Compactability and mechanical properties of cold recycled mixes prepared with different nominal maximum sizes of RAP
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http://hdl.handle.net/2183/31007
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- CITEEC-CGM - Artigos [93]
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Compactability and mechanical properties of cold recycled mixes prepared with different nominal maximum sizes of RAPData
2022Cita bibliográfica
Orosa, P., Orozco, G., Carret, J. C., Carter, A., Pérez, I., Pasandín, A. R. (2022). Compactability and mechanical properties of cold recycled mixes prepared with different nominal maximum sizes of RAP. Construction and Building Materials, 339, 127689.
Resumo
[Abstract:] The use of cold recycled asphalt mixtures (CRM) has been soaring during recent years. Reclaimed Asphalt Pavement (RAP) is the main component of CRM, and despite the numerous studies on CRM, the impact of different RAP types has not been deeply studied. This study compares the volumetric and several mechanical properties of CRM prepared with RAP from two different sources and with various nominal maximum sizes (NMS). The mix design was fixed, and specimens were prepared using gyratory and impact compactors. Densities were measured before and after accelerated curing. Stiffness of CRM was investigated with Indirect Tensile Stiffness Modulus, tension–compression, and dynamic tests. Additionally, the cracking behavior was evaluated with Indirect Tensile Strength and Semi-Circular Bending tests. The particle size distribution was a key factor in the compactability of the CRMs studied. Together with temperature, the most influential factor on the studied mechanical properties was the air void content, while the differences in NMS showed no clear trends.
Palabras chave
Cold recycling
RAP
Gradation
Bitumen Emulsion
Gyratory compactor
Impact compactor
Indirect Tensile Strength (ITS)
Complex Modulus
Indirect Tensile Stiffness Modulus (ITSM)
Semi-Circular Bending test (SCB)
RAP
Gradation
Bitumen Emulsion
Gyratory compactor
Impact compactor
Indirect Tensile Strength (ITS)
Complex Modulus
Indirect Tensile Stiffness Modulus (ITSM)
Semi-Circular Bending test (SCB)
Descrición
Financiado para publicación en acceso aberto: Universidade da Coruña/CISUG
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Atribución-NoComercial-SinDerivadas 3.0 España