Tạp chí Khoa học và Công Nghệ Trường Đại học Xây dựng Miền Tây

Bìa

Editor — 2025-12-30

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Mục Lục

Editor — 2025-12-30

Contents

Robust fire resistance analysis of concrete for aviation structure safety using EUROCODE and ANSYS

Nguyen Phi Long — 2025-12-30

In the context of contemporary urban development, fire safety in public structures, particularly high-occupancy buildings, remains a paramount concern. The fire resistance of reinforced concrete (RC) frame structures, the primary load-bearing components, plays a pivotal role in ensuring life safety and mitigating property damage in the event of a fire. This research focuses on the application of advanced numerical simulation techniques, specifically utilizing ANSYS APDL software, to evaluate the fire resistance of RC frame structures in airport terminals conforming to EUROCODE standards. A detailed numerical model is constructed based on geometrical parameters, material properties, and realistic fire scenarios, enabling a thorough analysis of temperature distribution, stress, and deformation behavior of the structures under elevated temperatures. The findings not only validate the efficacy of ANSYS APDL in fire resistance assessment but also provide critical insights into the structural behavior of RC under fire conditions. Consequently, the research proposes optimized design solutions and engineering measures to enhance fire resistance, thereby ensuring the safety and operational continuity of airport terminals.

Vacuum preloading solution to shorten consolidation time of weak soil foundations under structures

Chu Thai Nam — 2025-12-30

This paper presents the mechanism, technical development, and practical applications of the vacuum preloading method in treating weak soil foundations. This method allows accelerating the consolidation process, significantly shortening construction time compared to traditional preloading. Studies and applications in many countries, including Vietnam, demonstrate the superior effectiveness of this technology. The paper also introduces recent improvements, including membrane-less techniques, combination of vacuum preloading with static loads, and numerical analysis applications.

Stability analysis for vertical breakwater foundation according to ASD and LRFD

Dang Van Phu — 2025-12-30

This paper analyzes the stability of breakwater foundations using two methods: the traditional allowable safety factor design (ASD) and the load factor and resistance factor method (LRFD), both based on reliability theory. Six vertical breakwater cross-sections were analyzed using the Bishop method to calculate the factor of safety (FS), with the basic load combination. Subsequently, the Monte Carlo simulation method was employed in reliability analysis to determine the load factors and resistance factors. All calculation steps are performed on the MATLAB platform. The analysis results show that the safety level of the stability of breakwater foundations using LRFD depends largely on the variation of the soil strength. When designing using LRFD with a target reliability index of 3.0, the design using ASD is safer than the LRFD design if the variation in soil strength is small. However, when the coefficient of variation of soil strength is great, the ASD approach is often less safe than the LRFD.

Challenges and Barriers to Green airport development in Vietnam: Assessment of current situation and Recommendations

Phan Thanh Minh — 2025-12-30

In the context of the global aviation industry facing intense pressure from commitments to reduce greenhouse gas emissions and the demand for sustainable development, the transition to green airport models in Vietnam has become more urgent than ever. However, this process is encountering significant challenges and barriers. This paper examines the primary obstacles to green airport development in Vietnam through a field survey conducted at 22 airports, focusing on issues related to legal frameworks, financial resources, management capacity, technical infrastructure, technology, and multi-stakeholder coordination mechanisms. The results show that Vietnam’s airport system currently meets only basic environmental compliance requirements, with a low and inconsistent level of integration of green solutions, particularly at smaller and regional airports. Based on these findings, the paper proposes several policy recommendations to address barriers and promote the green transition process, aiming for sustainable development and carbon neutrality by 2050.

Introducing the method of improving soft soil by combining prefabricated vertical drains with the vacuum preloading method

Dang T.T.H. — 2025-12-30

In the context of modern infrastructure development, addressing soft soil to ensure the durability and stability of construction projects has become critically important. In Vietnam, particularly in the Mekong Delta, soft soil with unstable geotechnical properties is widespread. An advanced and effective method for improving soft soil is the use of prefabricated vertical drains (PVD) combined with vacuum preloading. This paper provides a detailed overview of the method of treating soft soil using PVD in conjunction with vacuum pumping, covering theoretical foundations, construction procedures, and practical applications. Experimental results demonstrate that this method achieves over 90% consolidation, reduces settlement to below 20cm, and ensures the safety of structures in compliance with Vietnamese standards. Simulation models and field experiments also confirm that combining PVD with preloading and vacuum pumping not only enhances stability but also minimizes deformation and potential failures. This method is particularly suitable for projects in areas with extensive soft soil and high urban development demands, such as the Mekong Delta.

Application of Arcface and support vector machine in face recognition

Dang Thi Dung — 2025-12-30

Face recognition is one of the key domains of artificial intelligence (AI) and computer vision, widely applied in security, surveillance, and modern smart devices. In Vietnam, most existing systems are costly to deploy and have limited customization capabilities for practical needs. In this study, we propose a face recognition model that combines ArcFace for deep feature extraction and Support Vector Classification (SVC) for effective classification. The system is fully developed on the open- source Python platform, integrating OpenCV, NumPy, Scikit-learn, and a MySQL database for systematic user information management. Experiments conducted on 1,200 images from three user classes under diverse environmental conditions demonstrate that the model achieves an accuracy of 73.3%. In addition, the system successfully implements real-time recognition with detailed user information display. The results confirm the feasibility of building an efficient and low-cost face recognition system, well-suited to application conditions in Vietnam.

Developing Urban Agricultural Spaces: Opportunities and Challenges in Mekong Delta Cities

Nguyen Thi Hong Cuc — 2025-12-30

Urban agriculture (UA) is emerging as a key approach for developing sustainable, climate-resilient cities. The Mekong Delta, Vietnam’s largest agricultural hub, offers favorable natural, cultural, and policy conditions for integrating agricultural spaces into urban areas. This study analyzes the theoretical foundations, examines representative UA models, and assesses their applicability in cities across the Mekong Delta. Results indicate the region benefits from land availability, favorable agroecological conditions, a workforce rooted in agricultural traditions, and a distinctive cultural identity. However, it faces significant challenges, including climate-change impacts, urbanization pressures, a shortage of skilled personnel, and fragmented policy frameworks. These findings provide an evidence base to guide the design and selection of context-appropriate strategies for developing urban agricultural spaces in the Mekong Delta.

Effect of Duyen Hai 3 thermal power plant fly ash on the compressive strength development of cement mortar over time

Le Hoai Bao — 2025-12-30

This study investigates the effect of fly ash (FA) from Duyen Hai 3 Thermal Power Plant on the compressive strength development of cement mortar over time. Mortar mixes were prepared with FA replacing cement at 0%, 5%, 10%, 15%, and 20% by weight. Compressive strength was evaluated at 3, 7, 28, and 56 days of curing. At 3 and 7 days, the mix containing 5% FA achieved the highest strength, while replacement levels of ≥10% led to reduced early strength. At 28 and 56 days, the 10% FA mix attained the highest strength, surpassing the control mix, attributed to the effective pozzolanic reaction. The 15% replacement level showed strength comparable to the control, whereas 20% replacement resulted in significant strength reduction at all ages. Duyen Hai 3 FA, characterized by high reactive oxide content, appropriate fineness, and low loss on ignition, contributed to the formation of additional C-S-H gel and pore filling in the mortar matrix.

The influence of tie beams on the reinforced concrete frame structural model

Truong Quoc Khang — 2025-12-30

The separation of “tie” beams from the frame model for independent calculation is commonly applied in reinforced concrete (RC) structural design coursework and even in graduation projects for civil engineering students. However, this approach does not accurately reflect the actual structural behavior of the building. The author recognizes that the impact of tie beams on the RC frame structure can be analyzed through three different models: (1) considering tie beams as simply supported beams and analyzing them separately, (2) modeling them as fixed-end beams, (3) integrating tie beams into the RC frame model for simultaneous analysis. This study employs Etabs and NConc (developed by NCal Solution) to perform structural analysis, reinforcement design, and result evaluation. From this analysis, the study aims to assess the appropriateness of modeling tie beams as part of the RC frame structure, ensuring consistency with both structural design calculations and actual construction practices where tie beams are present.

Check the bearing capacity of reinforced concrete columns using interactive diagrams according to TCVN 5574:2018, compare the results with British standard BS 8110:1997

Thach Som So Hoach — 2025-12-30

In the Etabs structural analysis software, there is a program to build interaction diagrams of columns and walls with any cross-section according to the standards of the most advanced countries: BS 8110:1997, ACI 318-2002, Eurocode 2 -2004, etc. Etabs allows model optimization and easy data entry, editing, and copying; execution time is significantly reduced compared to other calculation programs, especially for accurate, correct, and fast results. In this article, the author builds interaction diagrams of reinforced concrete biaxially eccentrically loaded members with square and rectangular cross-sections according to TCVN 5574:2018 and interaction diagrams on Etabs according to British standard BS 8110:1997 (with material parameter conversion between the two standards TCVN 5574:2018 and BS 8110:1997). It is found that the results of the column interaction diagram between the two standards have insignificant deviation values.

Research on using brick and colored glass wall waste to make decorative ventilation bricks

Nguyen Le Duy Dang — 2025-12-30

This study proposes a solution to recycle brick and colored glass waste to produce decorative ventilation bricks, in order to reduce environmental pollution and save natural sand resources. Experimental samples were designed with the replacement ratio of natural sand with waste mixture (50% broken bricks + 50% colored glass) of 25%, 50% and 75%, respectively. The results showed that the 25% replacement sample achieved a compressive strength of 9.18 MPa and a flexural strength of 1.92 MPa after 28 days of curing, meeting the TCVN 3121-11:2022. Replacement ratios above 50% significantly reduce mechanical properties due to high porosity and poor bonding performance. These ventilation brick products have the potential for practical application in civil works, contributing to reducing 25% of raw material costs and 30% of construction waste landfilled. The study demonstrates the feasibility of using recycled materials in the production of environmentally friendly building materials.

Organize the schoolyard landscape to build a comprehensive and creative learning space

Huynh Thi Hong Thuy — 2025-12-30

The school is fundamentally an educational facility that provides learning spaces and environments for students under the guidance of instructors. In contemporary educational trends, learning is no longer confined to the classroom but extends to the school grounds, which serve as a setting for engaging outdoor classes. These spaces stimulate creativity and foster the holistic development of students. Through surveying, data collection, synthesis, and analysis, this paper analyzes the significance of school ground landscape organization and proposes design guidelines to optimize this space for the purpose of holistic education in primary schools.

Architectural and Artistic Value of Kien An Cung Pagoda, Sa Dec ward, Dong Thap province

Phan Tan Tho — 2025-12-30

This article examines the architecture and artistic value of Kien An Cung Pagoda in Sa Dec City, a recognized national historical and cultural monument. Built by the Fujianese Chinese community, the pagoda exemplifies traditional Chinese architectural styles, especially in wood and stone carving, ceramic inlay, and mural painting. Beyond being a sacred site, it serves as a center for moral education and cultural activity. The study explores the spatial layout, structural design, decorative systems, and the aesthetic-spiritual significance that the temple contributes to Vietnam’s traditional architectural heritage.

Bootrom solutions in computer lab management

Nguyen Hoang Phuong — 2025-12-30

This study comprehensively evaluates modern Bootrom solutions based on three key criteria: (1) operational performance, (2) cost efficiency and (3) practical applicability within Vietnam’s technological infrastructure. The research findings not only provide a holistic overview of Bootrom technology development trends but also propose optimized deployment models, particularly suitable for Vietnamese enterprises during the current digital transformation phase. Bootrom has introduced a novel approach to computer system management by replacing traditional physical hard drives with an intelligent centralized storage mechanism. Through this technology, workstations can operate reliably using virtual disks managed centrally from a server, connected via local area networks or the internet.