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A platform for research: civil engineering, architecture and urbanism
Liquefaction Potential of Dams and Foundations. Report 4. Determination of 'in situ' Density of Sands
The use of undisturbed samples to evaluate in situ density and Standard Penetration Test (SPT) to estimate in situ relative density is reviewed. A procedure for obtaining high quality undisturbed samples of sands and the influence of this sampling procedure on the in situ relative density are discussed. The use of radiographs to evaluate sample quality is examined. As a result of studies reviewed, it is concluded that the SPT is not sufficiently accurate to be recommended for final evaluation of the density or relative density of a site unless site-specific correlations are developed. High quality undisturbed samples of sands may be obtained using a fixed-piston sampler and drilling mud. This sampling procedure yields very good samples in deposits of medium dense sands; however, the procedure tends to densify loose sands and loosen dense sands. (Author)
Liquefaction Potential of Dams and Foundations. Report 4. Determination of 'in situ' Density of Sands
The use of undisturbed samples to evaluate in situ density and Standard Penetration Test (SPT) to estimate in situ relative density is reviewed. A procedure for obtaining high quality undisturbed samples of sands and the influence of this sampling procedure on the in situ relative density are discussed. The use of radiographs to evaluate sample quality is examined. As a result of studies reviewed, it is concluded that the SPT is not sufficiently accurate to be recommended for final evaluation of the density or relative density of a site unless site-specific correlations are developed. High quality undisturbed samples of sands may be obtained using a fixed-piston sampler and drilling mud. This sampling procedure yields very good samples in deposits of medium dense sands; however, the procedure tends to densify loose sands and loosen dense sands. (Author)
Liquefaction Potential of Dams and Foundations. Report 4. Determination of 'in situ' Density of Sands
W. F. Marcuson (author)
1977
33 pages
Report
No indication
English
Soil & Rock Mechanics , Sand , Density , Geological survey , Sampling , Radiography , Soil tests , Dams , Foundations(Structures) , Samplers , Mud , Drills , Site selection , Concrete , Overpressure , Loads(Forces) , Correlation techniques
In situ liquefaction resistance of sands
| British Library Conference Proceedings | 1999