An experimental study on the optimal compositions of ordinary concrete based on corrected dune sand—Case of granular range of 25 mm

Moulay-Ali, Abderrahmane; Abdeldjalil, Mhammed; Khelafi, H.

doi:10.1016/j.cscm.2021.e00521

Cited by 11 publications

(2 citation statements)

References 10 publications

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“…They demonstrated that adding dune sand to clay significantly improves the geotechnical properties. According to Moulay-Ali et al, (2021), the adjusted combination of 20% dune sand, 40% quarry sand, and 60% crushed sand gives the best mechanical resistance to concrete compression. Luo et al, (2013) revealed that the workability as well as durability of concrete incorporating extremely fine dune sand grains from the Australian desert were similar to river sand concrete.…”

Section: The Journal Of Engineering and Exact Sciences -Jcecmentioning

confidence: 99%

A comparative analysis of the microstructural and physicochemical properties of alluvial and dune sands from northeast Algerian Sahara

Hachem

Meftah²,

Bouaziz

2023

J. Eng. Exact Sci.

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This paper investigates the physical, chemical, and microstructural properties of two types of natural sand; alluvial sands and dune sand from the El-Oued region in the northeastern Algerian Sahara. Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), X-ray Fluorescence (XRF), Scanning electron microscopy (SEM/EDS), and granulometry analysis have been performed. The FTIR and XRD analysis prove that the alluvial sand and dune sand consist of high percentages of ?-quartz (SiO2), low amounts of calcite (CaCO3), and gypsum minerals (CaSO4;2H2O). The chemical analysis confirmed that both types of sand have a high silica (SiO2) ratio, reaching 80% for dune sand and 70% for alluvial sand, besides very low quantities of Al2O3, Fe2O3, and K2O oxides. CaO content was higher in alluvial sand than in dune sand. The shapes of alluvial sand grain samples ranged from angular to well-rounded. However, the dune sands have shapes ranging from sub-angular to well-rounded. However, the dune sand is poorly graded sand with a mean grain size of 250?m; whereas, the alluvial sand is well-graded sand with a mean grain size of 406?m. These findings demonstrate that alluvial and dune sands are mineralogically stable and chemically suitable for use as fine aggregates in construction. Also, these sands could be significant sources of quartz minerals.

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Section: The Journal Of Engineering and Exact Sciences -Jcecmentioning

confidence: 99%

A comparative analysis of the microstructural and physicochemical properties of alluvial and dune sands from northeast Algerian Sahara

Hachem

Meftah²,

Bouaziz

2023

J. Eng. Exact Sci.

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“…Concrete is a more fundamental material in the construction sector due to its exceptional mechanical properties, which make it appropriate for a wide range of applications, including foundations, roads, buildings, and bridges. (Gagg, 2014;Moulay-Ali et al, 2021). Proper curing of concrete is essential to achieve its maximum strength and longevity (Guimarães & Silva, 2021).…”

Section: Introductionmentioning

confidence: 99%

Impact of Curing Periods on the Evaluation of Thermal, Mechanical Properties, and Energy Consumption of Concrete Buildings

Talhaoui,

Fezzioui,

Benidir

2024

J. Eng. Exact Sci.

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This study examines the impact of the curing period on the thermal and mechanical properties of concrete and its subsequent effect on building energy consumption. The research methodology is divided into two parts: experimental and simulation. In the experimental section, concrete specimens were created using regular concrete with a dosage of cement of 350 Kg/m³, and curing periods were varied (without curing, 3, 7, 14, 21, and 28 days) to assess thermal conductivity, density, ultrasonic pulse velocity, and compressive strength at 28 days. The results indicated that compressive strength increased by 71% between uncured and 28-day cured specimens, ultrasound propagation speed increased by 15%, and thermal conductivity increased by 31% with longer curing periods. A simulation using TRNSYS software estimated the energy consumption of a reference building with varying concrete properties based on the curing period. The simulated building consisted of three rooms, a hall, and a kitchen, with double exterior walls of 25 cm thickness and interior walls of 10 cm thickness. The findings revealed that longer curing periods contributed to increased energy consumption in the building. This study provides valuable insights into the relationship between curing periods, concrete properties, and their effect on the energy efficiency of concrete buildings.

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Identification of dune sands used in building by their characteristics and a granular model for an arid environment

Abdeldjalil,

Bensekhria,

Akacem

2023

Asian J Civ Eng

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An experimental study on the optimal compositions of ordinary concrete based on corrected dune sand—Case of granular range of 25 mm

Cited by 11 publications

References 10 publications

A comparative analysis of the microstructural and physicochemical properties of alluvial and dune sands from northeast Algerian Sahara

A comparative analysis of the microstructural and physicochemical properties of alluvial and dune sands from northeast Algerian Sahara

Impact of Curing Periods on the Evaluation of Thermal, Mechanical Properties, and Energy Consumption of Concrete Buildings

Identification of dune sands used in building by their characteristics and a granular model for an arid environment

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An experimental study on the optimal compositions of ordinary concrete based on corrected dune sand—Case of granular range of 25 mm

Cited by 11 publications

References 10 publications

A comparative analysis of the microstructural and physicochemical properties of alluvial and dune sands from northeast Algerian Sahara

A comparative analysis of the microstructural and physicochemical properties of alluvial and dune sands from northeast Algerian Sahara

Impact of Curing Periods on the Evaluation of Thermal, Mechanical Properties, and Energy Consumption of Concrete Buildings

Identification of dune sands used in building by their characteristics and a granular model for an arid environment

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An experimental study on the optimal compositions of ordinary concrete based on corrected dune sand—Case of granular range of 25 mm