Análisis del efecto de la adición de emulsión asfáltica y cemento portland en suelos de subbase clase 3

Abstract

This study analyzed the effect that a granular material such as class 3 subbase has when adding Slow Break Cationic Asphalt Emulsion type CSS-1h and Portland Cement, with the objective of improving the bearing capacity of the subbase. Every engineering project is based on the soil, which is why it must comply with minimum parameters, resulting in the need to stabilize the soil. The analysis of the physical-mechanical properties of the granular material was carried out through laboratory tests, verifying that they meet the acceptance criteria of the MTOP for a class 3 subbase; The values obtained for maximum dry density, optimal humidity and CBR support capacity of the samples were analyzed by adding 1, 3, 5 and 8 percent of asphalt emulsion, determining the optimal percentage, the analysis of the values was repeated, but with optimal percentage of asphalt emulsion plus Portland cement percentages of 3, 6, 9 and 12 percent. With the results obtained, the design of flexible pavements was developed for the soil in its natural state as well as for the stabilized one, in order to analyze and contrast costs which are affected by the thicknesses of each layer that constitutes the structure of the pavement. Finally, the combination of 3 percent asphalt emulsion plus 5.7 percent Portland cement provides up to 61.70 percent stabilization of the soil, notably improving its bearing capacity, comparing the results with the added stabilizers.