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Meeting MS&T22: Materials Science & Technology
Symposium Advanced Materials for Harsh Environments
Presentation Title Understanding Hydration-induced Cracking, Corrosion and Self-healing Mechanisms in Advanced Concrete Using Electron Microscopy and Quantitative Non-destructive 3D Mineral Characterization
Author(s) Andy Holwell, Maadhav Kothari, Edward Hill, Tanvir Qureshi
On-Site Speaker (Planned) Andy Holwell
Abstract Scope Almost all civil engineering infrastructure requires concrete. Cracks in concrete due to hydration, corrosion and chemical changes are a major source of reduced durability and financial loss. One such degradation mechanism is hydration-induced cracking that can result in devastating effects. Here we demonstrate hydration of self-healing concrete in situ within the chamber of a scanning electron microscope under variable pressure. Mechanistic effects of cracking and self-healing are studied via electron imaging and electron dispersive X-ray spectroscopy, to visualise the re-crystallisation of calcium carbonate in effectively healing the material. We further employ 3D X-ray microscopy alongside 3D mineralogy to determine structure and composition within a concrete core non-destructively, understanding particles, mineral relationships, and structure of concrete, even deeply buried features. We use a ground-breaking technique that can quantitatively assess mineral composition in a bulk using characteristic X-ray back projection energies and deep learning-based reconstruction of 3D X-ray data.
Proceedings Inclusion? Planned: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

An Investigation of High Temperature Corrosion Sensing for Coal-based Power Plant Operations
Characterization of Nb-Si Alloys for High-temperature Applications
CMAS Interaction with Model YAlO3 Environmental Barrier Coatings: Effect of Y3Al5O12 Precipitation on Apatite Nucleation and Growth
Corrosion Detection in Oil and Gas Pipeline Using 3-D Bluetooth Printed Microsensor
Corrosion Phenomena in Powder-Processed Aluminum Alloys Containing Quasicrystalline Dispersoids
Electrochemical Characterization of Joints Inconel 600 to TiC-Composites, Immersed in Seawater
Exfoliated-graphite-based Flexible Graphite as a Multifunctional Material for Harsh Environments
Expulsion of Arsenic Metals from Water Using Zinc Nanoparticles: A Review
Far-Field Passive Wireless Sensors using Conductive Ceramic for High-Temperature Health Monitoring
Grain Boundary Engineering to Improve Austenitic Stainless Steels Stress Corrosion Cracking Behavior in Boiling Saturated Magnesium Chloride Solutions
Heat-Resistant Nickel Alloy ЖС3ДК-ВІ Modification with Titanium Carbonitride Ultrafine Powders
High Temperature Irradiation Resistant Thermocouples for In-Pile Temperature Sensing
High Temperature Thick Film Sensor Development Based on Doped Lanthanum Chromites Refractory Semiconductors Materials
Integrating Multimodal Corrosion with Correlative Microscopy Across Multiple Lengthscales
Investigation of Stress Corrosion Cracking in CMSX-4 Turbine Blade Alloys Using Deep Learning Assisted X-ray Microscopy
Irvingia gabonensis Leaf-Extract Effect on Concrete Steel-Reinforcement Corrosion in Industrial/Microbial Simulating-Environment
Isothermal Oxidation Behavior of Pack-Cementation Coated Three-phase Mo-Nb-Si-B Alloys
JHU/APL’s Science of Extreme and Multifunctional Materials Program: Materials Research with Mission Intent
Modeling of High-efficiency Heat Exchanger Pipe with Twisted Tape Inserts
New Strategies for Designing Colloidal Inks for Additive Manufacturing of UHTCs
Rhenium Free Heat-resistant Monocrystalline Nickel Alloy Development
Root Cause Spectroscopic Failure Investigation Aided by High Resolution SEM/EDS, FT-IR, XPS Instruments
Silica Nanoparticles via Sol Gel Synthesis: A Concise Review on the Expulsion of Heavy Metals from Their Solution
Stress Corrosion Mitigation in Al-Mg via Zn-Rich Primers and Long-Term Performance Stability
The Role of Residual Stress in Crystallographic Orientation Dependent Corrosion Rates of Aluminum
Titanium Coatings on Materials for Harsh Environments and Corrosion in Interaction with the Environment in Coke Production
Understanding Hydration-induced Cracking, Corrosion and Self-healing Mechanisms in Advanced Concrete Using Electron Microscopy and Quantitative Non-destructive 3D Mineral Characterization
Utilization of Acacia senegal for Rubber Processing Effluent Treatment: pH Variations and Optimum Dose determination

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