| dc.description.abstract | Concrete systems using alkali-activated binders show promise and provide the advantages of reduced
carbon emissions and resource recovery. The viability of employing waste materials as precursors for
the synthesis of aluminosilicates binders using alkali activators has been confirmed by numerous
research. However, research findings differ from one circumstance to another due to variations in the
physical and chemical properties of the waste material.
This assignment was carried out to investigate the effects of binary blending the precursor
Silicomanganese Slag with the other four precursors namely Granite, Silica Flour, Ground Granulated
Blast Furnace Slag, and Micro Silica using the one-part mixing methods as one of the main objective
towards contributing to this target. The blends consist of retaining SiMn Slag at levels of 100%, 90%,
70%, and 50%, i.e., the other precursors are substituted for SiMn Slag at 0%, 10%, 30%, and 50%,
respectively.
In order to accomplish this goal, laboratory testing was done, and Ultimate Compressive Strength at 7-
days and 28-days was measured and assessed.
Due to their relatively high CaO contents, the data obtained demonstrate that SiMn Slag, GGBFS, and
their blend (90%–10% composition) are among the precursors with the highest UCS at 7-days. Due to
the fineness of its particles, blending with the precursor Micro Silica (90%–10%) also produced the
highest UCS at 7-days. Micro Silica, on the other hand, displayed the least UCS due to its high Si/Al
Molar ratio (very little Al2O3 concentration), whereas SiMn Slag and their blending with GGBFS
remained to show high UCS at 28-days due to their optimal level of Si/Al Molar ratio.
Precursors with coarser particles (Granite and GGBFS) had superior workability than Micro Silica,
which demonstrated the least workability because of its finer particles. | |