A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Implications of Local Materials Enhanced with Reclaimed Asphalt Pavement for Road Construction
This laboratory study aimed to assess the feasibility of tuff and reclaimed asphalt pavement (RAP) mixtures in road construction. The study included a comprehensive analysis of the geotechnical properties of the tuff-RAP mixture, such as the material’s particle size distribution, density, compaction behavior, shear strength, and California bearing ratio (CBR). It was observed that the overall behavior of the tuff-RAP samples increased with increasing RAP content. Direct shear test results indicated that the incorporation of RAP into tuff significantly enhanced the material’s shear strength. The asphalt-coated aggregates in RAP contributed to an increase in cohesion by creating a binding effect between particles. However, as the RAP content increased, a reduction in the internal friction angle was observed. Among the tested mixtures, the addition of 30% RAP was identified as the optimal value for use in sub-base layers. This specific combination not only maximized the cohesion of the mixture but also yielded the highest CBR values, indicating superior load-bearing capacity and resistance to deformation. Empirical equations are proposed in this study to correlate the mechanical characteristics of tuff and RAP mixtures for use in road sub-base layer construction.
Implications of Local Materials Enhanced with Reclaimed Asphalt Pavement for Road Construction
This laboratory study aimed to assess the feasibility of tuff and reclaimed asphalt pavement (RAP) mixtures in road construction. The study included a comprehensive analysis of the geotechnical properties of the tuff-RAP mixture, such as the material’s particle size distribution, density, compaction behavior, shear strength, and California bearing ratio (CBR). It was observed that the overall behavior of the tuff-RAP samples increased with increasing RAP content. Direct shear test results indicated that the incorporation of RAP into tuff significantly enhanced the material’s shear strength. The asphalt-coated aggregates in RAP contributed to an increase in cohesion by creating a binding effect between particles. However, as the RAP content increased, a reduction in the internal friction angle was observed. Among the tested mixtures, the addition of 30% RAP was identified as the optimal value for use in sub-base layers. This specific combination not only maximized the cohesion of the mixture but also yielded the highest CBR values, indicating superior load-bearing capacity and resistance to deformation. Empirical equations are proposed in this study to correlate the mechanical characteristics of tuff and RAP mixtures for use in road sub-base layer construction.
Implications of Local Materials Enhanced with Reclaimed Asphalt Pavement for Road Construction
Transp. Infrastruct. Geotech.
Azaiez, Hamou (author) / Cherif Taiba, Abdellah (author) / Mahmoudi, Youcef (author) / Belkhatir, Mostefa (author)
2025-04-01
Article (Journal)
Electronic Resource
English
Implications of Local Materials Enhanced with Reclaimed Asphalt Pavement for Road Construction
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