Results 251 to 260 of about 73,836 (303)

Heave of silty sands

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1977
Freezing tests were conducted at the University of Washington Periglacial Laboratories on predominantly quartz mineral silty sands at five different gradations, with a degree of fineness of (grain size diameter less than 0.02 mm) 5.6%, 8.4%, 10.6%, 15.4%, and 21.5% by weight.
Mehmet A. Sherif, Isao Ishibashi, Wing-Wai Ding   +2 more
openaire   +2 more sources

Undrained Behavior of Silty Glacial Sand

Geo-Congress 2014 Technical Papers, 2014
The instability due to rapid generation of pore water pressure in loose to medium dense soil is one of the major causes of catastrophic failure of geotechnical structures. Most of the previous studies on instability- liquefaction behavior have focused on clean sands, although sands with a significant amount of fines (particle size < 0.075 mm) are ...
A. T. M. Z. Rabbi, M. M. Rahman, D. A. Cameron   +2 more
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Strength and Dilatancy of Silty Sand

Journal of Geotechnical and Geoenvironmental Engineering, 2014
AbstractFines content can have a great influence on the mechanical behavior of sand. The effect of fines content has not been taken into account in most of the strength-dilatancy relationships for sand. An attempt was made in this paper to account for the influence of fines content on the strength-dilatancy relationship of silty sands. The test data on
Yang Xiao, Hanlong Liu, Yumin Chen, Jian Chu   +3 more
openaire   +1 more source

Dynamic compaction of saturated sands and silty sands: theory

Proceedings of the Institution of Civil Engineers - Ground Improvement, 2009
Dynamic compaction (DC) with pre-installed wick drains is an emerging soil improvement technique for densification and liquefaction mitigation of saturated low-permeability loose sands containing non-plastic silts. The compaction process induces excess pore pressures, possible soil liquefaction, and concurrent densification.
S. Thevanayagam, R. Nashed, G. R. Martin
openaire   +1 more source

Dynamic compaction of saturated sands and silty sands: design

Proceedings of the Institution of Civil Engineers - Ground Improvement, 2009
Current practice for design, suitability assessment, and determination of the optimum field operation parameters for dynamic compaction rely mainly on field pilot tests, past experience, and empirical equations. At present there are no detailed analytical procedures available to determine the densification achievable, or to analyse the effects of ...
R. Nashed, S. Thevanayagam, G. R. Martin
openaire   +1 more source

Dynamic compaction of saturated sands and silty sands: results

Proceedings of the Institution of Civil Engineers - Ground Improvement, 2009
Numerical simulations of dynamic compaction of three loose saturated sands and silty sand sites are presented. The theory associated with the numerical model is presented in a companion paper. First, a case history of dynamic compaction in a clean sand site without pre-installed wick drains is considered.
R. Nashed, S. Thevanayagam, G. R. Martin
openaire   +1 more source

Cyclic undrained behavior of silty sand

Soil Dynamics and Earthquake Engineering, 1995
Abstract Laboratory cyclic triaxial tests were performed to investigate the effect of fine content on the pore pressure generation in sand. Strain-controlled, consolidated undrained tests have been performed with a cyclic shear strain range of 0·015-1·5%.
D. Erten, M.H. Maher
openaire   +2 more sources

Liquefaction Potential Assessment of Silty and Silty-Sand Deposits: A Case Study

AIP Conference Proceedings, 2008
he paper shows a case study concerning the liquefaction potential assessment of deposits which mainly consist of non plastic silts and sands (FC > 35 %, Ip < 10 %, CF negligible). The site under study has been characterized by means of in situ tests (CPTU, SPT and DPSH), boreholes and laboratory tests on undisturbed and remolded samples.
LO PRESTI, DIEGO CARLO, SQUEGLIA, NUNZIANTE   +1 more
openaire   +3 more sources

Liquefaction Testing of Stratified Silty Sands

Journal of Geotechnical and Geoenvironmental Engineering, 2000
The cyclic behavior of stratified silty sandy soils is at present poorly understood, yet these materials are commonly found in alluvial deposits and hydraulic fill, which have a history of liquefaction during earthquakes. The main objective of this research project was to compare the behavior of stratified and homogeneous silty sands during seismic ...
F. Amini, G. Z. Qi
openaire   +1 more source

Stabilization of Silty Sand with Nontraditional Additives

Transportation Research Record: Journal of the Transportation Research Board, 2002
A laboratory experiment was conducted to evaluate the stabilization of a silty- sand (SM) material with nontraditional chemical or liquid stabilizers. SM soil specimens were mixed with various stabilization products and compacted using a gyratory compaction machine to approximate ASTM D1557 moisture—density compaction.
Rosa L. Santoni, Jeb S. Tingle, Steve L. Webster   +2 more
openaire   +1 more source