| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide such porous concrete as achieving a water cutoff performance for preventing rainwater or the like from permeating to an area below a single layer of pavement, water permeability sufficient for draining rainwater to an area above the single layer of pavement and sufficient noise reduction performance, through one time of construction, and a pavement method utilizing the same. <P>SOLUTION: Porous concrete to be used for paving a road is characterized in containing coarse aggregates of 1000 to 2000 kg per 1 m<SP POS="POST">3</SP>, sand of 500 kg or less, cement of 200 to 550 kg, water for such a quantity that a water/cement ratio (W/C) becomes 15 to 50%, and thixotropy additive of which the evaporation residue is 0.5 to 20% with respect to a cement mass. <P>COPYRIGHT: (C)2013,JPO&INPIT |
