Study on Dynamic Characteristics of Rubber-Red Clay Mixtures
| Autor: | Qinqin Wang, Dipu Luo, Kun Zhang, Kaisheng Chen, Bo Zhou |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Damping ratio
Materials science Article Subject Quantitative Biology::Tissues and Organs 0211 other engineering and technologies General Engineering 02 engineering and technology Overburden pressure Triaxial shear test Physics::Classical Physics Shear modulus Condensed Matter::Soft Condensed Matter Condensed Matter::Materials Science Natural rubber visual_art 021105 building & construction Shear stress visual_art.visual_art_medium TA401-492 General Materials Science Particle size Composite material Water content Materials of engineering and construction. Mechanics of materials 021101 geological & geomatics engineering |
| Zdroj: | Advances in Materials Science and Engineering, Vol 2020 (2020) |
| ISSN: | 1687-8442 1687-8434 |
| Popis: | Rubber powder formed from discarded tire rubber is mixed with red clay to form a rubber-red clay mixture. The dynamic triaxial test was carried out on the mixtures under different conditions. The effects of rubber content, rubber particle size, moisture content of mixed soil, compactness, confining pressure, and vibration frequency on shear strain relation, dynamic shear modulus, and damping ratio of the mixture were investigated. The results show that under the same dynamic strain, the dynamic shear stress-strain curve of rubber mixed soil decreases with the increase in rubber particle content and moisture content and decrease in rubber particle size. On the other hand, it increases with the increase in compactness, confining pressure, and vibration frequency, and as the dynamic strain increases, the τd-γd curve becomes more nonlinear. In addition, with the increase in the rubber particle content, the dynamic shear modulus decreased while the damping ratio increased. When the content was 2%, the change was fastest. After continued addition, it gradually became stable, and when the decrease in rubber particle size also shows the same pattern, 2.00 mm rubber-red clay mixture shows better structure. The water content has great influence on dynamic shear modulus and damping ratio of rubber-red clay mixtures. With the increase in compactness, confining pressure, and vibration frequency, the interaction between mixed soil particles was enhanced, the dynamic shear modulus increased, and the damping ratio decreased. |
| Databáze: | OpenAIRE |
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