###### Abstract  
The need to get rid of solid waste in the environment necessitates the incorporation of waste glass powder (WGP) in mortar and concrete. The blending of WGP (G) with ordinary Portland cement (OPC) is a valorization technique that is not only cost efficient but also environmentally friendly. The replacement level is denoted as C\({}_{3}\)G\({}_{10\times 4}\), where x is 0-20 wt.% at an interval of 5 wt.% in mortar (w/b = 0.4) and 0, 10, 20 and 30 in concrete (w/b = 0.42). The study investigates the effects of glass on the setting, workability, thermal resistance, microstructure, mineral phases and bond characteristics of silicon and hydroxyl-based compounds and C-O vibrations. It also provides the model equations for strength characteristics in terms of OPC, G and ages in mortar and concrete on one hand and investigates the residual strength and density of glass blended concrete at elevated temperature (550 \({}^{\circ}\)C) on the other. It is found that glass enhances the workability, reduces the setting time and density and enhances the residual strength and density of concrete. The presence of glass leads to the formation of coesite and microstructural distortion and decreases the Ca/Si ratio. Besides, the bond characteristics of the binder are significantly affected, while the thermal residual strength capacity in glass blended concrete (C\({}_{80}\)G\({}_{20}\)) is 40.4% and 75.14% lower than that in OPC concrete (C\({}_{100}\)G\({}_{0}\)) because of the low thermal conduction of glass particles. The optimum glass content in mortar and concrete to produce 33 MPa (28 days) and 47 MPa (90 days) is found to be 10 wt.% and 20 wt.%, respectively. glass waste powder; cement; density; microstructure; consistency; compressive strength 4.0.0.0000-0000-0000-0000-0000-0000-0000-0000-0000-0000-0000-0000-0000-00000-0000-00000-00000-00000-00000-00000-00000-00000-000000-00000-000000-000000-000000-0000000-000000000000000000000000000  
Institute (GPI), estimating recyclable glass to total 3.1 million tons at a recyclable rate of 31.3% [2], In Australia, the annual amount of recyclable glass totals 1 million tons [3,4]. [PERSON] et al. [5] reported the advantages of using waste glass powder as a replacement of the cementitious material on the properties of the architectural cement mortars. The waste glass powder controls the workability and hydration reaction and increases the flexural strength of cement. It also performs the role of microfilling within the pores, with an improvement in the strength at curing period of 90 days. The size of glass waste has been reported to play a significant role on the glass pozzolanic reactivity [6]. [PERSON] et al. [6] asserted that a size of 20-44 microns has better pozzolanic reactivity than 5-20 microns and 74-150 microns, while thermogravimetric and differential scanning calorimetric analysis (TGA/DSC) showed the depletion of portlandite in favor of CSH gel formation. [PERSON] et al. [6] reported that the optimum replacement level of glass waste in mortar is in the range between 10% and 20%, respectively. [PERSON] et al. [7] observed that borosilicate glass waste does not significantly contribute to the consistency of mortar and added that glass less than 10 wt.% can be incorporated without adversely affecting the strength performance of the mixture. To achieve better durability performance, finer glass at 20%wt replacement was recommended in mortar [8]. The microstructure analysis showed well distributed spherical particles within the cement matrix, with consequently less density in comparison with cement/blast furnace slag precursor (up to 26%) due to the presence of an internal bubble system that accompanies its spherical shape. [PERSON] et al. [9] also studied the performance of glass powder in OPC and alkaline activated slag binder. A reduction in expansion and the prevention of shrinkage in the mortar were reported among the advantages of glass incorporation.