Hydro-mechanical coupling characteristics and mechanism of salt intrusion freeze-thaw concrete under complex stress paths

Journal of Building Engineering, Год журнала: 2025, Номер 102, С. 111994 - 111994

Опубликована: Фев. 1, 2025

Язык: Английский

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Mechanical response characteristics and seepage evolution mechanism of shaft lining concrete under different stress states

Construction and Building Materials, Год журнала: 2025, Номер 474, С. 141109 - 141109

Опубликована: Апрель 9, 2025

Язык: Английский

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Role of porous aggregate types on the sulfate attack resistance of cement mortar

Construction and Building Materials, Год журнала: 2025, Номер 483, С. 141781 - 141781

Опубликована: Май 14, 2025

Язык: Английский

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Influence of Polypropylene Fiber on Concrete Permeability under Freeze-Thaw Conditions and Mechanical Loading

Materials, Год журнала: 2024, Номер 17(12), С. 2945 - 2945

Опубликована: Июнь 15, 2024

Polypropylene fiber reinforcement is an effective method to enhance the durability of concrete structures. With increasing public interest in widespread use polypropylene reinforced (PFRC), necessity evaluating mechanism (PF) on permeability has become prominent. This paper describes influence PF exposed freeze-thaw cycles under compressive and tensile stress. The PFRC loads accurately measured by a specialized setup. loads, volume change load, relationship between stress levels at minimum points are discussed. results indicate that addition adversely affects without damage cracks. However, it decreases specimens cracking. Under initially slowly follows significant increase as level increases. phenomenon correlates with specimen. point exhibit linear correlation, fitted proportional function parameter γ ≈ 0.98872. increases gradually radial deformation increase. strain-permeability curves loading studied consist two stages. In stage I, strain while load. II, cycles, whereas cycles. reduction load greater than future research, can be integrated its constitutive provide reference for application waterproofing

Язык: Английский

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Effect of sulfate freeze-thaw on the stress-strain relationship of recycled coarse aggregate self-compacting concrete: Experimental and machine learning algorithms

Construction and Building Materials, Год журнала: 2024, Номер 449, С. 138383 - 138383

Опубликована: Сен. 19, 2024

Язык: Английский

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Study on the Durability of High-Content Oil Shale Concrete

Buildings, Год журнала: 2024, Номер 14(8), С. 2547 - 2547

Опубликована: Авг. 19, 2024

This study evaluated the potential and environmental benefits of using oil shale residue as a replacement for fine aggregate in concrete through series experiments. Initially, crushing value test confirmed residue’s at 16.7%, meeting load-bearing standards aggregates, thus proving its viability complete substitute. Further, was treated with 60 mg/L concentration Tween 80 other surfactants removal. The specimens demonstrated excellent compressive performance dense internal structure. Building on this, mechanical properties were explored across different ratios (from 40% to 100%), revealing an increase strength higher ratios. In durability tests, compared JZ group, modified desulfurization gypsum exhibited 0.03% reduction mass loss rate 10.13% relative moving elasticity modulus rate, particularly noticeable after 175 freeze–thaw cycles where B1 B4 no significant damage, highlighting remarkable durability. Overall analysis indicated that oil-removed substitute concrete, combined modification, not only enhances but also significantly reduces consumption natural aggregates pollution, promoting resource utilization sustainable development.

Язык: Английский

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Investigation on performance degradation analysis method of offshore concrete structures under freeze–thaw and sulfate attack

Ocean Engineering, Год журнала: 2024, Номер 316, С. 119935 - 119935

Опубликована: Дек. 6, 2024

Язык: Английский

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Study on the Weathering Characteristics of a Solitary Rock in Chishui Based on Pore Structure with Depth

Geotechnical and Geological Engineering, Год журнала: 2024, Номер 42(6), С. 4953 - 4966

Опубликована: Май 29, 2024

Язык: Английский

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Complex salt frost resistance of pre-damaged reinforced HPC columns wrapped with BFRP sheets

Archives of Civil and Mechanical Engineering, Год журнала: 2024, Номер 25(1)

Опубликована: Ноя. 19, 2024

Язык: Английский

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Damage evolution and avalanche characteristics of concrete under salt-freezing action by acoustic emission

Developments in the Built Environment, Год журнала: 2024, Номер unknown, С. 100600 - 100600

Опубликована: Дек. 1, 2024

Язык: Английский

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