Journal of Building Engineering, Journal Year: 2024, Volume and Issue: unknown, P. 110871 - 110871
Published: Oct. 1, 2024
Language: Английский
Case Studies in Construction Materials, Journal Year: 2025, Volume and Issue: unknown, P. e04408 - e04408
Published: Feb. 1, 2025
Language: Английский
Citations
2
Construction and Building Materials, Journal Year: 2024, Volume and Issue: 448, P. 138203 - 138203
Published: Sept. 6, 2024
Language: Английский
Citations
6
Materials, Journal Year: 2025, Volume and Issue: 18(5), P. 994 - 994
Published: Feb. 24, 2025
This paper examines the splitting tensile properties of rubberized polyethylene-engineered cementitious composites (RPECC) through static and dynamic experimental tests, highlighting effects thermal cycles, impact strain rates, rubber powder substitution rates for fine aggregates. Damage patterns, ultimate strength, time-dependent stress curves, failure strain, increase factor RPECC are presented. The microstructure material is analyzed using scanning electron microscopy energy-dispersive X-ray spectroscopy. Experimental results reveal that incorporating powders significantly enhances deformability ductility in tension. However, a high content powders, such as percentage 30%, reduces strength by 16.8% 34.2%, respectively. Microstructural examinations indicate cycling weakens internal adhesion between particles, polyethylene fibers, ECC matrix, resulting frequent withdrawal fibers formation calcium hydroxide, which diminishes up to 20.6% tests 45.1% tests. Despite these challenges, with 20% achieves favorable balance resistance, even after undergoing 270 heat-cool suggesting its potential applicability harsh environments.
Language: Английский
Citations
0
Construction and Building Materials, Journal Year: 2025, Volume and Issue: 476, P. 141233 - 141233
Published: April 14, 2025
Language: Английский
Citations
0
International Journal of Fatigue, Journal Year: 2025, Volume and Issue: unknown, P. 109039 - 109039
Published: May 1, 2025
Language: Английский
Citations
0
Engineering Structures, Journal Year: 2025, Volume and Issue: 330, P. 119891 - 119891
Published: Feb. 13, 2025
Language: Английский
Citations
0
Coatings, Journal Year: 2025, Volume and Issue: 15(4), P. 414 - 414
Published: March 31, 2025
The interfacial shear performance between ultra-high-performance concrete (UHPC) and normal (NC) is a critical factor in determining the overall of composite structures. This paper systematically reviews research progress on UHPC-NC, revealing core mechanisms bond strength (dominated by mechanical interlocking with chemical bonding as supplementary factor). It compares advantages disadvantages single-shear, Z-shaped shear, double-shear, inclined tests, clarifying influence patterns key parameters such interface roughness, matrix wetness, curing conditions, fiber content. study found that treatment most significant improving strength. Roughening or grooving treatments can increase more than 40%~80%, while combination rebar planting further enhance ductility. wetness (saturated moist) UHPC age (within 7 days) need to be strictly controlled avoid differences shrinkage stress. Prediction models based mechanics, finite element analysis, experimental data each have their should selected actual working conditions. To address common issues practical engineering, insufficient cracking, fatigue degradation under cyclic loading, it recommended adopt techniques (such roughening + planting), prestressing design, optimized distribution (with steel content 1.5%~2.5%). provides theoretical basis guidance for design optimization construction control reinforcement projects
Language: Английский
Citations
0
Construction and Building Materials, Journal Year: 2025, Volume and Issue: 477, P. 141253 - 141253
Published: April 17, 2025
Language: Английский
Citations
0
Engineering Structures, Journal Year: 2025, Volume and Issue: 336, P. 120455 - 120455
Published: April 26, 2025
Language: Английский
Citations
0
Buildings, Journal Year: 2024, Volume and Issue: 14(11), P. 3684 - 3684
Published: Nov. 19, 2024
This paper explores the effect of bonding size on shear performance ultra-high-performance concrete (UHPC) and normal (NC). The study includes two sets direct tests a total 16 Z-shaped UHPC-NC bonded specimens. first set consists eight chiseled interface with an average roughness 4 mm (referred to as series C), from authors’ previous study. second involves additional short steel rebars CS) that possess identical tests. discusses failure modes, stress–slip behavior, strain histories interfaces varying sizes mechanisms. A finite element model incorporating cohesive zone for was developed gain insights into bond evolutions. Our experimental results show specimens exhibit similar effects in stiffness, strength, interfacial slippage interface. use mitigated impact thereby enhancing stiffness reducing susceptibility brittle damage. Numerical simulations indicate stress inhomogeneity coefficients CS heights 100 mm, 200 330 440 were 1.2%, 1.8%, 11.9%, 17.4%, respectively. findings this provide valuable optimizing UHPC applications repair strengthening structures.
Language: Английский
Citations
2