A5101883164- Innovative concrete reinforcement materials
- Concrete and Cement Materials Research
- Concrete Properties and Behavior
- Innovations in Concrete and Construction Materials
- Magnesium Oxide Properties and Applications
- Structural Behavior of Reinforced Concrete
- Concrete Corrosion and Durability
- BIM and Construction Integration
- Additive Manufacturing and 3D Printing Technologies
- Advanced ceramic materials synthesis
- Infrastructure Maintenance and Monitoring
- Rock Mechanics and Modeling
- Fire effects on concrete materials
- Civil and Geotechnical Engineering Research
- High-Velocity Impact and Material Behavior
- Bauxite Residue and Utilization
- Membrane-based Ion Separation Techniques
- Advanced Surface Polishing Techniques
- Smart Materials for Construction
- Geomechanics and Mining Engineering
- Anodic Oxide Films and Nanostructures
- Structural Engineering and Vibration Analysis
- Recycling and utilization of industrial and municipal waste in materials production
- Ammonia Synthesis and Nitrogen Reduction
- Simulation and Modeling Applications
Beijing Jiaotong University
2013-2024
Ministry of Transport
2021
Wayne State University
2016
Fuzhou University
2016
Fujian Agriculture and Forestry University
2016
China Academy of Building Research
2011
The capillary absorption capacity exerts an important effect on the durability of cement-based materials and is closely related to pore structure. In this study, a variety specimens were examined. water structure samples determined using gravimetric method mercury intrusion porosimetry (MIP), respectively. coefficients for different water–binder ratios, diverse types dosages mineral admixtures, various preloads measured. experimental results analyzed compared with data available in current...
For the sustainable development of construction materials, supplementary cementitious materials (SCMs) are commonly added to self-compacting concrete (SCC). This paper reviewed application techniques and hydration mechanisms SCMs in SCC. The impacts on microstructure performance SCC were also discussed. used as a powder material produce by replacing 10% 50% cement. Hydration include pozzolanic reaction, alkaline activation, adsorption effect. Moreover, filling effect dilution some can refine...
Ultra-high-performance concrete (UHPC) can be strategically applied in the lower part of a beam and combined with normal-strength (NC) to achieve more cost-effective design. The purpose this research was assess effects UHPC layer thickness, reinforcement ratio, reinforcing bar type, load level on enhancement fatigue performance, as well their interaction contribution layer. Four-point bending tests were conducted eleven 500-mm-deep 4400-mm-long T-beams under cyclic monotonic loading. test...
Ultrahigh-performance concrete (UHPC) is increasingly recognized as being a better material in girders, and composite prestressed UHPC-normal (NC) girder choice to be used for strengthening existing members precast constructions. In this study, 10 girders 1 pure NC were fabricated tested investigate the effect of UHPC heights, prestress levels, compressive strengths on flexural properties girders. The test results show that increasing level height both delayed formation propagation cracks....
Unhydrated cementitious materials in high-performance concrete (HPC) and ultra-high-performance (UHPC) undergo further hydration when they are supplied with water. A experiment on cement pastes was conducted to study the effects of temperature humidity their macroscopic properties. rapid evaluation mechanism for eventually presented. The results obtained under four analysed conditions indicated that compressive strength flexural increased by 22.6% 75.2%, respectively, after 180 d at a...
This study reports the findings of an experimental investigation shear behavior T-section reactive powder concrete (RPC) girders. A total 12 large-scale girders, each having a depth 500 mm, were produced to investigate influence span-to-effective ratio, longitudinal reinforcement and stirrup ratio on capacity failure mode. The results show that when span ranged from 1 4, mode is either compression or diagonal failure, whereas normal (NC) girders tension higher than 3. significantly affect...
The tensile strength, crack behavior, and strain-hardening properties of ultra-high-performance concrete (UHPC) are mainly affected by the steel fibers distributed in matrix. In this study, a mesoscopic model UHPC was established using numerical simulation method to study effects on propagation UHPC. First, exponential cohesive used simulate pull-out fiber embedded Then, distribution variation interfacial shear stress during process were obtained, fiber-pull-out load–displacement curve...
The relation between slump flow and yield stress of ultra-high performance concrete (UHPC) mixtures was studied with theoretical analysis experimentation. relational expression UHPC built then verified a rheological test. results showed that the prediction model, as function cone geometry dimensionless mixtures, constructed based on Tresca criteria, considering geometric morphological characterization parameters before after mixtures. rationality applicability model test different dosages...
The effect of curing conditions on the early age and long‐term shrinkage ultra high‐performance fiber‐reinforced concrete (UHPFRC) was systematically studied. (0–168 h) (0–90 d) UHPFRC material measured based three kinds humidity (dry, sealed, soaked) temperatures (25°C, 40°C, 75°C), respectively. In this paper, hydration degree different stages studied in combination with chemical‐bound water experiment. Meanwhile, influencing mechanism condition analyzed. results show that rate is...
In order to shorten construction periods, concrete is often cured using steam and loaded at an early age. This changes the performance even durability of compared that has been under normal conditions. Thus, pattern mechanism change different curing conditions, loading ages are great significance. The development brittleness conditions was studied. evaluation methods were used determine expounded. Steam, standard, natural carried out on single-side notched beams as well a prism cubic blocks....