Experimental Study on Stiffness and Energy of Modified Recycled Columns with Silica Fume and Hybrid Fiber

Abstract:

For the sake of compensating the defect of recycled aggregate and making full utilization of the mineral admixture’s unique characteristics, six recycled concrete columns with silica fume and hybrid fiber were tested under cyclic loading, the main variable of which was the different content of silica fume and fiber. Through the comparison of experimental phenomena analysis, the general rules of coefficient stiffness and energy dissipation capacities were obtained, and the corresponding theories could be analyzed with the experimental data. The results showed that the silica fume decreased early regeneration concrete column stiffness, the fiber of which increased, both the attenuation speeded increasingly with the increase in volume. Before the peak load, the energy consumption increased along with the lateral displacement’s increase, but after, the addition of fibers could make energy consumption increasing amplitude, which was better than silica fume.

• Periodical: Advanced Materials Research (Volumes 1092-1093)
• Pages: 578-582
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1092-1093.578
• Online since: March 2015
• Authors: Tao Li*
• Keywords: Coefficient Stiffness, Energy Dissipation Capacities, Hybrid Fiber, Recycled Concrete Columns, Silica Fume

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