Chikezie Chimere Onyekwena

ORCID: 0000-0003-0714-0236
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About
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Research Areas
  • Concrete and Cement Materials Research
  • CO2 Sequestration and Geologic Interactions
  • Magnesium Oxide Properties and Applications
  • Microbial Applications in Construction Materials
  • NMR spectroscopy and applications
  • Advanced Fiber Optic Sensors
  • Hydrocarbon exploration and reservoir analysis
  • Enhanced Oil Recovery Techniques
  • Geotechnical and construction materials studies
  • Soil and Unsaturated Flow
  • Drilling and Well Engineering
  • Seismic Imaging and Inversion Techniques
  • Tunneling and Rock Mechanics
  • Innovative concrete reinforcement materials
  • Photonic and Optical Devices
  • Advanced MEMS and NEMS Technologies
  • Groundwater flow and contamination studies
  • Dam Engineering and Safety
  • Methane Hydrates and Related Phenomena
  • Recycling and Waste Management Techniques
  • Mine drainage and remediation techniques
  • Hydraulic Fracturing and Reservoir Analysis
  • Hydrology and Watershed Management Studies
  • Geotechnical Engineering and Soil Stabilization
  • Layered Double Hydroxides Synthesis and Applications

Wuhan Institute of Technology
2025

Chenguang Research Institute of Chemical Industry
2025

Institute of Rock and Soil Mechanics
2021-2024

University of Chinese Academy of Sciences
2021-2024

Nnamdi Azikiwe University
2021

Nanoparticles effectively enhance the CO2 geological storage capacity by altering wettability during CO2–brine–rock interactions, which significantly impacts residual trapping and migration in reservoirs. However, effect of nanoparticles on interactions carbonate formations is poorly understood. Therefore, this study, impact SiO2 (SNPs) was evaluated under supercritical conditions (60 °C 12 MPa) analyzing wettability, conducting X-ray diffraction, scanning electron microscopy analyses,...

10.1021/acs.energyfuels.3c03356 article EN Energy & Fuels 2024-01-02

Dredged marine soils are increasingly recognized as a valuable resource amidst growing environmental concerns and the need for sustainable waste recycling. This study presents an innovative soil stabilization technique combining recycled aggregate (RA) magnesium oxide (MgO), with dual focus on enhancing properties promoting carbon dioxide (CO2) sequestration. The stabilizing effects of RA MgO were evaluated independently synergistically under varied curing conditions durations,...

10.1139/cgj-2024-0371 article EN Canadian Geotechnical Journal 2025-01-14

Dredged marine soils (DMS) have poor engineering properties, which limit their usage in construction projects. This research examines the application of reactive magnesia (rMgO) containing supplementary cementitious materials (SCMs) to stabilize DMS under ambient and carbon dioxide (CO2) curing conditions. Several proprietary experimental tests were conducted investigate stabilized DMS. Furthermore, carbonation-induced mineralogical, thermal, microstructural properties change samples...

10.1016/j.jrmge.2023.05.005 article EN cc-by-nc-nd Journal of Rock Mechanics and Geotechnical Engineering 2023-06-30

This article highlights an intensity variation-based force sensor for polymer optical fiber (POF) that relies on the twisting structure. The sensing phenomena of rely cladding mode frustrated total internal reflection (CMFTIR). A portion two POFs is twisted in middle where light source connected with illuminating fiber, and power meter forward end second fiber. Thus, measurement taken from by observing variation coupled which applied up to 0–20 N. analyzed straight bend, without bend...

10.1109/jsen.2022.3219205 article EN IEEE Sensors Journal 2022-11-14

Cement-stabilized soil retaining wall structures are becoming increasingly popular for high-speed railway lines. However, the widely used Portland cement is heavily associated with carbon dioxide (CO2) emissions. Additionally, rising cost and scarcity of sand traditionally as fill material a concern. Besides, geomechanical performances cement-stabilized walls using three-dimensional (3-D) finite element method (FEM) numerical analysis have seldom been investigated. To address these issues,...

10.1080/1064119x.2023.2211060 article EN Marine Georesources and Geotechnology 2023-05-18

MgO-based binders enhance soil stability and CO 2 sequestration. This study examines soft dredged marine soils treated with MgO, integrated biochar or slag, demonstrating significant improvements in properties environmental benefits.

10.1039/d4va00095a article EN cc-by-nc Environmental Science Advances 2024-01-01

This study explores imbibition dynamics and flowback of fracturing fluids in Penglaizhen sandstones by experiment nuclear magnetic resonance analysis. A gas–water system was considered samples were subjected to different boundary conditions fully immersed the wetting phase for imbibition. close range pore radius observed between 0.1 nm 9.3 μm all samples. Basic features phases represented profile, parameters quantified terms gas recovery, capacity, index connectivity, diffusion ability,...

10.1021/acs.energyfuels.1c01417 article EN Energy & Fuels 2021-09-22

The mismanaged electrolytic manganese residue (EMR) contains large amounts of heavy metals (HMs) and ammonia nitrogen (AN), which would release into the surrounding environment during precipitation. Batch column leaching tests were conducted to investigate release, migration, transformation HMs AN from EMR, was collected a typical abandoned EMR stockpile in Guangxi Province China. total contents Cd, Cr, Mn, Ni, Pb, Zn, 3.750×10 0 , 3.582×10 2 3.283×10 4 2.562×10 5.407×10 1 3.254×10 1.445×10...

10.2139/ssrn.4215312 article EN SSRN Electronic Journal 2022-01-01
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