Abstract
This paper talked about stress-strain curve of stirrup restraint ferrous tailing concrete by test and theoretical analysis. Twenty short column of 5 strength grade are contained in the test with WC30, WC35, WC40, WC45 and WC50. And the stress-strain data was achieved after the axial compression behavior test. Through the stress-strain curve, it can be found that the stress-strain relationship is similar with natural sand concrete. At the same time, it was put forward the whole stress-strain curve equation of stirrup restraint ferrous tailing concrete. The calculation results showed that the data calculating by the eqution this paper are in good agreement with the experimental data.
Highlights
The natural sand is mainly used as fine aggregate of concrete at present
In order to obtain the stress and strain data of tailings sand concrete restrained by stirrups, specimens of WC30, WC35, WC40, WC45 and WC50 were selected in the test
It was found that the stress–strain curve of stirrup confined tailings concrete was similar to that of the ordinary concrete prepared by nature sand
Summary
The natural sand is mainly used as fine aggregate of concrete at present. Ferrous tailing sand concrete was prepared by taking tailing sand as the fine aggregate. Material properties and working performance of ferrous tailing concrete is similar to ordinary concrete prepared by nature sand. There are few studies on the properties of ferrous tailing sand short columns applied axial compression, especially the column which is made of ferrous tailing sand instead of nature sand. It is necessary to study the axial compressive behavior of concrete short columns with iron tailings, and it will promote the application of tailings concrete in engineering. The test was developed to the axial compressive behavior of concrete short columns with iron tailings, and the stress strain was analysed in this paper
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