20 October 2009 Improving the damping ability by the addition of Nano SiO2 to the concrete materials
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Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 74933C (2009) https://doi.org/10.1117/12.839202
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China
Abstract
Damping in structures is commonly provided by viscoelastic nonstructural materials. Due to the large volume of structural materials in a structure, the contribution of a structural material to damping can be substantial. In this paper, the experimental investigation on damping ability of concrete materials and its members with Nana SiO2 was carried out by the method of 3-point bending beam damping measurement and cantilever beam free vibration respectively. The microstructure of concrete mix with Nano SiO2 was observed by XRD and SEM, then damping mechanism was discussed. The experimental results show that the damping reinforced effect achieved best with the 4% mixture ratio of Nana SiO2, but the optimal adulteration quantity of Nano SiO2 was 3% of cement weight by the comprehensive consideration of cost, workability, strength and dynamic properties. Nano materials as a mixture increase interfaces, and the non-uniform stress distribution under external force improves frictional damping energy consumption ability of concrete. The experimental results on the damping ratio and the loss tangent of the concrete materials with Nano materials are consistent.
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Dujian Zou, Dujian Zou, Tiejun Liu, Tiejun Liu, Jun Teng, Jun Teng, } "Improving the damping ability by the addition of Nano SiO2 to the concrete materials", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74933C (20 October 2009); doi: 10.1117/12.839202; https://doi.org/10.1117/12.839202
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