Construction methods

This study also contributes to reducing environmental pollution caused by plastic and glass waste as well as current construction brick production methods. The results show that the bulk density, compressive strength, and bending strength of brick samples made from PET plastic and glass waste are higher than those of burnt clay brick samples, while water absorption is much smaller than that of burnt clay brick samples.

8p viengfa 28-10-2024 0 0   Download

The main method of this article is to evaluate the overall overview of smart urban planning and management, practicesand guidance for smart urban development in Vietnam, study the management of smart urban planning through the GIS systems of some countries in the world and draw lessons for Vietnam.

7p vibecca 01-10-2024 3 1   Download

The results of using machine learning via genetic programming (GP) to automatically generate novel effective length factor formula in accordance with AISC standard are presented in this article. The data points obtained from applying the numerical method equation solving for the transcendental equation for the effective length of the braced frame were fed into the machine learning algorithm.

5p vibecca 01-10-2024 3 1   Download

In this paper, a Convolutional Neural Network (CNN) method is employed to classify the crack/noncrack aerial images captured on the surface of concrete structures. The CNN model was trained and validated using the available experimental data of 4000 previously published images.

4p vibecca 01-10-2024 1 1   Download

This paper presents experimental and numerical investigations to assess the relative fire structural resistance of thermo-mechanically compressed (or densified) spruce wood. The simulated thermal profiles, the mass loss as well as the charring depths were compared to the experimented results showing a fairly good agreement.

5p vibecca 01-10-2024 0 0   Download

This study investigates the impact of roller compaction-induced vibration on the building structure of Ring road No.2 in Hanoi, Vietnam. The finite element method (Plaxis 2D) was applied to evaluate the impact of vibration on surrounding structures.

9p vibecca 01-10-2024 0 0   Download

Wood, an environmentally friendly construction material, is characterized by a critical attribute that significantly influences its mechanical properties and durability: its moisture absorption behavior. This study expands upon an existing one-dimensional model to develop an innovative two-dimensional numerical framework for simulating moisture propagation within wood.

15p vibecca 01-10-2024 2 0   Download

This work is devoted to conducting a new study for global dynamics and numerical simulation of a discrete-time computer virus propagation model, which was constructed in our recent work. By utilizing well-known results on asymptotic stability of discrete-time dynamical systems, we establish the global asymptotic stability of a unique viral equilibrium point, whereas only its local asymptotic stability was previously analyzed.

8p viyoko 01-10-2024 6 1   Download

The paper presents the results of an analysis of the decrease in cryptographic strength of the most common symmetric ciphers, taking into account the development of cryptanalytic methods. The vector of the threat to the reduction of information confidentiality stored and processed in information systems in the long term has been determined.

7p viyoko 01-10-2024 4 1   Download

This article presents a comprehensive analysis of Denisenko's method for constructing quantum circuits for S-boxes without using ancilla qubits. We elaborate on this methodology in terms of practical aspects that can be applied to S-boxes or permutations of arbitrary sizes.

14p viyoko 01-10-2024 4 1   Download

This work aims to study the crack pattern in masonry-like structures by a simplified description of the medium using a variational damage model. In literature, when modeling fractures in masonry structures, capturing both fracture types, cracks in units, and cracks at the interface simultaneously, usually requires a complicated scheme.

12p viyoko 01-10-2024 1 1   Download

The research "Solving constrained optimization tasks in civil engineering using εDifferential Evolution developed with Visual C#. NET" work aims at constructing an evolutionary algorithm based approach for solving complex constrained optimization tasks. The  -Differential Evolution (  -DE) proposed by Takahama, et al. [1], is selected as the employed evolutionary approach. The  -DE has been proven to be capable optimizer for tackling sophisticated problems in various engineering field. In this study, this optimization method is developed in Visual C#.

5p xuanphongdacy09 29-09-2024 1 1   Download

Designing cantilever retaining walls is an important task in various construction projects. The study "Optimizing cantilever retaining wall design using feasibility rule-based evolutionary algorithm developed with Visual C# .NET" aims at constructing an evolutionary-algorithm-based cantilever retaining wall design approach. Differential Evolution (DE) and the feasibility rule-based constraint-handling (FRBCH) method are integrated to achieve the research objective. A DE based software program incorporating FRBCH has been developed with Visual C# .NET to facilitate its implementation.

6p xuanphongdacy09 29-09-2024 2 1   Download

In this study, reduced graphene oxide (rGO) incorporated on NdFeO3 (NFO/rGO) nanocomposite was successfully synthesized by using a facile hydrothermal method for photo-Fenton degradation of phenol in oily wastewater.

6p vikwong 29-09-2024 1 1   Download

Unexpected defects of concrete in a completed bored pile can arise during the construction stage. Therefore, post-construction testing of bored pile concrete is an important part of the design and construction process. The Cross-hole Sonic Logging (CSL) method has been the most widely used to examine the concrete quality.

11p vifilm 24-09-2024 3 1   Download

This paper first briefly introduces principles, construction procedures and quality control techniques of an innovative CDM method that can create head-enlarged column, named as Point Foundation (PF).

14p vifilm 24-09-2024 2 1   Download

This paper aims to present thermo-electrical free vibration characteristics of functionally graded material (FGM) sandwich beam placed on the two-parameter elastic foundation. The beam is constructed of a foam core, two middle FGM layers, and two outer piezoelectric layers.

14p vifilm 24-09-2024 2 1   Download

This study introduces a novel integrated system that utilizes advanced computational models to assess the NIOSH Lifting Index in real-time, offering a significant improvement over traditional ergonomic assessment methods.

17p vifaye 20-09-2024 3 1   Download

This study seeks to propose a method to automatically assess unsafe postures of lifting and carrying heavy objects by combining the RTMPose deep learning model to detect people from videos and a convolutional neural network (CNN) model to automatically extract, evaluate and classify the worker’s posture skeleton frames into two states “safe posture” and “unsafe posture”.

12p vifaye 20-09-2024 3 1   Download

This study evaluates the effectiveness of using crushed construction and demolition waste as reactive media for applying in Permeable Reactive Barriers to treat contaminated groundwater by landfill leachate. Modern analytical methods such as SEM and EDX were used to analyze the physicochemical properties of crushed demolition waste, demonstrating that the material has a porous structure on the surface that is suitable for the targeted heavy metal adsorption.

9p vifaye 20-09-2024 3 1   Download