| 摘要 |
PROBLEM TO BE SOLVED: To increase the permeable water volume of blocks to be laid on a road, a pass, a park, etc. SOLUTION: In the block laid on a road, a pass, a park, etc., water-permeable holes 6 penetrated from a surface to a rear are formed. In the block, a raw material is formed of either one of concrete, asphalt, plastics and ceramics. It is preferable that the block has a hollow section 7 and the water-permeable holes are penetrated through the hollow section. The hollow section is filled with fibers 11 and/or active carbon 12.
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