Concrete   materials are mostly used in Building Construction and the high cost of construction materials has been a source of concern over the years in the building construction industry. In recent years innovative cementitious materials that can be used as an alternative for ordinary Portland cement are locally sourced to reduce the high cost of cement in concrete production. This study investigates the compressive strength of concrete produced with shear nutshell ash and guinea corn husk ash as a partial replacement of Portland cement should be used in the production of concrete under the above conditions. Replacement for cement in concrete production tested using aggressive chemicals such as Hydrogen Sulphate(H2SO4) and Magnesium Sulphate (MgSO4). The effectiveness of the two materials were examined as binary and ternary blended cement in concrete. The sample of the concrete cubes were cured in both normal and aggressive environments. The percentage replacement was at 2%, 4%, and 6% respectively. The aging period was at 28, 56, and 90days.The results shows that   SNA/OPC shows good initial compressive strength, particularly in the early stages. However, under aggressive conditions like MgSO4 and H2SO4, the strength tends to stabilize or slightly decrease over time