Namkon Lee
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View article: Investigating Pozzolanic Reactivity of Ground Ferronickel Slag Through the R3 Test for Its Potential Use as Alternative Supplementary Cementitious Material
Investigating Pozzolanic Reactivity of Ground Ferronickel Slag Through the R3 Test for Its Potential Use as Alternative Supplementary Cementitious Material Open
This study investigates the pozzolanic reactivity of ferronickel slag (FNS), the fourth most discharged smelting by-product in China. Cumulative heat of hydration (R3) tests were conducted on FNS with varying fineness levels (111.27 to 4.5…
View article: Effect of mono-ethylene glycol on hydration and mechanical properties of waste glass replacement cement composites
Effect of mono-ethylene glycol on hydration and mechanical properties of waste glass replacement cement composites Open
View article: Plasma-mediated nano-silica deposition to enhance thermomechanical robustness of carbon textile-reinforced concrete
Plasma-mediated nano-silica deposition to enhance thermomechanical robustness of carbon textile-reinforced concrete Open
Carbon textile-reinforced concrete (CTRC) lacks thermomechanical robustness at the textile/concrete interface. This study investigates atmospheric-pressure plasma (APP)-mediated nano-silica (NS) deposition as a promising strategy, evaluati…
View article: Engineering Nanosilica Aerogel from Waste Glass for Lightweight Insulating Concrete
Engineering Nanosilica Aerogel from Waste Glass for Lightweight Insulating Concrete Open
View article: Understanding the role of C-S-H seeds and sulfate in the lightweight cementitious composites containing fly ash cenospheres
Understanding the role of C-S-H seeds and sulfate in the lightweight cementitious composites containing fly ash cenospheres Open
View article: Recycling of aluminosilicate solid wastes in a novel glass calcined clay cement (GC <sup>3</sup> )
Recycling of aluminosilicate solid wastes in a novel glass calcined clay cement (GC <sup>3</sup> ) Open
The limited availability of high‐quality kaolin clay restricts the large‐scale operation of limestone calcined clay cement (LC 3 ) in concrete production, especially in these resource‐scare coastal areas like Hong Kong and Singapore. In th…
View article: Ground steel slag based cementless binder activated by sodium bicarbonate
Ground steel slag based cementless binder activated by sodium bicarbonate Open
The utilization of steel slag as a supplementary cementitious material has been limited due to its low hydraulic or pozzolanic reactivity. This study investigated the enhancement of the hydration property of steel slag paste and the signif…
View article: Advanced insight on chloride distribution due to diethanol-isopropanolamine in high-volume slag cement
Advanced insight on chloride distribution due to diethanol-isopropanolamine in high-volume slag cement Open
View article: Effect of Curing Temperature on the Carbonation Kinetics, Microstructure, and Mechanical Properties of Co2-Cured Pseudowollastonite
Effect of Curing Temperature on the Carbonation Kinetics, Microstructure, and Mechanical Properties of Co2-Cured Pseudowollastonite Open
View article: Phase Development, Microstructure, and Mechanical Performance of Glycine-Activated Steel Slag Under Ambient Curing Conditions
Phase Development, Microstructure, and Mechanical Performance of Glycine-Activated Steel Slag Under Ambient Curing Conditions Open
View article: A Study on the Development of a Filtration System for Drainage Discharge Capacity
A Study on the Development of a Filtration System for Drainage Discharge Capacity Open
This study analyzes the social and economic characteristics of an area affected by chemical emission facilities and proposes policy measures to respond to social disasters such as hazardous chemical emission accidents. Even within the area…
View article: Enhanced hydration reaction of synthesized C4A0.81F1.19 with the use of different grinding agents
Enhanced hydration reaction of synthesized C4A0.81F1.19 with the use of different grinding agents Open
Tetracalcium aluminoferrite (C 4 AF) presents in ordinary Portland cement (OPC) as a solid solution phase, as C 4 A x F 2− x (0.7 ≤ x ≤ 1.1). There is a limited understanding of the hydration reactions of C 4 AF, particularly regarding the…
View article: Performance of Self-healing Cementitious Mortar with PVA Fiber and SAP
Performance of Self-healing Cementitious Mortar with PVA Fiber and SAP Open
Although concrete materials generally exhibit outstanding mechanical properties, it is susceptible against crack formation. It has been reported that narrow cracks (≤ 150 µm) could be naturally sealed in the cement matrix by externally sup…
View article: Effect of in situ CO2 mixing of cement paste on the leachability of hexavalent chromium (Cr(VI))
Effect of in situ CO2 mixing of cement paste on the leachability of hexavalent chromium (Cr(VI)) Open
View article: Effect of In situ CO2 Mixing of Cement Paste on the Leachability of Hexavalent Chromium (Cr(VI))
Effect of In situ CO2 Mixing of Cement Paste on the Leachability of Hexavalent Chromium (Cr(VI)) Open
In situ CO2 mixing technology is a potential technology for permanently sequestering CO2 during concrete manufacturing processes. Although it has been approved as a promising carbon capture and utilisation (CCU) metho…
View article: Carbon sequestration in cementitious systems through CO2-rich hydration and chemically enforced CO2 mineralization
Carbon sequestration in cementitious systems through CO2-rich hydration and chemically enforced CO2 mineralization Open
Cementitious materials as a medium of carbon capture, and utilization (CCU) have recently attracted considerable attentions. Atmospheric CO2 can be absorbed in hardened concrete, which can be also accelerated by early age CO2 curing. Compa…
View article: Microscopic analysis of mechanical anisotropy and damage evolution of 3D printed rock-like samples under uniaxial compressive tests
Microscopic analysis of mechanical anisotropy and damage evolution of 3D printed rock-like samples under uniaxial compressive tests Open
Three-dimensional printing (3DP) offers valuable insight into the characterization of natural rocks and the verification of theoretical models due to its high reproducibility and accurate replication of complex defects such as cracks and p…
View article: Experimental Study on Strength Enhancement and Porosity Variation of 3D-Printed Gypsum Rocks: Insights on Vacuum Infiltration Post-Processing
Experimental Study on Strength Enhancement and Porosity Variation of 3D-Printed Gypsum Rocks: Insights on Vacuum Infiltration Post-Processing Open
Three-dimensional printing (3DP) technology has shown great potential in rock mechanics and mining engineering due to its ability to create complex and customized objects with high precision and accuracy. At present, an emerging research f…
View article: Impact of triisopropanolamine on surface composition, crystallographic variation, and thermal behavior of C3A polymorphs
Impact of triisopropanolamine on surface composition, crystallographic variation, and thermal behavior of C3A polymorphs Open
In this study, the impact of triisopropanolamine (TIPA) on both the crystallographic and surface properties of cubic and orthorhombic tricalcium aluminate (C 3 A) were investigated together with their hydration behavior and strength develo…
View article: Verification of the presence of superabsorbent polymers (SAP) in fresh concrete: results of an interlaboratory study of RILEM TC 260-RSC
Verification of the presence of superabsorbent polymers (SAP) in fresh concrete: results of an interlaboratory study of RILEM TC 260-RSC Open
View article: Investigation on the Micro-Grinding Induced Crystallographic Variations of Nine Different Clinkers
Investigation on the Micro-Grinding Induced Crystallographic Variations of Nine Different Clinkers Open
Although clinker has been used for many years, complicated mineralogical properties of clinker pose challenges for the precise quantification. In this study, the mineralogical and crystallographic properties of nine different clinkers acco…
View article: Synergetic effect of CO2 curing and bottom ash with low Ca on the enhancement of carbonation behavior and mechanical performance
Synergetic effect of CO2 curing and bottom ash with low Ca on the enhancement of carbonation behavior and mechanical performance Open
This study investigated ordinary Portland cement substituted with ground bottom ash (BAOPC) under various conditions of BA contents and CO2 curing. In samples without CO2 curing, the strength development along with degree of hydration were…
View article: Hydration and Microstructural Development of Cement Pastes Incorporating Shape-Stabilized Phase Change Materials (Sspcms)
Hydration and Microstructural Development of Cement Pastes Incorporating Shape-Stabilized Phase Change Materials (Sspcms) Open
View article: Insight into Chloride Binding Mechanism of High-Volume Slag Cement by Adding Diethanol-Isopropanolamine: Improvement of Friedel's Salt Formation and Reduction of Chloride Ions in C-a-S-H
Insight into Chloride Binding Mechanism of High-Volume Slag Cement by Adding Diethanol-Isopropanolamine: Improvement of Friedel's Salt Formation and Reduction of Chloride Ions in C-a-S-H Open
View article: Nahco3-Induced Internal Carbonation for Enhancing the Properties of Cao-Activated Ggbfs
Nahco3-Induced Internal Carbonation for Enhancing the Properties of Cao-Activated Ggbfs Open
View article: Performance improvement of Portland-limestone cement by mechanochemical activation
Performance improvement of Portland-limestone cement by mechanochemical activation Open
This study investigates mechanochemical activation with alkanolamine-based agents for improving the material performance of Portland-Limestone Cement (PLC). By using 0.1 wt% of diethanolisopropanolamine during grinding process, a noticeabl…
View article: Verification of the presence of superabsorbent polymer (SAP) in fresh concrete: results of an interlaboratory study
Verification of the presence of superabsorbent polymer (SAP) in fresh concrete: results of an interlaboratory study Open
New methods are proposed for the verification of the presence of superabsorbent polymers (SAP) in freshly mixed concrete and estimation of SAP quantity. The methods are in general based on flushing concrete with excess water. They allow se…
View article: Machine Learning Based Reactivity Prediction of Fly Ash Type F Produced from South Korea
Machine Learning Based Reactivity Prediction of Fly Ash Type F Produced from South Korea Open
Fly ash (FA) is the most commonly used supplementary cementitious material in the world. However, the reactivity of FA varies substantially. In this study, new machine learning (ML) model has been developed to efficiently predict the amorp…
View article: Importance of amorphous content, surface energy, and preferred orientation on the accurate quantification of cement minerals in clinkers
Importance of amorphous content, surface energy, and preferred orientation on the accurate quantification of cement minerals in clinkers Open
In this study, a quantitative phase analysis of nine different clinkers was performed using X-ray diffraction (XRD). Density function theory simulation was also used to support the observed phenomenon of the micro-grinding-induced variatio…
View article: Machine Learning Approaches for the Micrographic Evaluation of Carbon Nanotube Cement Composites
Machine Learning Approaches for the Micrographic Evaluation of Carbon Nanotube Cement Composites Open