Abstract

WENGLAS-LARA, Gilberto; DOMINGUEZ-MENDOZA, Sergio Adrián; BURILLO-MONTUFAR, Juan Carlos  and  CASTANEDA-AVILA, José. Asphalt mixtures made with limestone aggregate and addition of calcium oxide proved at service temperatures. Rev. cienc. tecnol. [online]. 2024, vol.7, n.4, e377.  Epub Mar 30, 2025. ISSN 2594-1925.  https://doi.org/10.37636/recit.v7n4e377.

Hydrated lime is a material widely used to improve the mechanical properties and durability of asphalt mixtures. On the other hand, the aggregate is essential in the performance of the surface layer of an asphalt pavement, so special attention must be given to its design, and its mineralogical origin must be considered. Furthermore, the use of low-cost additions to improve the properties of asphalt mixtures is a recurring activity, however, the effect depends on the type of aggregate. This research aims to evaluate the effect of the type of limestone and non-limestone aggregate, as well as the addition of calcium oxide in standard asphalt samples evaluated with the Marshall method and the simple compression test. The mixtures made with limestone material and 2 % lime presented better results in terms of stability, flow, and compressive strength. These results may be beneficial for the preparation of asphalt mixtures where there is an abundance and availability of limestone material.

Keywords : Asphalt; Type of aggregate; Hydrated lime; Asphalt modifier; Stability.

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