Characterization of Dense-Graded Asphalt With the Cantabro Test

Abstract

Durability of dense-graded asphalt (DGA) is a key issue with regards to long term pavement performance. There is a need for a practical and implementable test to estimate these parameters. Previous research has suggested that the Cantabro abrasion loss test has potential for this application. Both the development of the Cantabro method and its conventional application to open-graded friction course (OGFC) mixtures are reviewed. A four component research approach was undertaken to evaluate suitability of the Cantabro test for DGA mixtures that included testing of 438 specimens from 69 different mixtures. First, sensitivity of the test was assessed using a large range of typical Mississippi DGA mixtures. Second, variability of the test was measured by evaluating data sets with thirty replicates. Third, the effects of oven conditioning protocols were measured. Fourth, the effects of varying reclaimed asphalt pavement (RAP) contents were measured for warm-mix asphalt (WMA). The overall recommendation from the research was that the Cantabro test be given serious consideration for use as a durability measurement tool for DGA mixtures.

Production, Construction, Properties, and Performance of a Test Road with High Reclaimed Asphalt Pavement Content

“…The variability data for mixtures 0% RAP, 10% RAP, and 40% RAP show that the coefficient of variation values for weight loss were 14.0%, 14.3%, and 15.3%, respectively. These test results were in good agreement with those presented by other researchers (18). On the basis of analysis of variance, the differences in weight loss were not statistically significant across the different asphalt mixtures.…”

Mechanical Performance of Gilsonite Modified Asphalt Mixture Containing Recycled Concrete Aggregate

“…The Cantabro test is broadly used to characterized open-graded type asphalt mixes. However, during the latest years, it has been used to provide information regarding aspects associated with durability in dense-graded type asphalt mixes [85,86]. The percent of weight loss (Cantabro loss (CL)) was calculated by applying 500 cycles in the "Los Angeles machine" (without steel spheres).…”

Evaluación de una mezcla de concreto asfáltico con incorporación de agregados reciclados de concreto

“…La prueba de pérdida por abrasión de Cántabro se desarrolló como una medida relativa de la resistencia a la desintegración (por ejemplo, raveling) de mezclas abiertas. Sin embargo, para el caso de mezclas densas tipo MDC, se puede utilizar para evaluar la durabilidad y propiedades de cohesión [21], [22]. Como resultado se presentó el promedio de tres briquetas y su respectiva desviación estándar (σ).…”