Changes in Rheological Properties of Mortars with Steel Slags and Steel Fibers by Magnetic Field

Abstract

The effect of a magnetic field on the rheology of mortars with steel slags and fibers was evaluated in this study. The rheology of the mortar measured with and without a magnetic field was compared. The effect of steel fiber addition to normal and steel slag mortars, mix ratio and size of steel fibers, and magnetic field formation position on rheology were evaluated. Steel fiber addition increased the yield stress and viscosity of the normal and steel slag mortars. The increased rheology was almost restored because of the magnetic field applied to the normal mortars. However, the increased rheology of the steel slag mortars with steel fibers was restored only upon the application of the magnetic field, whose position was continuously changed by a power relay. It is deduced that the alignment of the steel fibers by the magnetic field contributes to the rheology reduction of the mortars. However, in the case of steel slag mortar, experimental results demonstrated that steel slag, which is a ferromagnetic material, receives constant force by the magnetic field, which increases the rheology. This is evidenced by the decrease in the rheology of steel slag mortars under a continuously changing magnetic field formation position by power relay.

Experimental Study on Reinforcement of Reef Limestone by Magnetic Anchoring System

“…It has been widely used in the fields of sealing and shock absorption under various harsh conditions [20,21]. Inspired by the concept of magnetic fluid, some scholars have explored the optimization of steel fiber arrangement in steel fiber cement-based composites by electromagnetics [22][23][24]. Chen et al [25] and Xue et al [26] conducted a study where they substituted concrete aggregate with steel slag and utilized an external magnetic field to induce the deflection and motion of steel slag in order to vibrate the concrete.…”