A method to use local low performances aggregates in asphalt pavements – An Algerian case study

Akacem, Mustapha; Bouteldja, Mohamed; Cerezo, Véronique; Hachichi, Abdelkader

doi:10.1016/j.conbuildmat.2016.08.035

Cited by 13 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To improve the compactness, we opted for a correction of the particle size by substituting a fraction of (x %) of tuff by adding dune sand, with (x %) varying from 10 to 40. In order to find the optimum composition of the mixture, compaction and bearing tests were carried out on the different mixtures of tuffs and dune sands [24][25][26][27][28][29][30][31][32]. Simple compression tests at different ages were performed on specimens of different mixtures compacted at Modified Proctor Optimum (OPM).…”

Section: Optimal Formulationmentioning

confidence: 99%

Study of the Effect of Adding Dune Sand to Tuff in Saharan Road Construction

Akacem

Moulay

Abbou

et al. 2022

AJRESD

Self Cite

View full text Add to dashboard Cite

The south region of Algeria is characterized by a wide surface, a scattered population and a very small ratio of road length per habitant. To allow the development of agricultural, industrial and touristic activities between different cities in the south of Algeria, it is necessary to maintain and to develop the road infrastructure. However the development of these infrastructures necessitates the use of huge amount of certified aggregates from quarries which is not available in the vicinity of the need. For these raisons, in the framework of sustainable development, a strategy which consists in using local materials like fine sediments (dune sand) and other types of material is engaged. The materials constituting the road layers, until today, have been limited to certain so-called noble materials (gravel, aggregates, etc.), but these are being depleted as a result of the intensive exploitation and the scarcity of quality careers. Gypso-limestone encrustation tuffs, the most used materials in pavements (base course and base course) in the Saharan areas such as southern Algeria, have shown acceptable behavior for many years until these last days, when this type of material begins to present certain limits under the effect of the intensity of the traffic. In order to promote the abundant wind sands in these regions, we are interested in developing the dune sands in the pavement as a mixture with the tuffs. The present work presents a contribution to the study of the behavior of the tuff of the Adrar region (South of Algeria) alone and mixed with the sand dunes in different formulations. The aim is to evaluate the evolution of mechanical properties including resistance to simple compression, the ability to compaction and punching (RBC). The work also discusses the influence of the addition of cement in low levels on the performance of the mixture.

show abstract

Section: Optimal Formulationmentioning

confidence: 99%

Study of the Effect of Adding Dune Sand to Tuff in Saharan Road Construction

Akacem

Moulay

Abbou

et al. 2022

AJRESD

Self Cite

View full text Add to dashboard Cite

show abstract

“…The degree of polish of the specimens was then obtained by the British Pendulum device of the F-scale, and the method was recorded in BS EN 13036. The PSV coefficient is calculated by Equation (3) [46].…”

Section: Polished Stone Value Test (Psv)mentioning

confidence: 99%

Research Progress on Skid Resistance of Basic Oxygen Furnace (BOF) Slag Asphalt Mixtures

Xiong

Zhai

et al. 2020

Materials

View full text Add to dashboard Cite

In order to ensure the safety of traffic, asphalt pavement is commonly required to utilize aggregates with excellent anti-abrasion property. This results in the lack of high-quality aggregates. The incorporation of solid waste in the aggregates is regarded as a high potential alternative for solving this problem. Since its material properties, such as rough surface, high Polished Stone Value (PSV) and the excellent adhesion property of asphalt, Basic Oxygen Furnace (BOF) slag can effectively improve the skid resistance of asphalt mixtures. First, the material properties of BOF slag are reviewed in this study. Then, the skid resistance of asphalt mixtures and aggregates are commendably evaluated by the Polished Stone Value test, Wehner/Schulze Tester, Aachen Polishing Machine, British Pendulum Test and Sand Patch test. The physical and mechanical properties of BOF slag play a key role in asphalt mixtures. This review found that the skid resistance mechanism of the BOF slag asphalt mixture is governed by factors such as BOF slag properties, incorporation methods and gradation types. Finally, the economic and environmental benefits of BOF slag asphalt mixtures were discussed. In addition, the function of gas catalysis and the melting of ice and snow can be added to the BOF slag asphalt mixture for a cleaner development in engineering. Furthermore, the existing problems, research directions and corresponding measures in this field are directed towards more durable and functional asphalt pavement construction.

show abstract

“…The aim is to widen the use of abundant local materials in the Saharan regions and to achieve the best technical and economic choice for a road project. In the previous studies [16][17][18][19][20], the improvement of the physical and mechanical properties of the mixture of tuff and dune sand has been highlighted. Nevertheless, little effort has been made to consider the coupled hydric and mechanical behavior.…”

Section: Introductionmentioning

confidence: 99%