Effect of Cement Clinker on the Properties of Flue Gas Desulphurization Gypsum-Steel Slag Cementitious Composites

Abstract

The effects of cement clinker on the properties of flue gas desulphurization gypsum-based steel slag composites were analyzed in this article and the influence rules of setting time, final setting time, flexural strength and compressive strength of cementitious composites were also discussed. The micro-morphology of the composite was observed by scanning electron microscope. At the same time, the excitation mechanism of cement clinker on gas desulphurization gypsum-based steel slag was put forward. It was demonstrated that cement clinker with content of 2% in the composites can better stimulate the activation of steel slag and improve the mechanical properties of the composites.

Nonsintered lightweight aggregates produced from waste sludge and its characteristics affected by additives

“…As shown in Figure , the internal structure of LWA with different MSWI‐BAS content is relatively dense, because MSWI‐BAS can continuously undergo hydration reaction in alkaline environment containing Al 3+ . The hydration product coated on the surface of the skeleton component reduces the porosity of the material, makes the material structure dense, and improves the mechanical properties of the material . Gel‐like substances are attached between the large‐grain tissues with 62% MSWI‐BAS, which is C‐S‐H corresponding to Figure 2b.…”