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KMID : 1024520060150050431
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Journal of the Environmental Sciences
2006 Volume.15 No. 5 p.431 ~ p.438
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An Experimental Study on NOx Degradation Efficiency and Physical Characteristics of Maximum Size 40 mm Porous Concrete
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Hong Chong-Hyun
Kim Moon-Hoon
Ryu Seong-Pil
Jeong Khang-Ok
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Abstract
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The strength, water permeability, and photo-degradation efficiency of NOx of porous concrete with a new concept were studied in this paper. The porous concrete was comprised of coarse aggregate of maximum size 40 mm, cement, silica fume, water and air-entraining(AE) water reducing agent. The strength of porous concrete was strongly related to its matrix proportion and compaction energy. An experimental test was carried out to study the parameters of cement proportions and silica fume content for pavement applications of porous concrete which were paving a footpath, a bikeway, a parking lot, and a driveway. The regressed equations of relation-ships between compressive strength and flexural strength, and coefficient permeability and void ratios were indicated as y=7.69x+71.74 and . A method of making an air purification-functioning road, which was spraying a mixture of a photocatalyst, cement, and water onto the surface of the road, was suggested.
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KEYWORD
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Porous concrete, Photocatalyst, Air purification-functioning road
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