TABLE OF CONTENTS - The Professional Green Building Council

Theme A: Connecting the Pearl River Delta Regionfor the optimal designing of porosity for concrete penetrative pavements [3] .Figure 2 shows the special porous concrete can be used as noise barrier toimprove sound environment quality of highway.The surface small hole of porous concrete pavement cause the surface light todiffuse ,so it can avoid the glare created by directional reflection on the surfaceof the polished slab stone and brick. Porous concrete pavement can clear up therain water on the surface promptly ,so it can overcome the weakness of‘floating’、 ‘splashing’ and ‘glaring’ . By this measure , porous concretepavement can improve traffic safety.3.3 the affect of porous concrete pavement in improving ‘heat-islandeffect’ in urban areaThe rain water that detained in porous concrete pavements and its lower fillsevaporates and absorbs a great deal latent heat and reveals heat by solarradiation. The air temperature and pavement surface temperature is dropped.‘Heat-island effect’ is lightened effectively. Tests of evaporation and cooling ofporous concrete pavement are carried out under the condition of simulative heatradiation and ventilation. The results of the tests show the changing laws of theevaporating and cooling performance of different porosity porous concretepavement. These results provide reference for the optimal porosity design ofevaporation and cooling of porous concrete pavement and porous ceramics bricks[4] . The steam evaporates from porous pavement can add air humidity, so itcan lighten ‘urban dryness’. This way can also reduce the harm of “duststorm.” An hourly measurement and analysis of the summer thermalenvironmental index (temperature, humidity and sun radiation ) on Nanjing’stypical squares has proved this point [5] . Meanwhile, evaporating added the airhumidity, this way could improve “dry heat” . One of the reasons that the “duststorm” in less rain season of north cities was that the air’s humidity was toolow. The research of Japan environment department which directed against‘heat-island effect’ in Tokyo stated clearly that one of the effects by ‘heatislandeffect’ was clouds of dust flying up because of less evaporating and75