A5033402702- Concrete and Cement Materials Research
- Multiferroics and related materials
- Ferroelectric and Piezoelectric Materials
- CO2 Sequestration and Geologic Interactions
- Magnesium Oxide Properties and Applications
- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Calcium Carbonate Crystallization and Inhibition
- Microwave Engineering and Waveguides
- Layered Double Hydroxides Synthesis and Applications
- melanin and skin pigmentation
- Recycling and utilization of industrial and municipal waste in materials production
- Acoustic Wave Resonator Technologies
- Advanced ceramic materials synthesis
- Nuclear materials and radiation effects
- Dielectric properties of ceramics
- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Magnetic properties of thin films
- Chemical Synthesis and Characterization
- Superconducting and THz Device Technology
- High-pressure geophysics and materials
- Skin Protection and Aging
- Enhanced Oil Recovery Techniques
- Building materials and conservation
Hong Kong Polytechnic University
2022-2024
Nanjing Institute of Technology
1994-2024
Wuhan University of Technology
2017-2023
Irvine University
2022
University of California, Irvine
2022
Los Alamos National Laboratory
2017-2021
Northeastern University
2020
Wuhan University of Science and Technology
2019
Materials Science & Engineering
2019
State Key Laboratory of Silicate Materials for Architecture
2019
High-alkaline waste cement possesses significant potential for effectively capturing and sequestering carbon dioxide, transforming it into calcium-rich, highly reactive, supplementary cementitious materials. Water plays a pivotal role in facilitating this reaction, yet there is conspicuous absence of extensive research domain. This study elucidates the mechanisms by which water affects growth behavior (precipitation crystallization) calcium carbonate (Cc) hydrated paste during carbonation....
Abstract This study introduces a novel rapid calcination method for partially calcined dolomite (PCD) precursors, offering transformative approach to sustainable cementitious materials. Unlike traditional partial calcination, which involves prolonged thermal treatment, this process (0–5 min) minimizes energy consumption and CO₂ emissions by leveraging the distinct decomposition kinetics of MgCO 3 CaCO . method's tailored Mg/Ca ratio significantly enhances hydration kinetics, producing...
Sulfate erosion is one of the main durability issue ordinary Portland cement (OPC) while used in a sulfate-rich environment. Two aluminate phases OPC, tricalcium (C3A) and tetracalcium aluminoferrite (C4AF), are primarily responsible for sulfate attack but with different resistant performance. This paper therefore focuses on internal invasion to hydration products these two minerals attempts explain role irons hydrates. Chemical shrinkage coupled X-ray diffraction (XRD), scanning electron...
Abstract Understanding the doping behavior of impurity ions in clinker phases is crucial for controlling effect on compounds, which, however, has not yet been fully demonstrated due to composition complexity. Herein, we employ state‐of‐the‐art ab initio calculation uncover substitution mechanism Cu 4 dominant crystals. The defect formation energies indicate energetically prefer substitute Fe ferrite, which accord with experiments. bond order difference innovatively postulated interpret...
ABSTRACT Illustrating the influence of Fe dosage and temperature on formation sulfoaluminate hydrates is great significance to understand early hydration process high ferrite cement under steam curing. Herein, impact ettringite at different temperatures was revealed through combination experiments computational simulations. A no more than 20% conspicuously accelerated crystal growth by increasing surface energy in (0 0 1) direction, whereas a higher suppressed as incorporation ions into...
The feasibility of carbon mineralization relies on the carbonation efficiency CO2-reactive minerals, which is largely governed by water content and state within material mesopores. Yet, pivotal role confined in regulating at nanoscale not well understood. Here, we show that maximum CO2 intake occurs an optimal relative humidity (RHopt) when capillary condensation initiates hydrophilic At this transition state, pore becomes filled with metastable low-density water, providing ideal docking...
Chemical doping is a promising scheme for sustainable development of green and economical cement manufacturing related to global energy environmental concerns. Understanding controlling effect on reactive components the prerequisite. This study aims propose effective theoretical methods reveal correlation between hydration reactivity doped clinker crystals their electronic structures. Four dominant Portland phases with copper are comparatively investigated by state-of-the-art ab initio...
Abstract. In this study, we have integrated an up-to-date physio-chemical transformation mechanism of Hg into the framework US EPA's CMAQ model system. addition, adapted detailed calculations air-surface exchange for to properly describe re-emissions and dry deposition from natural surfaces. The covers in three categories, elemental (Hg0), reactive gaseous (RGM) particulate (HgP). With interfacing MM5 (meteorology processor) SMOKE (emission processor), applied a 4-week period June/July 1995...
Abstract Superhydrophobic surfaces applying on concrete can greatly improve the durability of by preventing damage from water. However, traditional design superhydrophobic external coating encounters to problems flaking and poor surface robustness, while that adding hydrophobic agents or particles faces challenges strength concrete. Drawing inspiration carbonation phenomenon concrete, here a new in situ growing structures is proposed: The sample impregnated into Mg 2+ ‐containing...
CO 2 mineralization, a process where reacts with minerals to form stable carbonates, presents sustainable approach for sequestration and mitigation of global warming. While the crucial role water in regulating mineralization efficiency is widely acknowledged, comprehensive understanding underlying mechanisms remains elusive. This study employs combined experimental atomistic simulation elucidate intricate governing moisture-driven carbonation kinetics calcium-bearing minerals. A...
We propose the perfect all-carbon axisymmetric spintronic devices consisting of a zigzag-edged trigonal graphene (ZTG) linked to left and right nanoribbons (ZGNR) electrodes via carbon atomic chains (CACs). To ensure stability system, edge atoms are passivated by hydrogen atoms. The self-consistent density functional theory (DFT) calculations show that simple system possesses prefect spin-filtering property at wide voltage region from −1.0 1.0 V. More importantly, proposed can act as dual...
In this study, the adsorption behavior of various molecules, including H2O, CO2, and H2CO3, on C2S surface in carbonation system was systematically compared to elucidate microscopic mechanism early accelerated using density functional theory ab initio molecular dynamics. The electronic structures β-C2S γ-C2S surfaces differ, that valence band maximum is contributed by O p orbital Ca s orbital, respectively. This difference results different proton–surface interactions. protons hydroxylated...