Abstract
To better explore the mechanical properties of steel slag concrete (SSC) under triaxial compression, true triaxial tests were performed on SSC with three replacement ratios (30%, 70%, 100%) by a servo-controlled setup (TAWZ-5000/3000). Through the test, failure modes, peak stress, and corresponding strain of SSC are obtained. Results show that the failure modes of SSC are plate-splitting and slant-shear. Compared with the corresponding uniaxial strength, the triaxial compressive strength of SSC is significantly improved and is influenced by the stress ratio and the replacement ratio. Finally, based on unified strength theory, the strength failure criterion formula of SSC with different replacement rates under triaxial compression is given.
Highlights
Under the triaxial compression stage, the typical failure modes of steel slag concrete (SSC) are shown in Figure 4, they were failure modes of the single-splitting, slant-shear, respectively
The failure mode of SSC was significantly affected by the stress ratio
When the stress ratio σ2 /σ3 was relatively small (e.g., σ2 : σ3 = 0.25:1), the failure mode that appeared in SSC was plate-splitting
Summary
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