Study on Silica Content of Peat Soil and Concrete Reinforced Aluminium AA7075 Chips by Cold Compaction Method: Hardness and Physical Properties

New combination of metal matrix-based composite can be used in the engineering industry due to its lightweight, high impact strength, and high fatigue life. The use of silica content in various engineering applications gives significant environmental and economic benefits. The hardness and physical properties by using reinforcements of peat soil and concrete reinforced aluminium AA7075 chips were investigated. The silica content of peat soil and concrete particles has been characterized by conducting x-ray fluorescence and field emission scanning electron microscopy with energy dispersive x-ray spectroscopy. The results show the constituent element in the peat soil and concrete was silicon dioxide which are 36.31 wt.% and 46.62 wt.%, respectively. The result of peat soil shows that the hardness was increased up to 7.5 wt.% of peat soil with 80.09 Hv 0.1 and then decreased with increasing in mass composition. The trends hardness for concrete reinforced chips shows that the hardness increased when the composition of concrete increase with the highest value at 12.5 wt.% with 71.34 Hv 0.1. The study of metal matrix-based composite from peat soil and concrete shows beneficial improving the properties of these composites, which were dependent to the composition of reinforcement, hence potentially used in engineering field.