Hardened and transfer properties of self-compacting concretes containing pre-coated rubber aggregates with crushed dune sand

Zaouai, Said; Tafraoui, Ahmed; Makani, Abdelkadir; Benmerioul, Farid

doi:10.1007/s42464-019-00030-x

Cited by 13 publications

(10 citation statements)

References 22 publications

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“…Second, geomechanical engineering uses directly the results in the design of geotechnical structures in various works of the district. In addition, several studies have been concerned with the use of the dune sand as a stabilization addition of expansive clay [26] and in high performance-high strength concrete manufacturing [27]. Also, the determination of the mechanical behaviour and associated parameters acts as data entries in numerical modelling of geotechnical problems [28].…”

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 previous studies have shown that the mechanical properties of asphalt mixtures produced by dry processes are strongly influenced by the percentage of rubber content [72]. The mechanical properties of treated CR granules are better than those of the mixes produced using untreated CR [73]. CR-modified asphalt mixture has lower resilient modulus, and this results in a thicker layer compared to conventional asphalt mixture when the binding content is increased by 10-20% [74].…”

Section: Dry Processmentioning

confidence: 99%

A review of the feasibility of using crumb rubber derived from end-of-life tire as asphalt binder modifier

Milad

Ahmeda²,

Taib

et al. 2020

J Rubber Res

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The use of recycled crumb rubber (CR) in asphalt pavements could be an essential step towards ensuring a more sustainable future in addition to opening a new investment opportunity for global investors. Asphalt modifiers have the ability to enhance the performance of flexible pavements and contribute towards ensuring a more sustainable environment. The utilization of CR produced from end-of-life tires (ELTs) as an asphalt modifier has been shown to enhance asphalt performance with regard to high-temperature rutting and low-temperature thermal cracking due to the remarkable characteristics of the CR. This paper presents the findings of previous studies, including the grinding of ELTs to obtain crumb rubber, the technology employed in the process, and the physical and mechanical properties of the asphalt modifiers. Even though the present study focuses on the application of hot-mix asphalt (HMA), there are other methods, for instance, warm-mix asphalt (WMA), reclaimed asphalt pavement (RAP), and porous asphalt, that used CR as a modifier or as an additive in asphalt binders. A review of the literature suggests that most CR have a good performance and are suitable for use in the top paving layer to reduce noise as well as for other applications.

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“…It is of wind origin, siliceous by nature and very clean. Its use in the formulation of concretes and mortars and even in the construction of roads becomes a current subject that attracts many researchers (Zaouai et al , 2020; Benabed, 2018; Daheur, 2018; Benmerioul et al ,2017; Belferrag, 2016; Maza et al , 2016; Mechti, 2013).…”

Section: Used Materialsmentioning

confidence: 99%

Comparative study of the effect of crushed dune sand and limestone fillers on mortar properties in aggressive environment

Logbi

Mani

Choungara

et al. 2021

WJE

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Purpose This paper aims to study the effect of mineral additions on the mortars’ physical, mechanical and durability properties. Two local mineral additions, considered inert, are chosen: limestone fillers from North-East of Algeria and natural dune sand from Algerian desert areas. Design/methodology/approach Two local additions are finely crushed to a fineness greater or equal to that of the used cement and incorporated into the mortars with predetermined rates; (0, 10%, 15% and 20%) compared to the cement weight to examine their effects on the mortars’ properties at different ages. Two conservation environments are chosen: freshwater as a neutral area and rising water table as an aggressive area to appreciate the effect of the two additions on physical and mechanical properties and durability. Findings The results showed the beneficial effect of these additions on compactness, mechanical resistance and durability toward the rising water table. The results have also allowed us to make an experimental comparison between the limestone addition which is commonly used in the Algerian cement industry and the dune sand, which is not yet well explored and exploited. Originality/value The added value of this study is the use of crushed dune sand which is a local addition of southern Algeria for improving the resistance of mortars and concrete toward the aggressiveness of rising water table which presents a major problem for the infrastructure of civil and public construction.

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Hardened and transfer properties of self-compacting concretes containing pre-coated rubber aggregates with crushed dune sand

Cited by 13 publications

References 22 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

A review of the feasibility of using crumb rubber derived from end-of-life tire as asphalt binder modifier

Comparative study of the effect of crushed dune sand and limestone fillers on mortar properties in aggressive environment

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