Amirkabir University of Technology Amirkabir Journal of Civil Engineering 2588-297X 50 6 2019 02 20 Experimental Study of Workability and Mechanical Properties of Concrete Containing Powder Glass and Mineral Waste Glass with Separate and Simultaneous Applications Experimental Study of Workability and Mechanical Properties of Concrete Containing Powder Glass and Mineral Waste Glass with Separate and Simultaneous Applications 1155 1176 2806 10.22060/ceej.2018.13416.5404 FA S. F. Sajedi Department of Civil Engineering, Ahvaz Branch, IAU, Ahvaz, Iran 0000-0003-3933-2793 F. Darash Department of Civil Engineering, Ahvaz Branch, IAU, Ahvaz, Iran Journal Article 2017 09 12 The large volume of unrecoverable waste glass has recently been considered as an alternative to some concrete components. In the previous studies, the replacement of sand with crumb glass at high ratios resulted in a significant reduction in the mechanical properties of concrete. In this research, the sand was replaced with waste fractures with ratios of 5%, 8% and 12%, and 3 mixing designs were cast. Three mixes were also made by replacing glass powder with cement at 4%, 8% and 12%. Combined designs with a constant replacement of 8% glass crumbs with sand and cement with glass powder in ratios of 4%, 8% and 12% were also prepared. A total of 230 sampling was done. The compressive strength of samples at the age of 7, 28, 56 and 91 days, and tensile strength at 28 days were also measured. Static modulus test was performed on cylindrical specimens. Experiments results in fresh and hardened concretes compounds decreased compared to mixed glass containing glass powder, which is indicative of the undesirable use of glass as a crumbly and increased alkali-silica activity. The undesirable performance of glass jar on the mechanical properties of concrete through the replacement of cement with glass powder has been greatly improved. The results showed that simultaneous replacement of cement with glass powder in low proportions in designs containing 8% permanent sand replacement with glass jar, resulted in a significant reduction in the workability and improvement of mechanical properties of concrete compared to the reference design. The large volume of unrecoverable waste glass has recently been considered as an alternative to some concrete components. In the previous studies, the replacement of sand with crumb glass at high ratios resulted in a significant reduction in the mechanical properties of concrete. In this research, the sand was replaced with waste fractures with ratios of 5%, 8% and 12%, and 3 mixing designs were cast. Three mixes were also made by replacing glass powder with cement at 4%, 8% and 12%. Combined designs with a constant replacement of 8% glass crumbs with sand and cement with glass powder in ratios of 4%, 8% and 12% were also prepared. A total of 230 sampling was done. The compressive strength of samples at the age of 7, 28, 56 and 91 days, and tensile strength at 28 days were also measured. Static modulus test was performed on cylindrical specimens. Experiments results in fresh and hardened concretes compounds decreased compared to mixed glass containing glass powder, which is indicative of the undesirable use of glass as a crumbly and increased alkali-silica activity. The undesirable performance of glass jar on the mechanical properties of concrete through the replacement of cement with glass powder has been greatly improved. The results showed that simultaneous replacement of cement with glass powder in low proportions in designs containing 8% permanent sand replacement with glass jar, resulted in a significant reduction in the workability and improvement of mechanical properties of concrete compared to the reference design. https://ceej.aut.ac.ir/article_2806_c0f971d8cd24364f2029fcb9ac7b71f5.pdf