Evaluación de la resistencia al corte no drenada de un suelo fino mejorado con ceniza de cascarilla de arroz
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The present investigation seeks to determine the resistance to the undrained cut of a fine soil obtained in the vicinity of the city of Ibagué, with the addition of different percentages of rice husk ash. Initially, laboratory tests were carried out to classify and identify the physical and mechanical properties of the materials obtained. Next, the soil was mixed with the rice husk ash with the following percentages: 4%, 6%, 10%, 15%, 20%, 25%, and 30%. As the final phase, the corresponding specimens were performed to perform the unconfined compression test, as well as knowing the data and being able to analyze the mechanical behavior of each dosage. The results obtained show an improvement in the mechanical properties of the soil through the addition of rice husk ash, managing to identify that the combinations with the best performance are in the range of 4% to 10%, presenting an increase in the resistance to unconfined compression with an average of 120 to 247% with respect to the natural resistance of the soil. With this research it is concluded that the use of rice husk ash with the appropriate dosages, generate a great contribution to the improvement of the mechanical properties of a fine soil, also provides an economic alternative and with good results.