DefinePK

Abstract

The study aimed to find a model of sandy clay erosion rate stabilized with emulsion asphalt. The soil sample was collected from Manuju Village, Gowa Regency of South Sulawesi Province, Indonesia (E.1190 41.035’, S. 050 17.509’, + 269 m). The emulsion asphalt was collected from PT. Widya Sapta Colas. The test method was done by rain simulation using Rainfall Simulator. The research parameters comprise rain intensity (50 mm/hr; 65 mm/hr; 80 mm/hr), acclivity degrees (100; 200; 300), and emulsion asphalt volume (0 cc/m2; 60 cc/m2; 80 cc/m2; 100 cc/m2) with the length of storage 3 days. The model of analysis was dimension method. The analysis of results was descriptive quantitative from the regression and correlation parameters of erosion rate with rain intensity, slope degree, and emulsion asphalt volume. The results of the study indicate that the erosion rate increased exponentially in line with the increase of rain intensity and linearly by the increase of acclivity, but decrease exponentially by the increase of emulsion asphalt volume.