RESEARCHING THE EFFECTS OF CHANGING THE INITIAL PRESSURE IN THE OEDOMETER COMPRESSION TEST WITH SOFT PLASTIC SOIL ác giả nguyenthiphuongkhue@gmail com, thuhabkdn@gmail com óm tắt g i m m t có t i c g[.]
RESEARCHING THE EFFECTS OF CHANGING THE INITIAL PRESSURE IN THE OEDOMETER COMPRESSION TEST WITH SOFT PLASTIC SOIL ác giả: nguyenthiphuongkhue@gmail.com, thuhabkdn@gmail.com óm tắt: g i m m t t t c c ti c t c i ic c : c m 0,5kG/cm c cc c t g g i m ác c ti t c t t ó c ó : có t i c g g i t ả t g i tt g t g c c c tc t ả t t g i m Oedometer óm tác giả ti t g i m t ti c t m m ic c t i ic g kG/cm t ảt g i mc t i c c có ả g t ảt g i m óm tác giả i c ả g tc c t c i t m giá c c c t g i m Oedometer cc m c t Cv it -96 c g t gt g ác p Abstract: Oedometer compression tests has been widely used for a long time; their results serve as bases for calculating ground subsidence via such parameters as compression index Cc, coefficient of consolidation Cv, pre-consolidation pressure Pc This paper analyzes and compares the results of an Oedometer compression test with a change in the initial pressure level The authors carried out the test based on the criteria D2435-96 and TCVN4200:2012 for 02 soft soil samples with the initial pressure varying levels are 0,125; 0,25; 0,5kG/cm2 and the final pressure is 8kG/cm2 The experimental results show that the selection of the initial pressure level plays an important role and exerts influence on the experimental results The authors propose that the test for determining the mechanical and physical properties of soil should be thoroughly conducted to properly evaluate the soil state in order to make a more accurate choice for the initial pressure level in the Oedometer compression test Key words: Oedometer compression test; Pre-consolidation pressure; Compression index; Coefficient of consolidation; Soft soil