Amirkabir University of Technology Amirkabir Journal of Civil Engineering 2588-297X 54 12 2023 02 20 Experimental study of stabilization of natural soil with geopolymer based on glass powder and calcium carbide Experimental study of stabilization of natural soil with geopolymer based on glass powder and calcium carbide 4827 4846 4928 10.22060/ceej.2022.21630.7781 FA Seyyed Erfan Hosseini Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran 0000-0002-7100-766X Alireza Tabarsa Department of Civil Engineering, Faculty of Engineering, Golestan University, Golestan, Iran 0000-0001-5475-122X Amin Bahmanpour Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran 0000-0002-7107-7369 Journal Article 2022 07 27 Considering cement environmental sustainability issues, an experimental comparative study on three series of untreated silty sandy soil, cement-stabilized, and geopolymer-stabilized soil mixtures based on glass powder, in terms of their static and dynamic properties are presented. Results showed that the optimal geopolymer combination ratios from the viewpoint of bearing the maximum compression, was obtained composed of 15% glass powder, 7% calcium carbide, and 25% silt, and concentrations of higher/lower of the optimum value, will be reduced the compressive strength. Dynamic shear modulus of soil-geopolymer was higher than soil-cement, while it was the reverse in terms of damping ratio. Shear strength, stiffness and damping ratio of the soils with various fines content increases up to fines threshold (50% silt). optimal values of soil static and dynamic properties were found in 25% and 50% silt, respectively. Considering cement environmental sustainability issues, an experimental comparative study on three series of untreated silty sandy soil, cement-stabilized, and geopolymer-stabilized soil mixtures based on glass powder, in terms of their static and dynamic properties are presented. Results showed that the optimal geopolymer combination ratios from the viewpoint of bearing the maximum compression, was obtained composed of 15% glass powder, 7% calcium carbide, and 25% silt, and concentrations of higher/lower of the optimum value, will be reduced the compressive strength. Dynamic shear modulus of soil-geopolymer was higher than soil-cement, while it was the reverse in terms of damping ratio. Shear strength, stiffness and damping ratio of the soils with various fines content increases up to fines threshold (50% silt). optimal values of soil static and dynamic properties were found in 25% and 50% silt, respectively. https://ceej.aut.ac.ir/article_4928_6e616e79d491ba42638558caf0364003.pdf