| 摘要 |
PROBLEM TO BE SOLVED: To suppress a temperature rise on a surface over a rather long period by including a diatomacious filter aid with good moisture absorbing and releasing properties into a water retaining material. SOLUTION: This filling material for a pavement body including a cement binding material and the water retaining material contains the 30 to 80 pts.mass diatomacious filter aid of 0.1 to 50μm in particle size in the water retaining material when the water retaining material is 100 pts.mass. The water retaining pavement body is formed of a pavement body with a porosity of 10 to 40% and a mixture filled in the cavity portions of the pavement body. The mixture comprises a 100 pts.mass cement-based binder, a 5 to 80 pts.mass water retaining material including the diatomacious filter aid, and 50 to 300 pts.mass water. The water retaining material desirably contains a 30 to 80 pts.mass diatomacious filter aid of 0.1 to 50μm in particle size when the water retaining material is 100 pts.mass. Further, the water retaining material may be included in one or both of a non-baked vermiculite with water retaining property and a paper-making sludge-burned ash. COPYRIGHT: (C)2007,JPO&INPIT
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