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Tez notu: ABSTRACT The construction industry is rapidly expanding due to urbanization and a growing economy. The growing construction industry enormously increased the consumption of Ordinary Portland Cement (OPC). The rapidly growing demand for concrete production has increased environmental pollution immensely and cement solely accounts for 8% of the world's carbon dioxide emissions. So, it is a dare need to use supplementary cementitious materials (SCMs) which are less carbon dioxide emitters in replacement of cement to reduce the environmental impact and to promote sustainable construction. In this respect, this study is based on the applicability of cenosphere (CS) and waste glass powder (WGP) communally as a cement replacement of 0% - 20% with an increment level of 5% to prepare high-performance mortars. The combined effect of CS-WGP in the high-performance mortar was examined at two curing conditions (water and dry) and curing temperatures (20 0C and 80 0C). Several tests were conducted such as workability/fluidity, water absorption, compressive strength, acid attack, flexural strength, fire resistance, packing density, and drying shrinkage to evaluate the rheological, mechanical, and durability properties of CS-WGP based mortars. Results indicated that water curing at elevated temperature (80 0C) is efficient than other curing conditions and temperatures. Moreover, it was also found that the applicability of CS has increased the rheological, mechanical, and durability properties. It is concluded that a 10% replacement of CS and WGP showed appreciable results against all mentioned properties. Keywords: Environmental Pollution, Waste Glass Powder, Cenosphere, High-Performance Mortar, Sustainable Construction, Rheological, Mechanical, and Durability Properties

Tez notu: Thesis