Possess exemption shaking

摘要

PROBLEM TO BE SOLVED: To improve temperature dependence of elastic property and high attenuation property while securing processability of a rubber composition for forming a rubber layer, in a base-isolation rubber laminate having a laminated structure formed by laminating a rigid plate having rigidity such as a metal plate and the rubber layer alternately.;SOLUTION: The base-isolation rubber laminate having a structure formed by laminating the rigid plate having rigidity and the rubber layer alternately is molded using a rubber material with a butadiene rubber as a main ingredient in the rubber layer; and the rubber composition comprises 90 to 120 pts.wt. of carbon black having a nitrogen adsorption specific surface of 150 to 230 m²/g and a distance between aggregates of 7 to 12 nm, and 10 to 100 pts.wt. of at lest one kind of asphalts, tars and pitches, to 100 pts.wt. of the rubber material.;COPYRIGHT: (C)2007,JPO&INPIT