Influencia del contenido de materia orgánica sobre el comportamiento mecánico de los suelos finos

Abstract

The purpose of this project is to analyse the influence of the organic matter content on the bearing capacity and settlements of a surface foundation through data obtained by different authors, which allowed to know the physical and mechanical behaviour of this type of soils with different percentages of organic matter. Organic soils are characterized by their low resistance, high water absorption capacity and high settlements. To determine the behaviour of this type of soil, the results of several authors were analysed with graphs representing each property, where parameters such as specific gravity and friction angle decrease with higher percentages of organic matter, while Atterberg limits, compressibility index, recompression index and void ratio increase. The bearing capacity of the soil was calculated by two methods: total and effective forces. The result was that the soil strength decreases with increasing organic matter, which leads to the design of large footings. In addition, settlements were analysed, which increase with increasing organic matter. Data from three authors and trend line values were taken for each parameter, which provided the necessaries datas for this analysis. The profiles designed from the trend lines with 0% to 100% organic matter percentages were modelled in Plaxis software to make a comparison with the manually calculated data.