We present the articles of the first issue of scientific journal "Mining Science and Technology” (Russia) for 2025:
Scientists conducted laboratory tests according to the International Society for Rock Mechanics (ISRM) methodology to investigate fracture toughness at interfaces between gypsum stone and sand-cement mortar. The fracture toughness coefficient K_IC was determined using cylindrical specimens 40 mm in diameter and 150 mm long with a V-shaped notch, tested in three-point bending. Results showed that the average KIC value for the rock-concrete interface was only 0.323 MPa×√m – 4 times lower than for pure gypsum (1.327 MPa×√m) and 2.5 times lower than for concrete specimens (0.858 MPa×√m). Interestingly, the formation of a calibrated fracture during testing caused a 30% increase in the internal mechanical loss factor Q⁻¹, revealing new possibilities for fracture toughness evaluation using resonance methods. These findings have important practical implications for the design, operation and monitoring of industrial mining facilities containing rock-concrete interfaces.
For more information, see the article:
📌 Voznesenskii А.S., Ushakov E.I., Kutkin Ya.O. Fracture toughness of rock-concrete interfaces and its prediction based on acoustic properties. Mining Science and Technology (Russia). 2025;10(1):5-14. https://doi.org/10.17073/2500-0632-2024-10-316
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#InEnglish #MST #rocks #concrete #gypsum #flintstone #interface #properties #fracturetoughness #acoustics #study #testing #acousticmeasurements #elasticwaves #velocity #losses #prediction #strain #rockmechanics #geophysics #ISRM #KIC #Qfactor #monitoring #strength #failure #cement #science #technology #RSFgrant #nondestructivetesting #resonancemethod #mining #engineeringsolutions
Scientists conducted laboratory tests according to the International Society for Rock Mechanics (ISRM) methodology to investigate fracture toughness at interfaces between gypsum stone and sand-cement mortar. The fracture toughness coefficient K_IC was determined using cylindrical specimens 40 mm in diameter and 150 mm long with a V-shaped notch, tested in three-point bending. Results showed that the average KIC value for the rock-concrete interface was only 0.323 MPa×√m – 4 times lower than for pure gypsum (1.327 MPa×√m) and 2.5 times lower than for concrete specimens (0.858 MPa×√m). Interestingly, the formation of a calibrated fracture during testing caused a 30% increase in the internal mechanical loss factor Q⁻¹, revealing new possibilities for fracture toughness evaluation using resonance methods. These findings have important practical implications for the design, operation and monitoring of industrial mining facilities containing rock-concrete interfaces.
For more information, see the article:
📌 Voznesenskii А.S., Ushakov E.I., Kutkin Ya.O. Fracture toughness of rock-concrete interfaces and its prediction based on acoustic properties. Mining Science and Technology (Russia). 2025;10(1):5-14. https://doi.org/10.17073/2500-0632-2024-10-316
Subscribe to our Telegram channel:
👉 t.iss.one/MinSciTech 👈
#InEnglish #MST #rocks #concrete #gypsum #flintstone #interface #properties #fracturetoughness #acoustics #study #testing #acousticmeasurements #elasticwaves #velocity #losses #prediction #strain #rockmechanics #geophysics #ISRM #KIC #Qfactor #monitoring #strength #failure #cement #science #technology #RSFgrant #nondestructivetesting #resonancemethod #mining #engineeringsolutions
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We present the articles of the first issue of scientific journal "Mining Science and Technology” (Russia) for 2025:
Scientists investigated a novel method for reinforcing sandy soils using polyurethane compounds. During construction of engineering structures and mineral deposit development, strengthening loose rock formations often becomes necessary, yet conventional polymer reinforcement techniques provide insufficient strength. Experimental studies introduced a two-solution treatment technology: initial mixing of sand with a slow-reacting highly elastic compound followed by addition of 5% rapid-curing single-component resin. Triaxial compression tests demonstrated that this approach creates cured polymer aggregates that bind mineral grains without complete void filling, increasing sand strength by 5-fold. The resulting geomaterial exhibits superior deformation resistance under axial stress, while maintaining strength independence from rapid-curing additives when the resin-to-rock volume ratio exceeds 0.3. The research confirms that the dual-solution method significantly enhances soil stability even with minimal polymer consumption, offering important practical applications for construction and mining operations.
For more information, see the article:
📌 Shilova T.V., Serdyukov S.V., Drobchik A.N. Experimental research of stress-strain properties of sandy soil when strengthened with polyurethane compounds. Mining Science and Technology (Russia). 2025;10(1):15-24. https://doi.org/10.17073/2500-0632-2024-08-303
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#InEnglish #MST #soil #sand #properties #strength #strengthening #technology #treatment #polyurethane #resin #geomaterial #testing #triaxial #compression #failure #strain #geotech #engineering #construction #polymer #stabilization #research #experiment #materialscience #groundimprovement #geomechanics #durability #elasticity #SEM #microstructure #geotechnical #civilengineering
Scientists investigated a novel method for reinforcing sandy soils using polyurethane compounds. During construction of engineering structures and mineral deposit development, strengthening loose rock formations often becomes necessary, yet conventional polymer reinforcement techniques provide insufficient strength. Experimental studies introduced a two-solution treatment technology: initial mixing of sand with a slow-reacting highly elastic compound followed by addition of 5% rapid-curing single-component resin. Triaxial compression tests demonstrated that this approach creates cured polymer aggregates that bind mineral grains without complete void filling, increasing sand strength by 5-fold. The resulting geomaterial exhibits superior deformation resistance under axial stress, while maintaining strength independence from rapid-curing additives when the resin-to-rock volume ratio exceeds 0.3. The research confirms that the dual-solution method significantly enhances soil stability even with minimal polymer consumption, offering important practical applications for construction and mining operations.
For more information, see the article:
📌 Shilova T.V., Serdyukov S.V., Drobchik A.N. Experimental research of stress-strain properties of sandy soil when strengthened with polyurethane compounds. Mining Science and Technology (Russia). 2025;10(1):15-24. https://doi.org/10.17073/2500-0632-2024-08-303
Subscribe to our Telegram channel:
👉 t.iss.one/MinSciTech 👈
#InEnglish #MST #soil #sand #properties #strength #strengthening #technology #treatment #polyurethane #resin #geomaterial #testing #triaxial #compression #failure #strain #geotech #engineering #construction #polymer #stabilization #research #experiment #materialscience #groundimprovement #geomechanics #durability #elasticity #SEM #microstructure #geotechnical #civilengineering
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