Hyun-Do Yun
YOU?
Author Swipe
View article: Topological considerations for reinforced concrete modular protection systems against near-field overpressure generated by close-in detonations
Topological considerations for reinforced concrete modular protection systems against near-field overpressure generated by close-in detonations Open
With the increasing demand for secure infrastructure such as hydrogen refueling stations, chemical plants, and energy storage systems, the need for protective structures capable of withstanding close-in detonations has become more critical…
View article: Retention strength of carbon fiber reinforced polymer rebar under elevated temperatures
Retention strength of carbon fiber reinforced polymer rebar under elevated temperatures Open
Understanding the performance of carbon fiber reinforced polymer under elevated temperatures is essential to expanding its application in construction, particularly in fire-prone environments. This study investigates the mechanical behavio…
View article: Effects of ultrasonication on electrical and self-sensing properties for fiber-reinforced cementitious composites containing MWCNTs
Effects of ultrasonication on electrical and self-sensing properties for fiber-reinforced cementitious composites containing MWCNTs Open
The uniform dispersion of carbon nanotubes (CNTs) is essential for enhancing the mechanical and electrical properties of cement composites. This improvement significantly increases their potential for use in embedded self-sensing applicati…
View article: Prediction of the heat of hydration of fly ash concrete by adiabatic temperature rise test and regression analysis
Prediction of the heat of hydration of fly ash concrete by adiabatic temperature rise test and regression analysis Open
This paper deals with the proposal of a model that can predict the heat of hydration of concrete containing fly ash and the adiabatic temperature rise test results that are the basis of the model. For the adiabatic temperature rise tests, …
View article: Effect of Contents, Tensile Strengths and Aspect Ratios of Hooked-End Steel Fibers (SFs) on Compressive and Flexural Performance of Normal Strength Concrete
Effect of Contents, Tensile Strengths and Aspect Ratios of Hooked-End Steel Fibers (SFs) on Compressive and Flexural Performance of Normal Strength Concrete Open
This study is a part of the study to simplify the reinforcing details of reinforced concrete (RC) structural members by substituting the conventional reinforcement with hooked-end steel fibers (SFs). This paper investigates the effects of …
View article: pH sensor using aniline blue and functionalized nylon for monitoring the final stage of concrete carbonation
pH sensor using aniline blue and functionalized nylon for monitoring the final stage of concrete carbonation Open
The construction industry is one of the most significant contributors to global warming, with 5% of the world’s CO 2 emissions coming from the manufacturing process of cement. Therefore, to slow the rate of global warming, efforts are need…
View article: Piezoresistive properties of strain-hardening cement composite with liquid-type multi-walled carbon nanotubes dispersed by ultrasonicator
Piezoresistive properties of strain-hardening cement composite with liquid-type multi-walled carbon nanotubes dispersed by ultrasonicator Open
Multi-walled carbon nanotubes (MWCNTs) are a new type of nanomaterial with superior performance. They are frequently used in cement matrices to increase electrical conductivity and as a sensor for monitoring the health of building structur…
View article: Residual flexural tensile strength properties of notched concrete beams with high-strength steel fibers
Residual flexural tensile strength properties of notched concrete beams with high-strength steel fibers Open
The purpose of this study is to replace the steel bars and barbed wires in reinforced concrete structures, conduct experiments using steel fiber-reinforced concrete (SFRC), and investigate its failure modes. We conduct the experiments by p…
View article: Effect of micro steel fibre contents on compressive and self-sensing properties of polyethylene fibre-reinforced cement composite (PE-FRCC) in cyclic compression
Effect of micro steel fibre contents on compressive and self-sensing properties of polyethylene fibre-reinforced cement composite (PE-FRCC) in cyclic compression Open
This study is conducted to develop a cement-based strain-detecting sensor with high cost-effectivity, large strain measuring range and good compatibility with concrete infrastructures. The paper describes experimental results on the compre…
View article: Electrical Properties of Strain-Hardening Cement Composite (SHCC) with Multi-Walled Carbon Nanotubes Exposed to High temperature up to 900 °C
Electrical Properties of Strain-Hardening Cement Composite (SHCC) with Multi-Walled Carbon Nanotubes Exposed to High temperature up to 900 °C Open
Cement-based sensors mixed with carbon nanotube (CNTs) for structural health monitoring were studied to detect changes in electrical resistance under the influence of temperature, pressure, and mass. Strain-hardening concrete composite mix…
View article: Comparative Evaluation of Flexural Toughness of Steel Fiber-Reinforced Concrete Beams
Comparative Evaluation of Flexural Toughness of Steel Fiber-Reinforced Concrete Beams Open
Specifications are available to quantify flexural performance of steel-fiber reinforced concrete beams with several parameters. Each specification provides different results. This study comparatively evaluates existing flexural beam test s…
View article: Determination of Mechanical Properties of Sand-Coated Carbon Fiber Reinforced Polymer (CFRP) Rebar
Determination of Mechanical Properties of Sand-Coated Carbon Fiber Reinforced Polymer (CFRP) Rebar Open
This experimental study investigates the fundamental mechanical characteristics of the carbon fiber-reinforced polymer (CFRP) bars, including the tensile strength, compressive strength, shear strength, and modulus of elasticity of the CFRP…
View article: Development and Investigation of Repair Self-Sensing Composites Using S-CNT
Development and Investigation of Repair Self-Sensing Composites Using S-CNT Open
This study analyzed the mechanical and electrical characteristics of repair self-sensing composites. In order to ensure homogeneous dispersion of carbon nanotubes (CNTs) in the repair mortar, porous powder was impregnated with the liquid M…
View article: Flexural Behavior Characteristics of Steel Tubes Filled with SFRCCs Incorporating Recycled Materials
Flexural Behavior Characteristics of Steel Tubes Filled with SFRCCs Incorporating Recycled Materials Open
This study deals with the effect of fly ash and recycled sand on the flexural behavior of SFRCCs (steel fiber-reinforced cementitious composites)-filled steel tubes. As a result of the compressive test, the elastic modulus was reduced by t…
View article: Mechanisms of high frost scaling resistance of SHCC
Mechanisms of high frost scaling resistance of SHCC Open
This study aimed at evaluating the scaling resistance of strain-hardening cement-based composite (SHCC) exposed to freezing and thawing cycles. RILEM-CDF test was conducted to clarify which parameters of the composition of SHCC have an imp…
View article: Shear Strengthening of High Strength Concrete Beams That Contain Hooked-End Steel Fiber
Shear Strengthening of High Strength Concrete Beams That Contain Hooked-End Steel Fiber Open
Steel fiber has been used successfully in concrete mixtures to control volumetric changes, including shrinkage. However, the feasibility of the use of steel fiber has been restricted to nonstructural construction, such as ‘slab on ground’.…
View article: Influence of CNT Incorporation on the Carbonation of Conductive Cement Mortar
Influence of CNT Incorporation on the Carbonation of Conductive Cement Mortar Open
This study analyzed the influence of carbon nanotubes (CNTs) on the carbonation conductive cementitious composites. Two powder types of CNT, multi-walled and single-wall CNTs, were employed to give the cement mortar the conductivity, and f…
View article: Strain Transfer of Fiber Bragg Grating Sensor Externally Bonded to FRP Strip for Structural Monitoring after Reinforcement
Strain Transfer of Fiber Bragg Grating Sensor Externally Bonded to FRP Strip for Structural Monitoring after Reinforcement Open
To date, a method of attaching a FRP (fiber-reinforced polymer) to concrete members with epoxy has been widely applied to increase the strength of the member. However, there are cases in which the adhesion of the epoxy deteriorates over ti…
View article: Steel Reinforcing Bar and Steel Fibers Content Effect on Tensile and Electrical Behaviors of Strain-Hardening Cement Composite (SHCC) with MWCNTs in Direct Tension
Steel Reinforcing Bar and Steel Fibers Content Effect on Tensile and Electrical Behaviors of Strain-Hardening Cement Composite (SHCC) with MWCNTs in Direct Tension Open
This research examines the influence of an embedded steel reinforcing bar and micro steel fibers on the tensile and electrical properties of polyethylene (PE) fibers reinforced cement composite dumbbell-shaped specimens with multi-walled c…
View article: Sulfuric Acid Resistance of CNT-Cementitious Composites
Sulfuric Acid Resistance of CNT-Cementitious Composites Open
This study analyzed changes in the durability characteristics of cement mortar incorporating carbon nanotube (CNT) and the electrical properties subjected to deterioration induced by sulfate attack. Powder types of multi-walled or single-w…
View article: Shear Behavior of a Reinforced Concrete Frame Retrofitted with a Hinged Steel Damping System
Shear Behavior of a Reinforced Concrete Frame Retrofitted with a Hinged Steel Damping System Open
The purpose of this study was to experimentally evaluate the effect of a hinged steel damping system on the shear behavior of a nonductile reinforced concrete frame with an opening. For the experimental test, a total of three full-scale re…
View article: Installation Technique of Fiber Optic Sensor into FRP Used as NSM Structural Strengthening System
Installation Technique of Fiber Optic Sensor into FRP Used as NSM Structural Strengthening System Open
Recently, it has become necessary to develop a monitoring technology that combines an FBG (fiber Bragg grating) sensor as a means for continuously monitoring whether the reinforcing effect of an FRP (fiber-reinforced polymer) is maintained…
View article: Hysteretic Response of Tilt-Up Concrete Precast Walls with Embedded Steel Plate Connections
Hysteretic Response of Tilt-Up Concrete Precast Walls with Embedded Steel Plate Connections Open
Many connection systems are available that can transfer tension and shear loads from a precast concrete wall panel to a floor slab. However, due to the insufficient anchor depth in relatively thin precast concrete panels, it is difficult t…
View article: Strain-Detecting properties of hybrid PE and steel fibers reinforced cement composite (Hy-FRCC) with Multi-Walled carbon nanotube (MWCNT) under repeated compression
Strain-Detecting properties of hybrid PE and steel fibers reinforced cement composite (Hy-FRCC) with Multi-Walled carbon nanotube (MWCNT) under repeated compression Open
This experimental research investigates the feasibility of using hybrid polyethylene (PE) and steel fibers reinforced cement composite (Hy-FRCC) with multi-walled carbon nanotube (MWCNT) as strain sensors. Smart construction material prese…
View article: Seismic Performance Assessments of RC Frame Structures Strengthened by External Precast Wall Panel
Seismic Performance Assessments of RC Frame Structures Strengthened by External Precast Wall Panel Open
In recent years, a variety of strengthening methods have been developed to improve the seismic performance of reinforced concrete (RC) frame structures with non-seismic details. In this regard, this study proposes a new type of seismic str…