Engineering properties

This article presents a numerical investigation focusing on the temperature distribution of first-stage turbine rotor blades that do not feature internal cooling channels. The results indicate the regions of peak temperatures and evaluate rotor blade strength.

10p viengfa 28-10-2024 1 1   Download

The current study investigates the influences of using DP on the engineering properties of the modified SCM with the HVFA based supplementary cementitious binder. Particularly, the effect of slag with higher pozzolanic reactivity partially substituting fly ash on the properties of the modified SCM was preliminarily estimated, which has not been previously explored.

10p viyoko 01-10-2024 2 1   Download

This study investigated the mechanical properties of high-performance concrete using notched specimens. All flexural specimens had an identical geometry of 40×40×160 mm3 with a span length of 120 mm.

12p viyoko 01-10-2024 4 1   Download

This paper presents the experimental results of the viscosity and its influence of cement paste on both the segregation of the concrete mixture and the compressive strength of EPS-C. The research revealed that a viscosity of cement paste below 50 mPa.s results in segregation of the concrete mixture.

11p viyoko 01-10-2024 3 1   Download

In this study, raw rice husk and bottom ash are used as fine aggregates, while fly ash is used as a binder material in the production of environmentally friendly unfired building bricks. The effect of raw rice husk content on the properties of green building bricks is investigated.

11p vifilm 24-09-2024 6 1   Download

In this study, instrumented indentation testing was conducted at room temperature for the investigation of the effect of strain rate on the hardness and yield strength in the weld zone of a commonly used structural steel, SM520.

9p vifilm 24-09-2024 3 1   Download

In this study, a supervised learning ANFIS model was developed to predict the compressive strength of concrete at 28 days. Data used in training and testing model were collected from a previous study.

13p vifilm 24-09-2024 5 1   Download

In this paper, the continuous stiffness measurement (CSM) indentation is employed to investigate fatigue mechanical properties of structural steel under cyclic loading. For this purpose, several representative analytical approaches were introduced to estimate the basic mechanical properties including Young’s modulus and indentation hardness from the characteristics of the loading/unloading curves.

11p vifilm 24-09-2024 3 1   Download

In this paper, free vibration of bidirectional functionally graded sandwich (BFGSW) beams is studied by using a finite element formulation. The beams made from three distinct materials are composed of three layers, a homogeneous core and two bidirectional FGM face layers with material properties varying in both the thickness and longitudinal directions by power gradation laws.

15p vifilm 24-09-2024 2 1   Download

The main objectives of this research work are as follows: (i) to explore the sensitivity of macro, meso and micro fibers to tensile and compressive properties of SFCs, and (ii) to correlate the tensile strength to compressive strength of SFCs containing macro, meso and micro steel-smooth fibers.

12p vifilm 24-09-2024 4 1   Download

In this study, grid nanoindentation and statistical deconvolution analysis were applied into a developed Ultra-high performance concrete (UHPC) to broaden the understanding of the microstructure phases and their mechanical properties.

12p vifilm 24-09-2024 1 1   Download

Mechanical behaviour of bituminous mixtures is characterized by the great thermal sensitivity and the large viscous effects. This paper focuses on the linear viscoelastic (LVE) behaviour of bituminous mixtures that is considered for pavement design.

10p vifilm 24-09-2024 1 1   Download

This study also provides an environmentally friendly solution for recycling waste medical glass in construction materials. By the way, both the environmental pollution and the depletion of natural resources (natural aggregates) were limited effectively for the goal of sustainable development.

16p vifilm 24-09-2024 1 1   Download

Drying shrinkage is the main cause of early age cracking of concrete and mortar. A wide range of research has been conducted to reduce the drying shrinkage, including using fibres or chemical admixtures. This paper investigated the effect of shrinkage reducing admixture on the flexural strength, compressive strength, drying shrinkage, water absorption and porosity of mortar.

13p vifilm 24-09-2024 2 1   Download

Acoustic properties of foams, such as macroscopic transports and sound absorption, are significantly influenced by their local morphology. The present paper develops a polynomial chaos expansion (PCE)-based surrogate model for characterizing the microstructure-properties relationships of acoustic monodisperse foams.

14p vifilm 24-09-2024 2 1   Download

The present research aims to investigate the influence of the ratio of reinforced concrete layer height to total height (h/H) on the mechanical properties of functionally graded concrete (FGC) containing fly ash (Fa) and polypropylene (PP) fiber.

14p vifilm 24-09-2024 2 1   Download

In this paper, a simplified calculation method based on Russian design standard SP 468.1325800.2019 is introduced to determine the flexural strength of RC T-beams when exposed to ISO 834 standard fire.

13p vifilm 24-09-2024 4 1   Download

This paper briefly overviews experimental procedure and methods of self-healing studies; and the damage of concrete materials due to drying shrinkage. Microstructure observations such as SEM, ESEM are used as popular methods in self-healing researches; however, they are difficult to be carried out in case of 3D-cracks.

7p viyoko 24-09-2024 5 1   Download

The research in the field of cementitious materials has brought towards many non-traditional binder systems. One of these systems, a ternary binder composed of calcium aluminate cement (CAC), ordinary Portland cement (OPC), and calcium sulfate (C$Hx), called ettringite binder, offers a possibility of very rapid development in mechanical strength.

6p viyoko 24-09-2024 2 1   Download

This paper focuses on some microstructure characteristics of the ettringite binder based on a C12A7 rich cement and a hemihydrate at early age. Some important characteristics of this binder were found, such as: short setting time (about 40–50 minutes), rapid expansion just after initial setting time, rapid evolution of porosity and bound water during the first 5 hours of hydration.

7p viyoko 24-09-2024 3 1   Download