scholarly journals Evaluation of habitat of Phragmites australis with the simple dynamic cone penetration test results

2016 ◽  
Vol 42 (1) ◽  
pp. 228-231
Author(s):  
Takeshi SHIGETOMI ◽  
Toshinor YASUZATO
Keyword(s):  
Phragmites Australis ◽  
Cone Penetration Test ◽  
Test Results ◽  
Penetration Test ◽  
Cone Penetration ◽  
Dynamic Cone Penetration Test ◽  
Dynamic Cone Penetration

USAGE OF DYNAMIC CONE PENETRATION TEST TO ASSESS THE ENGINEERING PROPERTIES OF SAND

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Omar S. Baghabra Al-Amoudi ◽  
Saad A. Aiban ◽  
Abdulrahman M. Hamid
Keyword(s):  
Saudi Arabia ◽  
Large Scale ◽  
Cone Penetration Test ◽  
Engineering Properties ◽  
Dry Density ◽  
Test Results ◽  
Penetration Test ◽  
Cone Penetration ◽  
Dynamic Cone Penetration Test ◽  
Dynamic Cone Penetration

Saudi Arabia is witnessing unparalleled development for all types of construction, especially in eastern Saudi Arabia where the major oil and petrochemical industries are located. In this region, major projects are often located on sandy soils and it is difficult to assess the properties of sands using conventional methods. In this investigation, a laboratory program was conducted using the dynamic cone penetration test (DCPT) on sand samples with different relative densities (40%, 60% and 90%) that were compacted in a large scale mold (1600 mm diameter and 1500 mm height). The placement of sand was achieved through the pluviation and vibration techniques. Results of investigation indicated that the increase in the dry density was associated with a decrease in the dynamic cone penetration index (DCPI). Further, it was noted that the shear strength has a significant effect on the dynamic cone penetration test results. In summary, results of this investigation indicate that DCPT is an effective and reliable tool in the assessment of the properties of sand backfills.

FIELD ASSESSMENT OF DYNAMIC CONE PENETRATION TEST TO EVALUATE SAND DENSITY

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Abdulrahman M. Hamid ◽  
Saad A. Aiban ◽  
Omar S. Baghabra Al-Amoudi
Keyword(s):  
Field Testing ◽  
Cone Penetration Test ◽  
Engineering Properties ◽  
Dry Density ◽  
Penetration Test ◽  
Cone Penetration ◽  
Replacement Method ◽  
Dynamic Cone Penetration Test ◽  
Dynamic Cone Penetration

Rapid and accurate in-situ measurement of soil properties is still a challenge facing the construction industry and there is a need for new and advanced devices and methods. Dynamic cone penetration test (DCPT) is an effective device used for field exploration and quality assessment of subsoil. DCPT could be used to predict the engineering properties of sand because it is difficult to perform conventional density tests, such as the sand replacement method, especially when loose or submerged sandy soil is encountered. Two cases of DCP field testing were conducted in Al-Jubail and Ras Al-Khair, eastern Saudi Arabia, where the major petrochemical industries are located. These tests were utilized to evaluate the potential use of DCPT to assess the density during the construction of backfills, whereby the nuclear gauge was also used to accurately measure the in situ soil density and water content. The DCP-nuclear gauge data clearly indicated that there is a good correlation between the dry density obtained from the nuclear gauge and the dynamic cone penetration (DCP) readings, which proves that the DCPT is an effective and reliable tool in the assessment of in situ compaction of sand backfills.

scholarly journals Application of Dynamic Cone Penetration Test to Gypseous Soils

2017 ◽  
pp. 1-5
Author(s):  
Ahmed A. H. Al-Obaidi ◽  
Qudama A. A. Al-Ashoishi
Keyword(s):  
Laboratory Tests ◽  
Cone Penetration Test ◽  
Penetration Test ◽  
Large Area ◽  
Cone Penetration ◽  
Compacted Soils ◽  
Gypsum Content ◽  
Cylindrical Mold ◽  
Dynamic Cone Penetration Test ◽  
Dynamic Cone Penetration

Dynamic cone penetration test (DCPT) is a fast, economical and easy to conduct. It is widely used to assess the strength of natural and compacted soils. The device is introduced in the 1950s. However, it was newly introduced in Iraq. This study aims to evaluate the potentials of DCP in geotechnical explorations in the gypseous soil since it covers a large area of the country and to obtain correlations with the California bearing ratios (CBR) and investigating the effect of gypsum on the CBR-DCP relationship. Field and Laboratory tests were conducted on soil sample retrieved from six sites with different gypsum contents (28-41) %. Laboratory tests include performing CBR and DCP tests in a cylindrical mold. A statistical analysis of the results shows that gypsum content is an affecting factor on DCP and good CBR-DCP correlations on gypsum content were obtained.

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