scholarly journals Effect of Gradation and Particle Size on Correlations between DCP Index (ASTM D6951 – 03) and Relative Density for Sand

10.29007/r1lb ◽  
2018 ◽  
Author(s):  
Mehul Katakiya ◽  
Ami Parekh
Keyword(s):  
Particle Size ◽  
Relative Density ◽  
Research Study ◽  
Cone Penetration ◽  
Depth Of Penetration ◽  
Cone Penetration Tests ◽  
Dry Sand ◽  
Relative Density Of Sand ◽  
Penetration Tests ◽  
Dynamic Cone Penetration

This research study was mainly focus on performing dynamic cone penetration tests according to ASTM D691 - 03 with various relative density on different gradation (poorly graded and well graded) of sand. Sand samples were collected from different region of Gujarat viz. Khanpur, Sevaliya, Ahmedabad. Well graded sand samples were prepared by mixing in different proportions of sand samples collected from above locations. Dynamic cone penetration tests were carried out in Plexiglas tank (60 cm × 60 cm × 75 cm) on three different poorly graded and three different well graded sand at different relative density of 30, 50, 65, 75 %. Relative density of sand samples were determined according to IS : 2720 (Part 14) – 1983. Dry sand has been filled in tank up to 70 cm height of tank. Tamping was done with rammer (30 cm × 30 cm × 1 cm) of 9.5 kg weight to achieve desired density. Desired depth of penetration is 60 cm. Dynamic cone penetration tests were performed according to ASTM D6951-03.

Influence of particle size on the correlation between shear wave velocity and cone tip resistance

2011 ◽  
Vol 48 (4) ◽  
pp. 599-615 ◽  
Author(s):  
Mourad Karray ◽  
Guy Lefebvre ◽  
Yannic Ethier ◽  
Annick Bigras
Keyword(s):  
Particle Size ◽  
Shear Wave ◽  
Wave Velocity ◽  
Shear Wave Velocity ◽  
Data Bank ◽  
Cone Penetration ◽  
Cone Penetration Tests ◽  
Tip Resistance ◽  
Project Data ◽  
Penetration Tests

The construction of the Péribonka dam involved deep compaction of its foundation using vibroflotation and dynamic compaction. Surface wave testing was used, in addition to classical tests (cone penetration tests (CPTs) and standard penetration tests (SPTs)) for the assessment of vibrocompaction. More than 900 shear wave velocity (Vs) and 1000 CPT profiles were obtained. This set of tests performed prior to and following vibrocompaction constitutes an important data bank, used in this study to establish a relationship between normalized shear wave velocity, Vs1, normalized tip resistance, qc1, and mean grain size, D50. Using the Péribonka project data obtained on fairly coarse sands in conjunction with the Canadian Liquefaction Experiment (CANLEX) project data obtained on fine sands has confirmed the significant effect of particle-size distribution on the relationship between Vs and qc. The paper proposes a correlation between Vs1, qc1, and D50 for uncemented and Holocene-age granular soils in continuity with the relation developed by Wride et al. from the CANLEX project.

scholarly journals Measurements of driving energy in SPT and various dynamic cone penetration tests

2015 ◽  
Vol 55 (1) ◽  
pp. 201-212 ◽  
Author(s):  
Tatsunori Matsumoto ◽  
Le Ta Phan ◽  
Akihiko Oshima ◽  
Shinya Shimono
Keyword(s):  
Cone Penetration ◽  
Cone Penetration Tests ◽  
Penetration Tests ◽  
Dynamic Cone Penetration

Effects of Aging on Freshly Deposited or Densified Calcareous Sands

1996 ◽  
Vol 1547 (1) ◽  
pp. 76-81 ◽  
Author(s):  
Hasan A. Al-Sanad ◽  
Nabil F. Ismael
Keyword(s):  
Field Tests ◽  
Penetration Resistance ◽  
Cone Penetration ◽  
Calcareous Sand ◽  
Cemented Sand ◽  
Cone Penetration Tests ◽  
Effects Of Aging ◽  
Penetration Tests ◽  
Zero Time ◽  
Dynamic Cone Penetration

The effect of aging on the strength and compressibility of calcareous desert sands was examined by laboratory and field tests. The field tests included standard penetration and dynamic cone penetration tests on freshly deposited loose calcareous sand at one site in Kuwait City. The laboratory tests included direct shear, consolidation, and California bearing ratio tests on reconstituted compacted specimens from a naturally cemented sand. These tests were conducted at zero time and after aging for different periods in the laboratory. The results indicate an increase in the shear strength and a reduction in compressibility at a decreasing rate with time. The penetration resistance increased by 100 to 200 percent as a result of aging over a period of 1 year. The changes in strength and compressibility are attributed to mechanical effects resulting from particle interlocking, reorientation, and dispersion and increased friction at a constant effective stress.

Sign in / Sign up

Export Citation Format

Share Document