• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1999년도 학회창립 10주년 기념 1999년도 가을 학술발표회 논문집
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• pp.861-868
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• 1999

Drainage concrete pavement, unlike water permeable concrete pavement, is to preclude the pavement from overflowing with water, such as rain water, from infiltrating into earth by placing a border in the middle layer which makes water to flow through the surface of the border to the conduit. Drainage concrete pavement enhances car wheel resistance to slippery and wet road surface and imbibes noise caused by friction on the road. Also, by using pigment, it adds to the beauty of the environment. Drainage concrete pavement can be used for sidewalks, roadways, parking lots and expressways.

• 생태와환경
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• 제38권spc호
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• pp.58-61
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• 2005

Environmental polluting materials from road surface drainage are a significant nonpoint source influenced to the eutrophication of lake and ecosystems with a transport development in recent years. To elucidate the discharge characteristics, the changing patterns in concentrations of polluting materials such as suspended solid (SS), chemical oxygen demand (COD), nitrogenous and phosphorus nutrients in drainage waters, were investigated during rainfall. Load variation of COD concentration in drainage water samples was closely related to that of SS concentration. This indicates that SS contained a greater part of organic matter. A quite difference between the past pavement and the new well-drainage pavement system was observed in the concentrations of SS and COD in drainage waters. Appreciable concentrations of nitrite and nitrate were determined in drainage waters. The present results indicate that the drainage water from road surfaces is a significant nonpoint source, and that the well-drainage pavement system introduced to skid prevention has an effect on the decreases of pollutants.

• 한국도로학회논문집
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• 제20권3호
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• pp.47-57
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• 2018

PURPOSES : The permeable pavement type has been rapidly developed for solving problems regarding traffic noise in the area of housing complex and heavy rainwater drainage in order to account for the climate change. In this regards, the objective of this study is to figure out the characteristics of pavement types. METHODS : The laboratory test for deriving optimum asphalt content (OAC) was conducted using the mixtures of the permeable asphalt surface for the pavement surface from Marshall compaction method. Based on its results, the pavement construction at the test field was conducted. After that, the site performance tests for measuring the traffic noise, strength and permeability were carried out for the relative evaluation in 2 months after the traffic opening. The specific site tests are noble close proximity method (NCPX), Light falling deflectometer test (LFWD) and the compact permeability test. RESULTS : The ordered highest values of the traffic noise level can be found such as normal dense graded asphalt, drainage and porous structure types. In the results from LFWD, the strength values of the porous and drainage asphalt types had been lower, but the strength of normal asphalt structure had relatively stayed high. CONCLUSIONS :The porous structure has been shown to perform significantly better in permeability and noise reduction than others. In addition to this study, the evaluation of the properties and the determination of the optimum thickness for the subgrade course under the porous pavement will be conducted using ground investigation technique in the further research.

• 한국도로학회논문집
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• 제15권3호
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• pp.45-52
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• 2013

PURPOSES : This study is to construct the regression models of drainage asphalt concrete specimens and to provide the appropriate coefficients of hydraulic conductivity prediction models. METHODS: In terms of easy calculation of the hydraulic conductivity from porosity of asphalt concrete pavement, the estimation model of hydraulic conductivity was proposed using regression analysis. 10 specimens of drainage asphalt concrete pavement were made for measurement of the hydraulic conductivity. Hydraulic conductivity model proposed in this study was calculated by empirical model based on porosity and the grain size. In this study, it shows the compared results from permeability measured test and empirical equation, and the suitability of proposed model, using regression analysis. RESULTS: As the result of the regression analysis, the hydraulic conductivity calculated from the proposal model was similar to that resulted from permeability measured test. Also result of RMSE (Root Mean Square Error) analysis, a proposed regression model is resulted in more accurate model. CONCLUSIONS: The proposed model can be used in case of estimating the hydraulic conductivity at drainage asphalt concrete pavements in fields.

• 한국방재학회 논문집
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• 제9권3호
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• pp.9-17
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• 2009

현재까지의 일반적인 도로하부 배수설계방법은 구성층이 완전포화 되었다는 가정하에 현장실험결과 및 이론적인 해석해를 바탕으로 개발되었다. 본 연구에서는 포장하부구성층의 불포화상태가 포장체의 배수에 미치는 영향을 분석하였다. 상용의 유한요소해석 프로그램인 SEEP/W를 이용하여 불포화상태에서의 포장하부구성층과 그 투수특성을 달리하여 포장하부층에서의 배수효과를 분석하였다. 반면 현재 포장하부배수해석을 위하여 가장 널리 사용되는 미 연방도로국 개발 DRIP 프로그램은 포장하부구 성층이 완전포화 되어있다고 가정한다. 불포화와 포화가정에 따른 배수효과의 차이를 비교, 분석하였으며 불포화가정의 경우 배수시간이 포화에 비하여 크게 오래 걸려 배수효과가 떨어짐이 확인되었다.

• 한국도로학회논문집
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• 제9권2호
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• pp.129-140
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• 2007

본 연구의 주목적은 최근 국내 아스팔트 교면포장의 가장 빈번한 파손의 하나인 포트홀의 발생을 저감하기 위해 포장체내에 체류된 수분을 신속히 배수할 수 있는 배수시스템을 개발하는 것이다. 이러한 배수시스템은 방수층과 포장층 사이에 $2{\sim}3cm$의 두께로 박층의 배수층을 구성하는 것으로서 방수층의 내구성 확보와 골재 최대입경 10mm이하의 배수성 혼합물을 박층으로 시공하는 기술이 가장 중요한 사항이다. 이를 위해 본 연구에서는 먼저 NCAT 배합설계법을 바탕으로 10mm 이하 배수성 혼합물을 개발하였고, 다양한 실내시험을 통하여 배수성 혼합물이 모든 품질기준을 만족함을 확인하였다. 방수층의 경우 MMA(Methyl Methacrylate)계 방수제의 적용성을 평가하기 위하여 저온 휨 시험, 접착인장강도 시험 등의 시험을 실시하였고 모든 물성이 기준을 만족하였다. 본 연구에서 개발된 배수시스템의 현장시공성 및 공용성을 평가하기 위하여 고속도로의 1개소 교량에 시험시공을 실시하였다. 시공후 각 포장층 재료에 대한 품질확인 시험결과 모두 기준을 만족하였고 체류수가 원활히 배수되는 것을 확인할 수 있었다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2009년도 춘계 학술발표회
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• pp.966-972
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• 2009

Soil-aggregate system in pavement foundations exist in unsaturated conditions. However, change in water content on foundation layers due to joint and structural cracks during rainfall may cause problems like layer deformations or partial settlements. Therefore, a need exist to evaluate the infiltration and drainage capacity of soil-aggregate foundation system under both saturated and unsaturated conditions. To do that, a laboratory soil-water characteristic curve and permeability under unsaturated conditions are assessed to establish hydraulic properties of geomaterials and limited numerical analysis are performed respectively. As a result, it was found that suction profiles and drainage process was greatly influenced by the initial suction of soil-aggregate system at the time of infiltration, soil water characteristics curves, and hysteresis effects.

• 한국재난정보학회 논문집
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• 제7권2호
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• pp.87-95
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• 2011

노면의 미끄럼 저항성은 교통안전과 직결되는 도로 포장의 중요한 특성이다. 특히 우천 시 차량의 미끄러짐에 의한 교통사고를 줄이기 위해서는 도로의 성능 평가 시 반드시 고려해야 할 사항이다. 또한 자동차의 성능이 개선되고 운전자의 연령이 상대적으로 낮아짐으로써 고속주행을 하거나 급제동을 하는 운전 행태가 증가함에 따라 포장의 미끄럼저항성 역시 개선할 필요성이 더욱 증가하게 되었다. 그러므로 교통사고를 줄이기 위해서는 노면의 미끄럼저항성 시험을 통해 포장의 품질을 검증하고 또 향상시켜야 한다. 본 연구에서는 미끄럼 포장의 품질을 검증하기 위한 방법으로 휴대용 미끄럼저항 시험기 및 자동식 미끄럼저항 측정 장비의 측정원리를 분석하여 실제 포장변에 대하여 미끄럼 저항성을 평가하도록 하였다. 일반 밀입도 포장, 배수성 포장, SMA 포장에 실시한 미끄럼 저항성 평가는 배수성 포장과 SMA 포장의 노후화에 따라 일반 밀입도 포장의 미끄럼 저항성이 가장 크게 나타났다.

• 한국농공학회논문집
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• 제54권2호
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• pp.157-166
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• 2012

Most of the roads are paved with impermeable materials such as asphalt concrete and cement concrete, and in the event of heavy rainfall, rainwater directly flows into river through a drainage hole on the pavement surface. This large quantity of rainwater directly spilled into the river frequently leads to the flooding of urban streams, damaging lowlands and the lower reaches of a river. In recent years there has been a great deal of ongoing research concerning water permeability and drainage in pavements. Accordingly, in this research, a porous polymer concrete was developed for permeable pavement by using unsaturated polyester resin as a binder, recycled aggregate as coarse aggregate, fly ash and blast furnace slag as filler, and its physical and mechanical properties were investigated. Also, 3 types of permeable polymer block by optimum mix design were developed and rainfall runoff reduction effects by permeability pavement using permeable polymer block were analyzed based on hydraulic experimental model. The infiltration volume, infiltration ratio, runoff initial time and runoff volume in permeability pavement with permeable polymer block of $300{\times}300{\times}80$ mm were evaluated for 50, 100 and 200mm/hr rainfall intensity.

• 한국재난정보학회 논문집
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• 제2권1호
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• pp.53-64
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• 2006

This study presents the laboratory properties on the frost heave under various moisture contents and compaction efforts in pavement subgrade soil. Many researches were conducted on the frost heave. However, the researches with the domestic soils have not been so active until now. In particular, the evaluation of the frost heave in pavement subgrade soils was not established by many researchers. The problems relating with the frost heave have been serious causes in the distresses of pavements. The study was performed using an appropriate field simulation. The research results revealed that the drainage conditions in earth work should be treated cautiously.