properties of WMA binders and concretes, which were prepared for rural road pavement. The objective of the study was to evaluate and suggest proper fundamental properties level of the WMA concrete for rural road pavement. The kinematic viscosity test result indicated that the WMA binders used in this study were effective for compaction at lower temperature, i.e., at 115℃, compared to the HMA binder. According to strength property analyses, it was found that the WMA concrete was acceptable for rural road pavement even though it was compacted at 30℃ lower level. Since the deformation strength (SD) of 3.2 MPa was found to satisfy rutting and cracking resistance minimum guidelines, this value was suggested as a minimum SD value for rural road pavement, considering lack of maintenance program for rural area.

• 한국측량학회지
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• 제33권6호
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• pp.589-594
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• 2015

In reflection of road expansion and increasing use rates, interest has blossomed in predicting driving environment. In addition, a gigantic scale of big data is applied to almost every area around the world. Recently, technology development is being promoted in the area of road traffic particularly for traffic information service and analysis system in utilization of big data. This study examines actual cases of road management systems and road information analysis technologies, home and abroad. Based on the result, the limitations of existing technologies and road management systems are analyzed. In this study, a development direction and expected effort of the prediction of road information are presented. This study also examines regression analysis about relationship between guide name and traffic volume. According to the development of driving environment prediction platform, it will be possible to serve more reliable road information and also it will make safe and smart road infrastructures.

• 한국도로학회논문집
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• 제16권4호
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• pp.75-86
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• 2014

PURPOSES: The aim of this paper is developing user-oriented flexible Level Of Service (LOS) system for integrated asset management of various road facilities. It is essential to overcome limitations of general management systems which only focus on a type of assets (e.g. pavement, bridge etc.), and to serve a customizable LOS platform for smooth implementation and future improvement of the LOS considering various managerial environments of road agencies. METHODS: This study suggested a total framework of the LOS system as a process for self-development, operation and improvement of LOS system to conduct the PDCA (Plan-Do-Check-Act) in management process. In the process, we adopted user-customizable elements regarding asset definition, service index and evaluation method to match with the managerial environment of road agencies. In addition, we conducted an empirical study on the entire process of the suggested LOS system with a real road agency (Korea Express Highway) to prove applicability of the LOS system. RESULTS: From the empirical study, we confirmed that the suggested LOS system framework were suitable for development of customized LOS system. In addition, evaluation of asset conditions by LOS ratings, and quantification of vision achievement of the Korea Express Highway were successfully made. It would be the first trial in integrated management approach with LOS systems for numerous road facilities. CONCLUSIONS : It was recognized that easy application and sustainable improvement of the LOS was the most critical point in asset management. The suggested LOS system would be a powerful weapon as a managerial tool in preparing tight budget, aging infrastructures, and increased demands for more accountability both in Korea and internationally. Implementation of the LOS system needs to be expanded to the other infrastructure members to serve satisfactory level of service to taxpayers.