As two kinds of solid wastes, waste tires and steel slag have caused serious threats to the environment. Both tire rubber (WTR) powder (SSP) can improve performance asphalt, while indexes modification mechanism modified asphalt are not clear. In this paper, with SSP WTR was prepared, its evaluated. The physical properties WTR, including penetration, softening point, viscosity, were investigated...

The ability of hardness discrimination in 11 implant denture wearers was compared with those in 10 bridge wearers and 11 normal dentate subjects. The hardness discrimination was tested using silicone rubber blocks having rubber hardness that ranged at intervals of 10 degrees from 30 degrees to 70 degrees. Using a rubber block with rubber hardness of 50 degrees as a standard, the ability of disc...