Sand-rubber mixtures as vibration dampening foundation materials: scaled physical model studies
Sand-rubber mixtures as vibration dampening foundation materials: scaled physical model studies
The accumulation of scrap rubber tires is a serious environmental issue. Rubber is a good damping material. In view of these, it is prudent to use rubber along with soil for engineering applications in general and possibly as foundation materials in particular. In this regard, some past studies have discretely evaluated the physical and mechanical properties of soil-rubber mixtures. However, there is a lack of comprehensive experimental studies highlighting the significance of the use of sand-rubber mixtures as vibration dampening foundation materials. The present study deals with the instrumented laboratory scaled physical models subjected to a series of impact hammer tests. Different base conditions for the physical models consisting of fixed base, and structure founded on sand-rubber mixture layer in a tank filled with sand are considered. The impact force and the acceleration responses of the structure are recorded using an HBM made amplifier with the data acquisition system. The damping ratio values are estimated from the frequency response function plots of the measured signals. The results of the present study show that the sand-rubber mixtures possess an adequate potential for their application as vibration dampening foundation materials for low-rise buildings.
B. R. Madhusudhan
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
D - Current and new construction methods
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