Climate change become as one of our societies' most pressing environmental issues. Production of Portland cements is high energy intensive and is not an environmentally favorable substance due to its huge CO 2 emission from the production process. To maintain sustainable development utilization of alternative materials should be employed. So, the main objective of this study is to evaluate the suitability of scoria powder (SP) and glass and scoria composition (GPSP) as supplementary cementitious materials in order to mitigate the environmental pollution and high cost of cement resulted from the manufacturing of cement. The influence of scoria and glass-scoria powder on consistency, setting time, soundness, workability, compressive strength, sulfate attack, water absorption, and ultrasonic pulse velocity tests was investigated on cement paste and mortar mixes. In addition to that, Fourier Transform InfraRed, Thermogravimetric Analysis, and Differential Thermal Analysis were done to evaluate the micro-structure of mortar. In this study, sample mortars were tested at the ages of 3, 7, 28, 56, and 90 days on specimens containing different contents of SP (0%, 10%, 15%, 20%, and 25%) and GPSP (22.5GP-7.5SP%, 15GP-15SP, and 7.5GP-22.5SP) substituting ordinary Portland cement. The study results demonstrate that the chemical and mechanical properties of SP and GPSP meet the relevant ASTM C 618 standard; it is found that the Strength Activity Index of GPSP is greater than that of SP. This result indicates incorporation of GP with SP initiates early strength development. The additive dosage increment increased the water demand and setting time, respectively, and the addition of SP and GPSP reduced cement expansion. With an increase in SP and GPSP, mortar became less workable. The result revealed that the incorporation of 10%SP and 15%SP powder improved the compressive strength at the later ages (28, 56, and 90 days), in comparison with that of the control mix. It is found that the lower early strength of SP can be accelerated by the incorporation of GP into ternary blended cement. Further, incorporation of scoria improves the sulfate attack resistance of mortar in later days of exposure (90-day) and results found a slight increment in water absorption and UPV compared to the control mix. According to experimental results, the addition of SP up to 20% and GPSP up to 30% is recommended. Keywords, Glass powder (GP), Scoria powder (SP), Fresh Properties, Mechanical properties, Micro Structure, Durability.