Other

Kiyokata Ishii

Hideharu Osada

Tadami Kamaishi

The invention provides: an aggregate comprising a core made of an elastic material and a surfacing material adhered thereon by use of a resin; a manufacturing process of the novel aggregate comprising such steps as mixing 100 parts by weight of a core made of an elastic material with 0.1 to 20 parts by weight of a resin to cause the resin to stick uniformly on the surface of the core, and thereafter, contacting and mixing the core with 1 or more part by weight of a surfacing material having one-tenth or less average particle diameter of that of the core; and a resin mortar mixing the novel aggregate, a resin and preferably other additives.

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Urayasu, Japan

Kiyokata Ishii