Abstract The effect of aging on the mechanical properties silicone rubber (SR) was investigated by means ultrasonic, dynamic analysis, and FTIR techniques. Both longitudinal shear (Ultrasonic wave velocities) were measured at room temperature frequencies 2 MHz. Density, molar volume, ultrasonic velocities, tensile strength, properties, FT–IR showed improvement network with time from 0 to 70 day...

In general, the physical and rheological properties of asphalt binder are directly affecting resistance mix to permanent deformation (rutting), water damage, thermal cracking. The degradation in these leads severe distresses that appear pavement and, consequently, make repair maintenance very expensive. Since modified-asphalt cement may help minimize such aforementioned distresses, this researc...

This study presents results of subjective judgments to simulated floor impact sound to create classification scheme of heavy weight impact sound with standardized rubber ball. The floor impact sound samples were recorded in a wood-frame test house with different floor configurations and were reproduced in an anechoic chamber. Using the relationship between subjective rating and physical indices...

Six patients with severe haemophilic arthropathy of the elbow have been treated by limited excision arthroplasty using a sheet of silicone rubber as an interposition membrane. There were no complications. The symptoms and signs before and after operation have been assessed using the grading system advocated recently by the World Federation of Haemophilia. In all cases there was relief of pain a...