Grouting characteristics of cement-based materials added multitype additives considering the time-varying rheology

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 472, P. 140914 - 140914

Published: March 26, 2025

Language: Английский

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Long-term water and salt transport patterns during soil reconstruction in coal mining subsidence areas using activated coal gangue

Process Safety and Environmental Protection, Journal Year: 2025, Volume and Issue: unknown, P. 107000 - 107000

Published: March 1, 2025

Language: Английский

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Mechanical properties and damage evolution of graphene oxide enhanced coal-based solid waste grouting materials

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 472, P. 140776 - 140776

Published: March 18, 2025

Language: Английский

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Modification Mechanism of Glass Fibers on Ordinary Portland Cement and Sulphoaluminate Cement Composites

Materials, Journal Year: 2025, Volume and Issue: 18(8), P. 1785 - 1785

Published: April 14, 2025

The problems of easy cracking, high brittleness, and low bond strength ordinary Portland cement sulphoaluminate (OPC-SAC) composites limit their application as rapid repair materials. In this study, glass fibers (GFs) were added to OPC-SAC with the content 0.0–1.5% improve properties. Fluidity, mechanical properties, drying shrinkage properties researched, microstructure was characterized by SEM ICT. Hydration products at different curing ages studied XRD FTIR. results showed that GFs improved composites. 28 d flexural strength, compressive specimens 0.5% reached maximum values, increasing 22.1%, 12.1%, 82.9%, respectively, compared control group without GFs.. significantly inhibited composites, inhibitory effect magnified GFs. Adding could reduce porosity specimens, decrease volume proportion pores (>10 mm3), refine pore structure. summary, is recommended optimal be into

Language: Английский

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Performance optimization and heavy metal solidification mechanism of salt-alkali activated all-solid waste filling material

Journal of Building Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112754 - 112754

Published: April 1, 2025

Language: Английский

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Environmental resistance investigation for shield inert synchronous grouting material based on slag powder, fly ash and silica fume

European Journal of Environmental and Civil engineering, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 18

Published: Dec. 1, 2024

In this work, the shield inert synchronous grouting material were fabricated using slag powder, fly ash and silica fume as raw materials. view of inevitable influence environmental factors on materials after construction, resistance single liquid active was comparatively investigated by water absorption test, impermeability chemical corrosion test well frost test. Water confirmed that possessed hygroscopic rate 10.12%, which is lower than 11.31% counterpart 48 h immersion. The pressure high 0.93 MPa, also higher Chemical showed exhibibted better salt erosion resistance, acid alkali compared with under same conditions. Frost strength exhibited loss mass 1.64% 0.33%, 1.92% 0.62% 10 freeze-thaw cycles. phase changes at different ages X-ray diffraction (XRD), microstructure evolution scanning electron microscopy (SEM). It observed key for enhanced formation a large number cementitious crystalline substances in hydration process, effectively improved compactness internal On basis, work mechanism powder-fly ash-silica fume-based proposed.

Language: Английский

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Uniaxial Compression Behavior and Energy Evolution of Joint Rock Repaired and Reinforced with Biocementation Method

Rock Mechanics and Rock Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 19, 2024

Language: Английский

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