A study on the damping ratio of rubber air entraining concrete

George C. Yao, Ching Yao Lin

研究成果: Article同行評審

摘要

The yield rate of hi-tech factories may decrease due to the excessive vibration of machinery and pipelines transferred through RC floors to the foundations of precision tools. To solve this problem and ensure the regular operation of precision tools, this study presents an experimental study of the damping ratio and related mechanical properties of rubber and air entraining concrete, which is made by partially replacing fine aggregate in concrete with #40 rubber powder and addition of air entraining agent. The effect of the mixing ratio on the mechanical properties, such as the compression strength and Young's modulus, of concrete cylinders with different rubber admixtures and air entraining agent is discussed. The results of impulse experiments to determine the damping ratios of cantilever beams made of the rubber air entraining concrete are presented. The experimental results reveal that when the concrete specimens are aged 24 weeks, mixture of rubber replacement ratio 2.0% and air entraining agent ratio 13.0% produced a 177% increase in theirs damping ratios.

原文English
頁(從 - 到)15-24
頁數10
期刊Journal of the Chinese Institute of Civil and Hydraulic Engineering
24
發行號1
出版狀態Published - 2012 三月 1

All Science Journal Classification (ASJC) codes

  • 土木與結構工程

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