Volume 19, No. 4, 2022
Capillary Ascension In Fine-Grained Soil Using A Reduced Model
Jair Arrieta , Carlos Millan2 and Fernando Jove
Abstract
The main objective of this article is to analyze the capillary rise of a fine soil of sedimentary origin in a scale model in the laboratory. The results showed that water’s velocity rising through the capillaries of soil increased when the soil was compacted with higher dry unit weight. The soil expansion started to manifest after the capillary water reached an average of 1/3 of the total height. Over time, the permeability coefficient decreased in all cases from 0.0005 cm/s to 0.0003 cm/s. It was found that the air intake was located at 25 cm in height and that the matric suction in the soil registered values of 600- 800 kPa for saturation degrees between 90%-100%. It was verified that the rise height vs. time curve is mainly influenced by the molding porosity, saturated state permeability coefficient, and air entry height.
Pages: 512-520
Keywords: Rising Damp, Matrix Suction, Fine Soils, Reduced Model, Filter Paper.