Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Assessment and modelling of the mechanical strength of roller-compacted concrete incorporating recycled asphalt pavement
Integrating recycled asphalt pavement (RAP) into roller-compacted concrete (RCC) as a replacement for natural aggregates has recently emerged as a sustainable practice with significant environmental benefits. This study investigates the mechanical properties of RCC incorporating RAP aggregates, with a focus on developing a predictive model for its flexural and split tensile strengths. RCC mixtures with varying RAP content were developed and tested for compressive, split tensile, and flexural strengths. The results revealed a decline in composite performance with an increased RAP level. Nevertheless, mechanical strength met standard requirements for replacement rates of up to 60%. A new model was then developed, considering RAP rate alongside compressive strength, to predict the flexural and split tensile strengths of RCC. Existing models for conventional concrete were also evaluated for their applicability to RCC mixtures containing RAP. The proposed model demonstrated close alignment with experimental data from this study and other studies. It exhibited the lowest root mean square error, which confirms its accuracy in predicting the mechanical properties of RCC with RAP. This model provides a valuable tool for practitioners to estimate key parameters for designing pavement made with this composite.
Assessment and modelling of the mechanical strength of roller-compacted concrete incorporating recycled asphalt pavement
Integrating recycled asphalt pavement (RAP) into roller-compacted concrete (RCC) as a replacement for natural aggregates has recently emerged as a sustainable practice with significant environmental benefits. This study investigates the mechanical properties of RCC incorporating RAP aggregates, with a focus on developing a predictive model for its flexural and split tensile strengths. RCC mixtures with varying RAP content were developed and tested for compressive, split tensile, and flexural strengths. The results revealed a decline in composite performance with an increased RAP level. Nevertheless, mechanical strength met standard requirements for replacement rates of up to 60%. A new model was then developed, considering RAP rate alongside compressive strength, to predict the flexural and split tensile strengths of RCC. Existing models for conventional concrete were also evaluated for their applicability to RCC mixtures containing RAP. The proposed model demonstrated close alignment with experimental data from this study and other studies. It exhibited the lowest root mean square error, which confirms its accuracy in predicting the mechanical properties of RCC with RAP. This model provides a valuable tool for practitioners to estimate key parameters for designing pavement made with this composite.
Assessment and modelling of the mechanical strength of roller-compacted concrete incorporating recycled asphalt pavement
Boussetta, Ines (Autor:in) / El Euch Khay, Saloua (Autor:in)
European Journal of Environmental and Civil Engineering ; 29 ; 1244-1258
26.04.2025
15 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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