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https://doi.org/10.1186/s12951-015-0112-6

has been cited by the following article:

• TITLE: Zeta Potential of Aggregate and Dynamic Modulus of HMA Estimation Using Aggregate Silica Content

  AUTHORS: Mouhamed Lamine Chérif Aidara, Serigne Touba Thiam, Alan Carter

  KEYWORDS: Basalt of Diack, Quartzite of Bakel, Limestone of Bandia, Complex Modulus Test, Binder-Aggregate Adhesiveness

  JOURNAL NAME: Open Journal of Civil Engineering, Vol.13 No.1, March 8, 2023

  ABSTRACT: The mineralogical composition of an aggregate influences its adhesion with bitumen and therefore its dynamic modulus. However, few studies have been conducted on this aspect. One of the most used properties to describe the impact of aggregate on the adhesiveness phenomena is the zeta potential. In this study, the first mineralogical and chemical properties were considered through the percentage of silica in the rock source of aggregates and the electric aggregate particles charge zeta. Dynamic modulus values used for regression process are determined from complex modulus test on nine asphalt concretes mix designed with aggregate types (basalt of Diack, quartzite of Bakel and Limestone of Bandia). The results showed that aggregate with high percentage of silica have higher zeta potential than aggregate with low percentage of silica. The development of a zeta potential predictive model showed a strong sensitivity to silica. The results of the complex modulus tests showed that Hot Mixture Asphalt (HMA) mixed with aggregate containing high silica contents gave better results than those mixed with aggregates containing low percentage of silica. The dynamic modulus predictive models of HMA developed shows that it is the properties of bitumen that influence more. However, the effect of silica although low, is very marked at low temperatures and high frequencies.