Improving the salt frost resistance of recycled aggregate concrete modified by air-entraining agents and nano-silica under sustained compressive loading

Case Studies in Construction Materials, Journal Year: 2024, Volume and Issue: 20, P. e03170 - e03170

Published: April 17, 2024

This paper systematically investigated the combined effects of sustained compressive loading and salt frost resistance for recycled aggregate concrete (RAC) incorporating air-entraining agents (AEA) nano silica (NS). The different RCA replacement ratios, freeze-thaw cycles, AEA dosage stress level on damage properties including apparent morphology, mass loss rate relative dynamic elastic modulus (RDEM) were discussed. microstructure evolution RAC samples before after cycles characterized analyzed through SEM observation, microhardness measurement X-CT tests. synergistic modification mechanism NS under action investigated, link between macroscopic microscopic air-entrained NS-modified was further explored. results showed that mixed with a certain amount dosages exhibited stronger compared to control group. effect similar changing trends RAC. When adding moderate applying loading, RDEM reduced so partly improved. Similarly, can reduce deterioration at ITZs compound use proved be as an efficient method strengthen RAC, improving coupled actions chloride attack. study provides feasible approach improve which is expected promote application extension in complex environmental regions.

Language: Английский

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Experimental investigation on the frost resistance of RCC layers with various interface treatments

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 449, P. 138564 - 138564

Published: Oct. 1, 2024

Language: Английский

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Analysis of fractal and energy characteristics of low-temperature concrete under an impact load

Cold Regions Science and Technology, Journal Year: 2025, Volume and Issue: unknown, P. 104493 - 104493

Published: March 1, 2025

Language: Английский

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A Critical Review on the Applications of Modified Recycled Coarse Aggregate in Conventional Concrete and High-Performance Concrete

Journal of Building Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112601 - 112601

Published: April 1, 2025

Language: Английский

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Salt-frost damage characterization of simulant multiple ITZs in nano-silica modified recycled aggregate concrete

Materials Today Communications, Journal Year: 2024, Volume and Issue: 41, P. 110296 - 110296

Published: Sept. 4, 2024

Language: Английский

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Study on strain localization of frozen sand based on uniaxial compression test and discrete element simulation

Cold Regions Science and Technology, Journal Year: 2024, Volume and Issue: 223, P. 104221 - 104221

Published: April 30, 2024

Language: Английский

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Hydro-thermal-mechanical characteristics and sustainability of geopolymer solidified soils incorporating nano-silica in cold regions

Cold Regions Science and Technology, Journal Year: 2024, Volume and Issue: unknown, P. 104397 - 104397

Published: Dec. 1, 2024

Language: Английский

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Study on the influence of early frost attack on the performance of cement mortar

Cold Regions Science and Technology, Journal Year: 2024, Volume and Issue: unknown, P. 104329 - 104329

Published: Sept. 1, 2024

Language: Английский

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Monitoring evolutionary damage of bended concrete beams subjected to freeze-thaw cycling through piezoelectric-enabled wave propagation method

Cold Regions Science and Technology, Journal Year: 2024, Volume and Issue: unknown, P. 104337 - 104337

Published: Sept. 1, 2024

Language: Английский

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Frost durability of cementitious materials: what’s next?

Case Studies in Construction Materials, Journal Year: 2024, Volume and Issue: unknown, P. e04014 - e04014

Published: Nov. 1, 2024

Language: Английский

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