Mechanical and thermal properties of recycled coarse aggregate concrete incorporating microencapsulated phase change materials and recycled tire rubber granules and its freeze-thaw resistance

Journal of Building Engineering, Год журнала: 2025, Номер unknown, С. 111821 - 111821

Опубликована: Янв. 1, 2025

Язык: Английский

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Mitigating freeze-thaw deterioration of pavement concrete under multi-field coupling by superabsorbent polymers

Construction and Building Materials, Год журнала: 2024, Номер 414, С. 134726 - 134726

Опубликована: Янв. 21, 2024

Язык: Английский

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Analysis and prediction of freeze-thaw resistance of concrete based on machine learning

Materials Today Communications, Год журнала: 2024, Номер 39, С. 108946 - 108946

Опубликована: Апрель 16, 2024

Язык: Английский

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Mitigating freeze–thaw deterioration of bridge deck concrete under fatigue load and freeze–thaw coupling by chopped basalt fibers

International Journal of Pavement Engineering, Год журнала: 2025, Номер 26(1)

Опубликована: Апрель 26, 2025

Язык: Английский

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Chloride transportation and electrochemical behavior of concrete containing corrosion-inhibiting admixture and its inhibition mechanism under compound salt and drying-wetting cycles

Journal of Building Engineering, Год журнала: 2023, Номер 80, С. 107995 - 107995

Опубликована: Окт. 30, 2023

Язык: Английский

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Effect of foaming characteristics of air entrained agents on mechanical properties and pore structures of cement-based materials in plateau mountainous regions

Journal of Building Engineering, Год журнала: 2024, Номер 91, С. 109590 - 109590

Опубликована: Май 10, 2024

Язык: Английский

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Service Life Prediction of Concrete with Combined Air-Entraining Admixture and Fibers under Freeze–Thaw Cycles Based on Critical Water Saturation Theory

Journal of Materials in Civil Engineering, Год журнала: 2024, Номер 36(9)

Опубликована: Июнь 21, 2024

Язык: Английский

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Effect of sulfate attack on geopolymer mortars at early ages of exposure

Materials and Structures, Год журнала: 2024, Номер 57(10)

Опубликована: Ноя. 21, 2024

Язык: Английский

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Bond performance between hybrid fiber-reinforced concrete and BFRP bars under freeze-thaw cycle

PLoS ONE, Год журнала: 2024, Номер 19(5), С. e0303327 - e0303327

Опубликована: Май 13, 2024

This study applied the pull-out test to examine influence of freeze-thaw cycles and hybrid fiber incorporation on bond performance between BFRP bars fiber-reinforced concrete. The bond-slip curves were fitted by existing constitutive model, then strength was predicted a BP neural network. results indicated that failure mode changed from splitting for bar ordinary concrete specimens when exceeded 50, while only occurred all specimens. An increasing trend shown peak slip, but decreasing stiffness increased. could be increased significantly basalt (BF) cellulose (CF) under same freezing thawing conditions as compared without fibers. Malvar model Continuous Curve performed best in fitting ascending descending sections curves, respectively. network also accurately strength, with relative errors strengths ranging 3.75% 13.7%, 86% them being less than 10%.

Язык: Английский

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Sulfate attack on geopolymer: effect of the proportion of binder and air-entraining additive

Revista IBRACON de Estruturas e Materiais, Год журнала: 2024, Номер 17(1)

Опубликована: Янв. 1, 2024

Abstract This research aimed to evaluate the resistance sodium and magnesium sulfates of geopolymeric mortars, prepared with different proportions alkaline activators silicate hydroxide (Ma), Na2O content in relation metakaolin (MK) silica modulus (Ms). Additionally, an air-entraining additive was also used attempt mitigate expansive effects sulfate attack for 20 weeks. The properties were evaluated by change longitudinal length, mass variation, compressive strength, flexural tensile microstructure. SEM/EDS analyses suggest formation caminite a structure aluminosilicate gel M-A-S-(H) mortars exposed MgSO4, while thenardite indicated as harmful product subjected Na2SO4. experimental results showed that greater amount Na2SiO3 geopolymer formulation contributes denser lower water absorption rate, but resulted physical deterioration expansion after immersion sulfate. did not minimize tensions generated attack. In synthesized Na2O/MK = 15% Ms 1.5 (GEO-15-1.5) 22% 1.0 (GEO-22-1.0 GEO-22-1.5), strengths similar standard samples when immersed Na2SO4 solution increase strength attributed temporary refinement pores crystals.

Язык: Английский

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