NEHRP Clearinghouse
- Title
- Field Index Test for Estimating Liquefaction Potential.
- File
- PB84220599.pdf
- Author(s)
- Castro, G.; Shields, D. R.; France, J. W.
- Source
- National Science Foundation, Washington, DC. Div. of Industrial Science and Technological Innovation., March 31, 1982, 64 p.
- Abstract
- The feasibility of using a vane shear device as an in situ index test for evaluating the susceptibility of sands to earthquake-induced liquefaction was investigated. The behavior of sands placed at known densities in a laboratory test cell equipped with a prototype vane shear was examined as the sands were subjected to drained and undrained shear loading. Tests were performed on two uniform fine sands. It was found that the drained vane shear test can be used to evaluate the liquefaction potential of sands based on the effective stress changes that occur during the test due to volume changes in the shear zone. It was concluded that an undrained shear test is not practical in clean sands because of the rapid dissipation of the shear-induced pore pressures.
- Keywords
- Deformations; Pressure; Shear stress; Liquefaction; Soil dynamics; Soil liquefaction; Feasibility; Sands; Earthquakes