Erwin Oh
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View article: Assessment of ACR-PCR for rigid airport pavements: comparison with ACN-PCN system
Assessment of ACR-PCR for rigid airport pavements: comparison with ACN-PCN system Open
In 2022, the International Civil Aviation Organization (ICAO) introduced the Aircraft Classification Rating – Pavement Classification Rating (ACR-PCR) system, replacing the globally adopted Aircraft Classification Number – Pavement Classif…
View article: A Systematic Evaluation of the Empirical Relationships Between the Resilient Modulus and Permanent Deformation of Pavement Materials
A Systematic Evaluation of the Empirical Relationships Between the Resilient Modulus and Permanent Deformation of Pavement Materials Open
The resilient modulus (Mr) and permanent deformation of subgrade soils are key indicators for assessing pavement performance under repeated traffic loads. Although numerous studies have confirmed their importance in pavement design and per…
View article: Comparison between ACN–PCN and ACR–PCR for rigid airport pavement with case study
Comparison between ACN–PCN and ACR–PCR for rigid airport pavement with case study Open
This technical note analyses the new Aircraft Classification Rating–Pavement Classification Rating (ACR–PCR) system with a case study. The literatures and case studies showed that anomalies exist between results of pavement structural eval…
View article: Damage evolution of surrounding sandstone rock under charging–discharging cyclic loading in the natural gas storage of abandoned mines based on the discrete element method
Damage evolution of surrounding sandstone rock under charging–discharging cyclic loading in the natural gas storage of abandoned mines based on the discrete element method Open
Gas storage in abandoned mines is one way to reuse waste space resources. The surrounding rock of gas storage reservoirs in underground roadways undergoes damage and deformation under the cyclic loading of gas charging and discharging, whi…
View article: Parametric Study of Lateral Load on Helical Pipe Piles in Clay
Parametric Study of Lateral Load on Helical Pipe Piles in Clay Open
In the past decades, as the world has placed emphasis on green energy, solar energy has become a favorable option. Different piled foundations have been designed to strengthen the structure supporting the solar panels. These piled foundati…
View article: Estimating Unconfined Compression Strength of Fly Ash and Cement Stabilised Clayey Soil using Artificial intelligence Techniques
Estimating Unconfined Compression Strength of Fly Ash and Cement Stabilised Clayey Soil using Artificial intelligence Techniques Open
The study aims to develop proposed predictive formulas for determining the unconfined compression strength (UCS) of fly ash and cement stabilised clayey soil based on Multi-Gene Genetic Programming (MGGP) and Artificial Neural Network (ANN…
View article: Key Themes of Build-to-Rent: Developing a Conceptual Framework for Achieving Successful Developments through a Systematic Literature Review
Key Themes of Build-to-Rent: Developing a Conceptual Framework for Achieving Successful Developments through a Systematic Literature Review Open
There is currently a pressing need for rental housing to be built and the Build-to-Rent (BTR) market is growing to address such housing demands. Existing research focuses on the financial and planning aspects of existing BTR markets. Howev…
View article: Runway groove closure prediction modelling by gene expression programming (GEP)
Runway groove closure prediction modelling by gene expression programming (GEP) Open
Grooving on the runway is proven to improve frictional braking resistance and reduce the risk of hydroplaning during wet weather and maintain skid-resistant surfaces. Nonetheless, the runway grooves area deteriorates over time, and this gr…
View article: Mineralogical and Microstructural Characterization of Cement-Stabilized Soft Soils Based on Quantitative Analyses
Mineralogical and Microstructural Characterization of Cement-Stabilized Soft Soils Based on Quantitative Analyses Open
The effects of cement dosage (percentage by dry soil weight) and initial moisture content (wo) on cement stabilized soft estuarine clay were investigated by effective integration of multi-quantitative analyses, including quantitative X-ray…
View article: Historical investigation: The importance of process over product in the historical discipline
Historical investigation: The importance of process over product in the historical discipline Open
Since its inception in 2014, Historical Investigation (HI) has been an integral part of the lower secondary history syllabus. However, some history educators have found the process to be extremely tedious and many would rather opt for dire…
View article: Parametric Study of Lateral Loaded Blade Pile in Clay
Parametric Study of Lateral Loaded Blade Pile in Clay Open
The study of the mechanical properties between the pile and soil is limited when an enlarged head is added at the bottom of the pile foundation, which acts as anchor stabilization. This study investigates the blade pile foundation used in …
View article: Validation of Analytical Solutions for Predicting Drilled Pile Behaviour under Bi-Directional Static Load Tests
Validation of Analytical Solutions for Predicting Drilled Pile Behaviour under Bi-Directional Static Load Tests Open
A bi-directional static load test (BDSLT) is one of the most effective methods for accurately estimating pile bearing capacity, in which the test pile is divided into two portions by activating the single-loading device welded along the pi…
View article: Drivers towards Adopting Modular Integrated Construction for Affordable Sustainable Housing: A Total Interpretive Structural Modelling (TISM) Method
Drivers towards Adopting Modular Integrated Construction for Affordable Sustainable Housing: A Total Interpretive Structural Modelling (TISM) Method Open
This study features the development of a framework to identify drivers towards increasing adoption of modular integrated construction (MiC) methods for affordable sustainable housing (ASH). The rise of offsite construction (OSC) techniques…
View article: A New Load-Transfer Factor to the Slipping Analytical Formulation in Axially Loaded Piles
A New Load-Transfer Factor to the Slipping Analytical Formulation in Axially Loaded Piles Open
The load-transfer factor (ζ) in the concentric cylinder approach is often used in analytical formulation in axially loaded piles. The factor is a constant value (in a given pile slenderness ratio and soil condition) devised under the elast…
View article: Sustainable cementitious blends for strength enhancement of dredged mud in Queensland, Australia
Sustainable cementitious blends for strength enhancement of dredged mud in Queensland, Australia Open
Cement is commonly used as a stabilisation material in soft soil stabilisation. However, the use of cement can cause environmental issues, as the production of cement results in high emission of carbon dioxide (CO 2 ). Hence, it is essenti…
View article: Effects of binder types and other significant variables on the unconfined compressive strength of chemical-stabilized clayey soil using gene-expression programming
Effects of binder types and other significant variables on the unconfined compressive strength of chemical-stabilized clayey soil using gene-expression programming Open
Soil stabilization is an in situ soil treatment in which soils are mixed with cementitious or other chemical stabilizing agents. Determining the unconfined compressive strength (UCS) of stabilized soil is a principal task in the design and…
View article: Latest Advances in Finite Element Modelling and Model Updating of Cable-Stayed Bridges
Latest Advances in Finite Element Modelling and Model Updating of Cable-Stayed Bridges Open
As important links in the transport infrastructure system, cable-stayed bridges are among the most popular candidates for implementing structural health monitoring (SHM) technology. The primary aim of SHM for these bridges is to ensure the…
View article: Gene-Expression Programming-Based Model for Estimating the Compressive Strength of Cement-Fly Ash Stabilized Soil and Parametric Study
Gene-Expression Programming-Based Model for Estimating the Compressive Strength of Cement-Fly Ash Stabilized Soil and Parametric Study Open
The study aims to develop a reliable model using gene-expression programming (GEP) technique for estimating the unconfined compressive strength (UCS) of soil stabilization by cement and fly ash. The model considered the effects of several …
View article: Strength and Microstructural Assessment of Reconstituted and Stabilised Soft Soils with Varying Silt Contents
Strength and Microstructural Assessment of Reconstituted and Stabilised Soft Soils with Varying Silt Contents Open
The study of the strength of reconstituted and stabilised soft soils is very important in geotechnical engineering. The soil particles, such as clay, sand, and silt play important roles in determining the behaviour of soils. The behaviour …