| 摘要 |
PROBLEM TO BE SOLVED: To improve withstand load strength and permeability of a surface elastic layer without causing the displacement and falling thereof even after a long time is passed by surely fixing the surface elastic layer to paved road bed. SOLUTION: The area of the garden of 200 m<SP>2</SP>of an amusement ground in which a high bar, a jungle gym, a slide, and a swing are fixed to a concrete part with anchor bolts around the anchor bolts is dug 80 mm deep, rolled by a damping roller for compacting, crushed stones with diameters of 5 to 20 mm are paved and compacted to a height of 50 mm, and urethane as a primer is filled into a crushed stone layer to bond the crushed stones to each other for complete integration. Rubber particles crushed to those of averaged grain sizes of 3 to 5 mm are mixed into urethane resin liquid, bedded on an inorganic aggregate layer 2 with a thickness of 20 mm, and color rubber chips of 1 to 3 mm in grain size are paved to a thickness of 10 mm to integrally form the entire part of the structural body. COPYRIGHT: (C)2003,JPO
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