Estudio de la variabilidad de la densidad seca y grado de compactación de un suelo, con respecto al contenido de humedad de las subrasantes : estudio de la variabilidad de la densidad seca y grado de compactación de un suelo, con respecto al contenido de humedad de las subrasantes de tipo arcilla arenosa, poco plástica (CL).

Abstract

Five zones were delimited within the DMQ based on previous soil microzonation studies that indicated the presence of low plastic sandy clay type soil (CL). Laboratory tests corresponding to the SUCS classification were performed, which identified four zones with the presence of the required soil. Zone 2 was selected as the most suitable for the study. The standard Proctor test was carried out in the selected zone in order to obtain the compaction curve of the soil mass and determine the optimum moisture point. With these results, the points of the compaction curve to be evaluated were defined and the soil masses were prepared with the necessary moisture content for the field density tests. To perform these tests, a mold was built and an impact compactor was used. Equations were established to calculate the necessary compaction time and an additional calibration was performed, resulting in a total time of one minute and 30 seconds. Once the compaction was completed, measurements were made with the Cone and Sand and the Nuclear Probe. The results of each test showed a relationship, with the values obtained with the Cone and Sand being slightly higher. The results allowed determining that both the decrease and increase of moisture content in the soil mass lead to a reduction in the maximum dry density. However, the most critical case occurs with decreasing moisture content.