As the particle size of peanut shell powder decreased, the penetration, softening point, and ductility of the modified asphalt showed an increasing trend, while the dynamic viscosity gradually decreased.
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Peanut Shell Powder as a Sustainable Modifier and Its Influence on Self-Healing Properties of Asphalt.
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The sentences
The addition of peanut shell powder resulted in a decreasing trend in both R q and R max , indicating a reduction in the roughness of the asphalt microsurface and a smoother microsurface, consistent with the results from the 2D and 3D topography images.