KCl Extracted from Chlorine Bypass Dust as Activator for Plain Concrete

Abstract

This study demonstrated the use of KCl separated from chlorine bypass dust (CBD) as an activator for plain concrete. The separated KCl was mixed with either ground granulated blast-furnace slag (BFS) alone, or a mixture of BFS and cement. The mixed paste of separated KCl and BFS set within 24 h, and exhibited a compressive strength of 22.6 MPa after 28 d. The separated KCl, cement, and BFS mixture exhibited a more rapid setting and a higher initial activity. Further, the compressive strength at 28 d was 57.7 MPa, which was 26.2% higher than that of the mixture without the activator. Water curing of samples with added separated KCl led to the generation of hydrocalumite, or Friedel’s salt. However, this hydrocalumite was decomposed while being cured under autoclave conditions at 180 °C. Overall, KCl was an effective activator for composite materials containing cement, and resulted in superior properties compared to mineral admixtures without an activator.

Electrorheological Response Behavior of PANI@MoS2 Core–Shell Nanocomposites

“…[14] Choi's team produced an ER material with shear stress more than 100 Pa by using Fe 3 O 4 /poly(o-anisidine) (POA) core/shell composite material as dispersion phase. [15] Polymer material is also a kind of excellent electrorheological material, which has polar groups on its molecular chain so that it exhibits high polarizability. This material has high molecular weight, electric density, and controllability.…”