Open AccessEffect of Saturation Levels on Shear Strength and Bearing Capacity Properties of Soil Types
Author(s) -
Mahmood D. Ahmed,
Alaa D. Almurshedi,
Hayder H. Alwan
Publication year - 2019
Publication title -
xi'nan jiaotong daxue xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.308
H-Index - 21
ISSN - 0258-2724
DOI - 10.35741/issn.0258-2724.54.6.23
Subject(s) - cohesion (chemistry) , direct shear test , saturation (graph theory) , bearing capacity , soil water , geotechnical engineering , soil test , soil science , water content , friction angle , shear (geology) , shear strength (soil) , unified soil classification system , environmental science , soil classification , geology , materials science , mathematics , composite material , chemistry , organic chemistry , combinatorics
This study presents a comprehensive set of laboratory works for the examined soil layers extracted from Baghdad city (specifically from Alkadhimya, Alaitaifiya, and Alhurriya) to illustrate their engineering properties. The researchers have adopted the unified soil classification system for soil classification purposes. Also, the direct shear test was performed for soil samples with various degrees of saturation (0%, 25%, 50%, 75%, and 100%). The test results have shown a significant reduction in cohesion property with higher moisture content within soil samples. Also, a noticeable reduction in angle of internal friction value has occurred with such changes. Furthermore, it has been found that the bearing capacity of unsaturated soils ranged between 2000 and 3000 KPa, and about 500-700 KPa for the soaked soil samples.