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Asadizadeh, M., Hedayat, A., Tunstall, L., Vega Gonzalez, J.A, Vera Alvarado, J.W., Taboada Neira, M. (2024). The impact of slag on the process of geopolymerization and the mechanical performance of mine-tailings-based alkali-activated lightweight aggregates. Construction and Building Materials, 395, 132275. Link
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Zhang, N., Hedayat, A., Figueroa, L., Steirer, X., Li, L., Sosa, H.G.B. (2023). Physical, mechanical, cracking, and damage properties of mine tailings-based geopolymer: Experimental and numerical investigations. Journal of Building Engineering, 75, 107075. Link
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Asadizadeh, M., Clements, C., Hedayat, A., Tunstall, L., Vega Gonzalez, J.A, Vera Alvarado, J.W., Taboada Neira, M. (2023). The effect of class F fly ash on the geopolymerization and compressive strength of lightweight aggregates made from alkali-activated mine tailings. Construction and Building Materials, 395, 132275. Link
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Perera-Mercado, Y., Zhang, N., Hedayat, A., Figueroa, L., Saucedo-Salazar, E., Clements, C., Sosa, H.G.B., Tupa, N., Morales, I.Y., Canahua Loza, R.S. (2023). Production and Incorporation of Calcium-Hydrolyzed Nanoparticles in Alkali-Activated Mine Tailings. Nanomaterials, 13(12), 1875. Link
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Butt, A., Hedayat, A., Moradian, O. (2023). Laboratory investigation of hydraulic fracturing in granitic rocks using active and passive seismic monitoring. Geophysical Journal International, 234 (3), 1752-1770. Link
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Li, H., Gheibi, A., Hedayat, A., Yin, J., Deng, J. (2023). Experimental validation of a velocity discontinuity model for prediction of the seismic and static shear stiffness of rock joints. International Journal of Rock Mechanics and Mining Sciences, 165, 105360. Link
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Garg, P., Zafar, S., Hedayat, A., Moradian, O., Griffiths, D.V. (2023). A novel methodology for characterizing fracture process zone evolution in Barre granite specimens under mode I loading. Theoretical and Applied Fracture Mechanics, 123, 103727. Link
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Zhang, N., Hedayat, A., Perera-Mercado, H. G. B., Tupa, N., Morales, I. Y., Loza, R. S. C. (2022). Including Class F Fly Ash to Improve the Geopolymerization Effects and the Compressive Strength of Mine Tailings–Based Geopolymer. Journal of Materials in Civil Engineering, 34(11), 04022313. Link
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Zhang, N., Hedayat, A., Han, S., Ma, S., Sosa, H. G. B., Bernal, R.P.H., Tupa, N., Morales, I.Y., Loza, R. S. C. (2022). Fracture properties of tailings-based geopolymer incorporated with class F fly ash under mode I loading conditions. Engineering Fracture Mechanics, 271, 108646. Link
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Zhang, N., Hedayat, A., Figueroa, L., Steirer, K.X., Li, H., Sosa, H. G. B., Bernal, R.P.H., Tupa, N., Morales, I.Y., Loza, R. S. C. (2022). Experimental studies on the durability and leaching properties of alkali-activated tailings subjected to different environmental conditions. Cement and Concrete Composites, 130, 104531. Link
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Perera-Mercado, Y., Hedayat, A., Tunstall, L., Clements, C., Hylton, J., Figueroa, L., Zhang, N., Sosa, H. G. B., Tupa, N., Morales, I.Y., Loza, R. S. C. (2022). Effect of the Class C Fly Ash on Low-Reactive Gold Mine Tailing Geopolymers. Polymers, 14, 2809. Link
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Zafar, S., Hedayat, A., Moradian, O. (2022). Micromechanics of Fracture Propagation During Multistage Stress Relaxation and Creep in Brittle Rocks. Rock Mechanics and Rock Engineering, 55, 7611–7627. Link
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Zafar, S., Hedayat, A., Moradian, O. (2022). Evolution of Tensile and Shear Cracking in Crystalline Rocks Under Compression. Theoretical and Applied Fracture Mechanics, 118, 103254. Link
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Arora, K., Gutierrez, M., and Hedayat, A. (2021). New Physical Model to Study Tunnels in Squeezing Clay-Rich Rocks. Geotechnical Testing Journal, 6(4), 433-445. Link
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Shirole, D., Hedayat, A., Walton, G. (2021). Damage monitoring in rock specimens with pre-existing flaws by non-linear ultrasonic waves and digital image correlation. International Journal of Rock Mechanics and Mining Sciences, 142, 104758. Link
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Gheibi, A., Li, H., and Hedayat, A. (2021). Detection of seismic precursors in converted ultrasonic waves to shear failure of natural sandstone rock joints. Rock Mechanics and Rock Engineering, 54, 3611-3627. Link
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Zhang, N., Hedayat, A., Sosa, H. G. B., Cárdenas, J. J. G., Álvarez, G. E. S., and Rivera, V. B. A. (2021). Specimen size effects on the mechanical behaviors and failure patterns of the mine tailings-based geopolymer under uniaxial compression. Construction and Building Materials, 281, 122525. Link
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Zhang, N., Hedayat, A., Sosa, H., Tunnah, J., Cárdenas, J., and Álvarez, G. E. S. (2021). Estimation of the mode I fracture toughness and evaluations on the strain behaviors of the compacted mine tailings from full-field displacement fields via digital image correlation. Theoretical and Applied Fracture Mechanics, 114, 103014. Link
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Zhang, N., Hedayat, A., Sosa, H. G. B., Tupa, N., Morales, I. Y., and Loza, R. S. C. (2021). Mechanical and fracture behaviors of compacted gold mine tailings by semi-circular bending tests and digital image correlation. Construction and Building Materials. Link
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Zhang, N., Hedayat, A., Sosa, H. G. B., Bernel, R.P.H., Tupa, N., Morales, I. Y., and Loza, R. S. C. (2021). Fracture properties of the gold mine tailings-based geopolymer under mode I loading condition through semi-circular bend tests with digital image correlation. Theoretical and Applied Fracture Mechanics. Link
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Arora, K., Gutierrez, M., Hedayat, A. (2021). Physical model simulation of rock-support interaction for the tunnel in squeezing ground. Journal of Rock Mechanics and Geotechnical Engineering. Link
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Zhang, N., Hedayat, A., Sosa, H.G.B., Tupa, N., Morales, I.Y., Loza, R.S.C. (2021). Crack evolution in the Brazilian disks of the mine tailings-based geopolymers measured from digital image correlations: An experimental investigation considering the effects of class F fly ash additions. Ceramics International, 47(22), 32382-32396. Link
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Zhang, N., Hedayat, A., Sosa, H.G.B., Bernal, R.P.H., Tupa, N., Morales, I.Y., Loza, R.S.C. (2021). On the incorporation of class F fly-ash to enhance the geopolymerization effects and splitting tensile strength of the gold mine tailings-based geopolymer. Construction and Building Materials, 308, 125112. Link
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Arora, K., Gutierrez, M., Hedayat, A., Cruz, E.C. (2021). Time-Dependent Behavior of the Tunnels in Squeezing Ground: An Experimental Study. Rock Mechanics and Rock Engineering 54 (4), 1755-1777. Link
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Zhang, N., Hedayat, A., Gelber Bolaños Sosa, H., González Cárdenas, J.J., Ascuña Rivera, V.B. (2020). Damage evaluation and deformation behavior of mine tailing-based Geopolymer under uniaxial cyclic compression. Ceramics International. Link
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Gheibi, A., and Hedayat, A. (2020). Ultrasonic imaging microscale processes in quartz gouge during compression and shear. Journal of Rock Mechanics and Geotechnical Engineering. Link
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Shirole, D., Walton, G., and Hedayat, A. (2020). Experimental investigation of multi-scale strain-field heterogeneity in rocks. International Journal of Rock Mechanics and Mining Sciences 127, 104212. Link
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Shirole, D., Hedayat, A., and Walton, G. Illumination of damage in intact rock specimens by ultrasonic wave transmission and reflection. Journal of Geophysical Research-Solid Earth, 125(7), e2020JB019526. Link
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Shirole, D., Hedayat, A., Ghazanfari, E., and Walton, G. (2020). Evaluation of an ultrasonic method for damage characterization of brittle rocks. Rock Mechanics and Rock Engineering. Link