| 摘要 |
A water-permeable solid material is provided having water-permeable properties together with strength for use as paving materials by effective use of so-called "clinker ash" generated from thermal power plants and the like. In addition, in order to prevent abrasions when pedestrians fall in the case in which a solid material is used as a paving material, a water-permeable solid material is provided having a smooth surface in which the surface irregularities is reduced as small as possible. Coal ash is used as an aggregate, and the particles of the coal ash are tightly bound with each other by a small amount of cement using the pozzolana property of the coal ash. In addition, an inorganic material is interposed between particles of the coal ash, which is used as an aggregate, so as to improve the strength while ensuring voids.
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