Excess porewater pressures during secondary compression

Date

2005-09-12

Author

Mesri, Gholamreza
Huvaj Sarıhan, Nejan
Barames, Vardhanabhuti
Ho, YH

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

138
views

0
downloads

A gradient in an excess porewater pressure conveys water out of soil during secondary compression. This excess porewater pressure is produced by the tendency of soil to continue compression as a result of the disequilibrium produced during primary compression. Because the measurement of excess porewater pressure is frequently specified for establishing the progress of primary consolidation, it is useful to know the order of magnitude of excess porewater pressure associated with secondary compression. Mathematical analyses and experimental results suggest magnitudes of excess porewater pressure at the beginning of secondary compression corresponding to u'(m)/sigma(v)' = 1 to 3 % for C-alpha / C-c = 0.03 to 0.07, respectively, which decrease rapidly with the progress of secondary compression.

Subject Keywords

Engineering, Geological, Soil science

URI

https://hdl.handle.net/11511/54758

Collections

Department of Civil Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Effective Stress and Shear Strength of Moist Uniform Spheres Toker, Nabi Kartal; Culligan, Patricia J. (Wiley, 2014-05-01) In continuum soil mechanics, the mechanical behavior of an element of soil is related to the effective stress, which is a measure of the average stress transmitted through the solid matrix in the form of contact stresses. In unsaturated soils, the coexistence of water and air within the soil pore space complicates this concept because the microscopic distribution of each fluid phase in soil pores cannot be known. Because it is thus not possible to physically measure effective stress in unsaturated soils, it...
Assessment of core-filter configuration performance of rock-fill dams under uncertainties Çalamak, Melih; Yanmaz, Ali Melih (American Society of Civil Engineers (ASCE), 2018-04-01) Probabilistic analyses are conducted for seepage through a rock-fill dam having two different core-filter configurations: one sloping and the other a central symmetrical core-filter arrangement. Uncertainties in core and filter are considered, assuming their hydraulic conductivities as random variables. For this purpose, finite-element software used for groundwater flow and seepage analyses is coupled with a random-number-generation algorithm. Monte Carlo simulations are performed for probabilistic seepage ...
Obtaining soil-water characteristic curves by numerical modeling of drainage in particulate media / Shoarian Sattari, Amir; Toker, Nabi Kartal; Department of Civil Engineering (2014) The soil water characteristic curve (SWCC) reflects fundamental drainage properties of partially saturated soils by revealing the relation between soil suction and water content. Although during the past decades, various experimental methods have been proposed for obtaining the SWCC, these approaches are generally time consuming, expensive and highly dependent on operator skills. One solution to this has been sought through various empirical or physico-empirical formulations that link the SWCC to common soi...
Determination of the dynamic characteristics and local site conditions of the plio-quarternary sediments situated towards the north of Ankara through surface wave testing methods Eker, Arif Mert; Akgün, Haluk; Department of Geological Engineering (2009) The purpose of this study is to assess the engineering geological and geotechnical characteristics and to perform seismic hazard studies of the Upper Pliocene to Quaternary (Plio-Quaternary) deposits located towards the north of Ankara through surface wave testing methods. Based on a general engineering geological and seismic site characterization studies, site classification systems are assigned in seismic hazard assessments. The objective of the research is to determine the regional and local seismic soil...
Estimation of grain characteristics of soils by using cone penetration test (CPT) data Ozan, Cem; Çetin, Kemal Önder; Department of Civil Engineering (2003) Due to lack of soil sampling during a conventional cone penetration testing (CPT), it is necessary to classify soils based on recorded tip and sleeve friction and pore pressure (if available) values. However, currently available soil classification models are based on deterministic and judgemental determination of soil classification boundaries which do not address the uncertainties intristic to the problem. Moreover, size and quality of databases used in the development of these soil classification models ...

Citation Formats

G. Mesri, N. Huvaj Sarıhan, V. Barames, and Y. Ho, “Excess porewater pressures during secondary compression,” 2005, vol. 2, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/54758.