Papers by Author: Yu Bin Wang

Abstract: With the purpose that the desulphurized and skimming slag tailings powder from Ansteel replaces part of cement, water requirement of normal consistency, soundness, setting time and strength of cement with desulphurized and skimmed slag tailings was researched respectively in this paper. Results demonstrated that both of the compressive strength and the rupture strength of cement mortar of 3 and 28 concrete age decreased gradually with the amount of tailings increase, and what resulted in strenghth decreased was also investigated, It was shown that suitable amount of tailings to be blended was limited to 30 wt.%.

Abstract: Surface modification was conducted on the basic magnesium sulfate whiskers (MSW) using sodium stearate. The modification performance was evaluated by comparing the activation index, oil absorption value, rest angle, and dispersibility in polypropylene (PP) resin prior to and after treatment. It was found that the surface properties of the whiskers were improved by sodium stearate modification. In particular, the improvement in the dispersibility in PP was significant. Surface characterization was conducted using scanning electron microscopy (SEM), thermogravimetric-differential scanning calorimetry (TG-DSC) and fourier transform infrared spectroscopy (FTIR) for the raw and modified whiskers. The results indicated the co-existence of both chemical and physical adsorptions of sodium stearate on the surfaces of MSW.