Research on the Full Life Cycle Deformation, Stress Response, and Dynamic Fatigue Performance of Concrete Structures in Pump Stations DOI Creative Commons
Min Yuan,

Xianhong Zhu,

Lei Han

et al.

Buildings, Journal Year: 2024, Volume and Issue: 14(12), P. 4052 - 4052

Published: Dec. 20, 2024

Concrete structures are subjected to static and fatigue loads during long-term service, temperature changes can cause in the volume of concrete, leading stress damage, which affect mechanical properties service life a structure. In response current lack three-dimensional analysis exploration behavior damage evolution processes concrete under variable environmental conditions, this paper relies on Fenghuangjing Pump Station project involving Yangtze River Huaihe constructs thermo-mechanical-fatigue-damage model based power exponent function constitutive model. By using multiple coupled simulation calculations predict performance structures; analyzing stress, deformation, from construction operation; comparing measured data; dynamically optimizing inversion obtain thermal parameters; proposing key control warning indicators thresholds, research results provide reference for safe operation similar projects.

Language: Английский

The effect of microwave curing on the static and dynamic mechanical properties and thermal brittleness of coal gangue concrete DOI
Qingfu Li, Hailong Wang, Huijun Xue

et al.

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 463, P. 140025 - 140025

Published: Jan. 26, 2025

Language: Английский

Citations

2
Mechanical properties of alkali activated geopolymer cement mortar for non vibratory compacted trench backfilling DOI Creative Commons
Jizhou Duan, Hao Li,

Haolong Guo

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 10, 2025

In this study, fly ash and metakaolin are examined as replacements in cementitious materials to reduce environmental pollution. An orthogonal test was conducted with nine groups of geopolymer mortars prepared by varying the ratio amount composite alkali activator (NaOH-Na2SiO3). The optimal mortar its feasibility a non-vibrated pipe trench backfill were using fluidity mechanical property tests. Combined microscopic tests, pore structure hydrate phase analysed. results showed that 30% (F30), 10% (M10), 4% (A4) had best performance achieved compressive flexural strengths 17.2 MPa 5.55 MPa, respectively, 157 mm; these meet requirements for materials. addition, according strength comparison different groups, better effect on properties material than ash. Microscopic analysis revealed hydratable substances such potassium feldspar montmorillonite decomposed under action OH- formed C-(A)-S-H N-A-S-H gels, along A-type zeolite crystals; improved density mortar. This study provides valuable insights into potential use alkali-activated vibration-free pipeline trenches.

Language: Английский

Citations

0
Detecting impact damage and characterizing pore structure in fractured rocks using nuclear magnetic resonance technology DOI
Zhen Jiang,

Huanhuan Qiao,

Guojun Cai

et al.

Measurement, Journal Year: 2025, Volume and Issue: unknown, P. 117649 - 117649

Published: April 1, 2025

Language: Английский

Citations

0
Gradation reconstruction of uranium heap leaching tailings and its impact on filling performance DOI Creative Commons
Fulin Wang, Ziyang He, Lu Wang

et al.

Case Studies in Construction Materials, Journal Year: 2025, Volume and Issue: 22, P. e04713 - e04713

Published: April 28, 2025

Language: Английский

Citations

0
Pore structure and mechanical characteristics of CRS mortar based on NMR and fractal theory DOI
Zhen Jiang,

Guojun Cai,

Yao Liu

et al.

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 457, P. 139459 - 139459

Published: Dec. 1, 2024

Language: Английский

Citations

3
Research on the Full Life Cycle Deformation, Stress Response, and Dynamic Fatigue Performance of Concrete Structures in Pump Stations DOI Creative Commons
Min Yuan,

Xianhong Zhu,

Lei Han

et al.

Buildings, Journal Year: 2024, Volume and Issue: 14(12), P. 4052 - 4052

Published: Dec. 20, 2024

Concrete structures are subjected to static and fatigue loads during long-term service, temperature changes can cause in the volume of concrete, leading stress damage, which affect mechanical properties service life a structure. In response current lack three-dimensional analysis exploration behavior damage evolution processes concrete under variable environmental conditions, this paper relies on Fenghuangjing Pump Station project involving Yangtze River Huaihe constructs thermo-mechanical-fatigue-damage model based power exponent function constitutive model. By using multiple coupled simulation calculations predict performance structures; analyzing stress, deformation, from construction operation; comparing measured data; dynamically optimizing inversion obtain thermal parameters; proposing key control warning indicators thresholds, research results provide reference for safe operation similar projects.

Language: Английский

Citations

0