Optimization of dune sand-based mixture material for pavement design

Omar, Hassan Moulay; Mekerta, Belkacem; Jarno, Armelle; Imanzadeh, S.; Alem, Abdellah; Taïbi, Saïd

doi:10.1080/19648189.2021.1877827

Cited by 9 publications

(4 citation statements)

References 44 publications

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“…For some others applications, sands are treated with a special process. Many studies have investigated the aeolian sands to several targets as, geotechnical characterization [4], operating in pavement and concrete [5,6], and soil reinforcement with sands [7,8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Grain Size and Distribution on Mechanical Behavior of Dune Sand

Boudia

Berga

2021

Civ Eng J

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Sand is a major component of soils. It is widely used in manufacturing and construction. In geomechanics, one characterizes sand according to various aims. This paper investigates, for local sands, the effect of grain size and granular distribution on the mechanical behavior in terms of strength and stress-strain relationship. For this purpose, dune sands of the great Occidental Erg, from Algeria, are analyzed, according to the Mohr-Coulomb criterion. The study uses three kinds of sands. Every kind is divided into three sizes classes. Then, the experimental program conducts a set of direct shear tests, under various vertical stresses, using the small shear box (60 × 60 mm). The results show that the particle size and distribution have a direct effect on the mechanical behavior of the dune sand. Then, the dominant size class governs the natural sand behavior. Moreover, the peak shear strength increases as particle size increases. This indicates that there is an increase in peak friction angle with the increase of particles size and the sands consider as a purely cohesionless material. In addition, the experimental analysis shows that density and confinement stress is not sufficient to interpret the mechanical behavior. Indeed, mineralogy and surface state can influence the shear strength. These conclusions lead to the relevance of the sand genesis and the importance of the local materials thematic. Doi: 10.28991/cej-2021-03091730 Full Text: PDF

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Section: Introductionmentioning

confidence: 99%

Effect of Grain Size and Distribution on Mechanical Behavior of Dune Sand

Boudia

Berga

2021

Civ Eng J

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“…The ndings in the literature (Guettala et al, 2011;Gueddouda et al, 2011Moulay Omar et al, 2022 give us an idea of the various dune sands used, and what aids us in this study was understanding to what extent its quality was adapted to the target sands through the mineral and chemical composition of the sands previously used.…”

Section: Types Of Natural Sandsmentioning

confidence: 99%

“…61%), was mechanically crushed using a ball mill to a neness of about 4000 cm2/g (95%) exceeding an opening size of 45 m, to investigate the combined in uence of dune sand and solar steaming on the properties of concrete.In a case study of a technique for bituminous pavements, low-performance local aggregates were used in Algeria. It was originally used in the Saharan region of Adrar, where the inclusion of dune sand, whose chemical study showed that silica (96.17%) was its principal component, allowed for the maintenance of a level of adhesion after polishing(Akacem et al, 2016;Moulay Omar et al, 2022). Another researcher was interested to the method of treating dune sands that included silica (93.56%).…”

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confidence: 99%

Determining the characteristics of dune sand used in the building of different sites for the desert environment.

Abdeldjalil¹,

Akacem²

2023

Preprint

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In earlier research, it was found that the characteristics of all types of natural sands must be identified in order to know the extent to which they can be used in the desired field. This study is based on the identification of the physical and chemical characteristics of 24 dune sands located in southwest Timimoun and Adrar The majority of the dunes are classified as particles sands. Sand has been used as a building material since antiquity, especially in Saharan regions where dunes are present. According to sand equivalence tests, all sands are extremely clean, which is confirmed by the fineness modulus of the sand. The chemical properties of the different dune sands were analyzed in the laboratory. The chemical analysis showed that the dune sands of these regions are siliceous sands; the lowest dose of siliceous component is 84%, while the maximum concentration of limestone is 9.55%. The sulfate content does not exceed 1.15 meq/l, which confirms the classification of dune sands as inert material. The use of these sands as raw materials in industry is therefore closely controlled. Moreover, this encourages us to further study these sands and use them as granular construction materials.

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“…Some studies have provided methods to design and optimize local materials [11][12][13]. The results obtained by Moulay Omar et al [14] show that the design of experiments can be a useful tool to optimize mixture formulations for Saharan pavements. Other studies were based on mixture techniques and using different kinds of binders.…”

Section: Introductionmentioning

confidence: 99%

Co-valorization of Tuff and Sandy Residues in Roads Construction

et al. 2022

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In recent years, the use of local materials in pavements has developed to compensate for the lack of normalized standard materials in the Algerian arid regions. The main objective of this research is to assess the co-valorization of two local materials to design a road material with satisfactory characteristics. In this context, the use of tuff in combination with sand residues is explored. The evolution of the characteristics of tuffs mixed with sand residues according to percentages ranging from 0% to 50% is highlighted. The used materials were subjected to physical and mechanical tests. Then, a series of mechanical tests were carried out on mixed samples compacted at the optimal characteristics that were deduced from the modified Proctor test. The obtained results highlight the existence of an optimal formulation composed of 70% tuff and 30% sandy residues, which presented an unconfined compressive strength (UCS) of 5.16 MPs and a CBR index (CBRI) of 42.6 %. Moreover, the results show clearly the evolution of the measured characteristics with time (drying) and without the addition of binders. The possibility of the use of studied mixtures in pavements has been verified regarding the recommendations in use (CTTP 2001) and the Saharan Road Technique (SRT). Doi: 10.28991/CEJ-2022-08-05-013 Full Text: PDF

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Optimization of dune sand-based mixture material for pavement design

Cited by 9 publications

References 44 publications

Effect of Grain Size and Distribution on Mechanical Behavior of Dune Sand

Effect of Grain Size and Distribution on Mechanical Behavior of Dune Sand

Determining the characteristics of dune sand used in the building of different sites for the desert environment.

Co-valorization of Tuff and Sandy Residues in Roads Construction

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