• 콘크리트학회논문집
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• 제15권3호
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• pp.504-511
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• 2003

Environmental noise at high intensities directly affects human health by causing hearing loss. Although scientific evidence currently is not conclusive, noise is suspected of causing or aggravating other diseases. Environmental noise indirectly affects human welfare by interfering with sleep, thought, and conversation. Noise emission from motorized vehicle includes power unit noise, tire/pavement noise and aerodynamic noise. Among them, tire/pavement noise is noise emission from interaction of the tire and road surface when the vehicle cruises over the surface of pavement. In general, portland cement concrete(PCC) pavement is known to create more noise than asphaltic surfaces though it has the advantage of durability and superior surface friction. However, the results of preliminary laboratory test showed exposed aggregate concrete(EAC) has and effect on reducing tire/pavement noise. Based on the laboratory test. pilot construction of exposed aggregate concrete pavement was completed and series of in-situ measurements were conducted for noise analysis including the pass-by noise measurement and the close-proximity method. Conclusively, it is expected that tire/pavement noise represent significant portion of noise levels at higher frequencies and it would be reduced on special textures of pavement such as exposed aggregate concrete.

• 콘크리트학회논문집
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• 제15권2호
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• pp.352-359
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• 2003

Portland cement concrete (PCC) pavements are more durable and have superior surface friction compared to most dense-graded asphalt. However, data collected to date generally show PCC pavements to create more noise than asphaltic surfaces. Recent research has shown that some of the new concrete pavement textures are worthy of further examination. One of these, exposed aggregate surfaces, appear to provide better noise quality characteristics as well as good frictional characteristics and durability. In this paper, we considered the relationship between noise level and various textures of exposed aggregate concrete (EAC) pavement by tire impact noise measurement. As the results of that, it was suggested that optimum surface texture and manufacturing condition of EAC in order to reduce tire and pavement interaction noise. Conclusively, we would like to recommend optimum condition of EAC pavement at the respects of materials and treatment. Furthermore, Frequency spectrum as well as A-weighted noise level was also evaluated to analyze properties of noise between PCC and EAC.

• 한국도로학회논문집
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• 제12권1호
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• pp.87-98
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• 2010

소입경 골재노출 콘크리트포장은 콘크리트 타설 직후 포장표면에 응결지연제를 살포하여 표면으로부터 2~3mm 정도의 모르타르 경화를 늦추게 한 후 표면의 모르타르 제거를 통해 굵은 골재를 포장표면에 노출시키는 공법이다. 소입경 골재노출 콘크리트포장의 타이어-노면 소음은 일반 콘크리트포장보다 작으면서도 적정한 미끄럼저항을 장기간 유지한다는 장점을 가지고 있다. 성공적인 소입경 골재노출 콘크리트포장의 건설을 위해서는 굵은골재의 최대입경이 적정하여야 하며 적정량의 굵은골재를 포장표면에 균일하게 노출하도록 해야 하기 때문에 이를 위한 적절한 배합과 노출기법의 도출이 요구된다. 본 연구에서는 소입경 골재노출 콘크리트포장의 시험시공을 실시하여 초기 공용성을 평가하였으며, 이를 통하여 적정 강도, 저소음 및 적정 미끄럼저항을 확보함을 확인하였다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 봄 학술발표회 논문집
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• pp.1067-1070
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• 2003

The effects of traffic noise are a serious concern in many urban communities throughout the world. Environmental noise at high intensities directly affects human health by causing hearing loss and indirectly affects human welfare by interfering with sleep, thought, and conversation. In general, portland cement concrete(PCC) pavement is known to create more noise than asphaltic surfaces though it has the advantage of durability and superior surface. However, the results of preliminary laboratory test showed exposed aggregate concrete(EAC) have an effect on reducing traffic noise. Based on the laboratory test, pilot construction of exposed aggregate concrete was performed and series of in-situ measurements were conducted for noise analysis which included the pass-by noise measurement and the close-proximity method. Conclusively, It is expected that tire/pavement noise which is represented much noise levels at higher frequencies would be significantly reduced on special textures of pavement as like exposed aggregate concrete.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2002년도 봄 학술발표회 논문집
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• pp.119-124
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• 2002

Generally, Portland cement concrete(PCC) pavements have the advantage of durability and superior surface friction when compared to most dense-graded asphalt. However, It is known that PCC pavements create more noise than asphaltic surfaces due to the noise from interaction of tire and pavement surface. Recently exposed aggregate concrete(EAC) pavement was sugested to reduce traffic noise. So in this paper, we considered several materials and mixture proportions for proper depth of exposed aggregate which was measured by the sand patching test, and then according to those relationships, we tried to find out dosage of retarding agents and optimum mixture proportions for expecting good effects to noise reduction. It were also evaluated sound level at every conditions of surface texture as like depth of aggregate exposed, profile peak, distance of aggregate and types of aggregate.

• 한국도로학회논문집
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• 제11권2호
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• pp.1-15
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• 2009

골재노출콘크리트포장은 콘크리트 타설 직후 포장표면에 응결지연제를 살포하여 표면으로부터 깊이 2$\sim$3mm 정도의 모르타르 경화를 늦추게 한 후 표면의 모르타르 제거를 통해 굵은골재를 포장표면에 노출시키는 공법이다. 골재노출콘크리트포장의 타이어-노면 소음이 일반 콘크리트포장보다 작으면서도 적정한 미끄럼저항을 장기간 유지한다는 장점을 가지고 있다. 특히 굵은골재가 소입경일수록 소음저감효과가 우수한 것으로 알려져 있다. 성공적인 소입경 골재노출콘크리트포장의 건설을 위해서는 굵은골재의 최대입경이 적정하여야 하며, 적정량의 굵은골재를 포장표면에 균일하게 노출하도록 해야 하며 이를 위한 적절한 배합과 노출기법의 도출이 요구된다. 일반적인 콘크리트포장의 배합기준은 강도설계로 이루어지지만 소입경 골재노출콘크리트포장의 경우 강도뿐만 아니라 소음저감효과, 미끄럼저항을 적절히 발현시킬 수 있는 배합설계를 실시하기 위해서는 강도실험 외에도 노면의 미끄럼저항, 소음을 고려할 필요가 있다. 본 연구에서는 소입경 골재노출콘크리트포장에 대하여 적정 강도를 유지하며 포장표면조직의 소음 저감효과 및 적정 미끄럼저항성을 동시에 만족시킬 수 있도록 표면조직을 형성할 수 있는 최적배합에 대해 제시하였다. 또한 콘크리트포장은 온도, 습도 및 대기환경에 의해 모르타르의 경화속도가 달라지므로 콘크리트의 물리적 성질을 정량적으로 고려한 최적 노출기법이 제시되었다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 가을 학술발표회 논문집
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• pp.461-464
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• 2003

Portland Cement Concrete (PCC) pavements have the advantage of durability and superior surface friction when compared to most dense-graded asphalt. However, data collected to date generally show PCC pavements to create more noise than asphaltic surfaces. As the results of research, surfaces of exposed aggregate, tining and grooving concrete pavements appear to provide better noise quality characteristics as well as good frictional characteristics and durability. In this paper, several methods of texturing were considered to reduce tire/pavement noise. As the results of this paper, PCC pavements with special texturing have superior surface friction as well as noise reductions when compared to conventional PCC pavement. Especially, Exposed Aggregate Concrete (EAC) surface appears to provide better noise quality characteristics. Conclusively, if overall noise and safety are considered simultaneously, EAC pavement that provides satisfactory friction as well as better noise reductions is suggested.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2001년도 가을 학술발표회 논문집
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• pp.647-650
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• 2001

The traffic noise from automobiles have been causing so serious problems in urban areas that the study and solutions to reduce noise and air pollution have been required. In general, Portland cement concrete(PCC) pavements have the advantage of durability and superior surface friction when compared to most dense-graded asphalt. However, data collected to date generally show PCC pavements to create more noise than asphaltic surfaces. Therefore, recent research has shown some new concrete pavement textures to be worth further examination. Exposed Aggregate Pavements have also been evaluated for noise impacts. This PCC surface is accomplished by brushing the surface of the plastic concrete to expose the aggregate, increasing the macro texture. In this study, in order to manufacture Aggregate Exposed Concrete for low noise pavements, we considered the effects of retarder agents according to dosage and curing conditions. So we tried to find out relationship between textures of surface and effects of retarder.

• 한국도로학회논문집
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• 제6권4호
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• pp.35-43
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• 2004

미끄럼저항은 자동차의 타이 어 와 포장노면 사이에서 발생하는 미끄러짐을 방지하여 제동거리를 제어하고 주행 안전성을 확보하는데 중요한 역할을 한다. 우천시의 미끄럼저항 감소는 치명적인 교통사고를 유발할 수 있다. 노면위에 남은 토사 및 겨울철 제설재는 미끄럼저항을 감소시킬 수 있는 요소가 될 수 있다. 본 연구에서는 노면상의 잔류하는 이물질이 타이어와 포장노면사이에서 발생하는 미끄럼저항에 미치는 영향을 다양한 콘크리트 노면조직 형태 (횡방향타이닝, 종방향타이닝, 골재노출) 및 노면조직의 마모조건(신설노면, 마모된 노면)에 대하여 검토하였다. 노면상의 이물질로는 모래, 염화칼슘과 자동차에서 발생하는 폐 오일을 사용하였으며 각 경우별로 이물질의 양을 달리하여, 모래의 경우는 입도 및 양을 달리해가며 미끄럼저항에 미치는 영향을 검토하였다.

• 한국도로학회:학술대회논문집
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• 한국도로학회 2005년도 춘계학술대회 논문집
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• pp.91-101
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• 2005