Dynamic Properties of Cement-Treated Marine Clay

Abstract Deep cement mixing and jet grouting is a widely adopted ground improvement method to solidify soft sediments. Several reports are available on the static strength and maximum shear modulus of cement-treated ground. This paper discusses the variation of shear modulus and damping ratio of cem...

Full description

Saved in:
Bibliographic Details
Published in:International journal of geomechanics 2020-06, Vol.20 (6)
Main Authors: Subramaniam, P, Banerjee, Subhadeep
Format: Article
Language:English
Subjects:
Amplitudes
Cement
Clay
Concrete
Confining
Curing
Curing (processing)
Damping
Damping ratio
Grouting
Jet grouting
Magnetism
Moisture content
Pressure
Pressure effects
Sediments
Shear modulus
Shear strain
Stress
Technical Papers
Water content
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Abstract Deep cement mixing and jet grouting is a widely adopted ground improvement method to solidify soft sediments. Several reports are available on the static strength and maximum shear modulus of cement-treated ground. This paper discusses the variation of shear modulus and damping ratio of cement-treated marine clay at various shear strain amplitudes. A series of resonant column tests and cyclic triaxial experiments are conducted to study the effects of effective confining pressure, curing stress, cement content, initial clay water content, and curing time on the shear modulus reduction and damping ratio of cement-treated marine clay. Results show that the maximum shear modulus increases by 88%, 131%, and 282% for clays treated with cement contents of 5%, 7.5%, and 10%, respectively, for 100 kPa confining pressure. For clay treated with 5% cement content and cured under 30 kPa stress, at a very small strain level, the shear modulus increases by about 37%, while the confining pressure increases from 100 to 200 kPa. However, the increase in shear modulus reduces to 7% for specimens cured under 90 kPa stress. However, the increase in shear modulus is more prominent at a smaller range of shear strains (
ISSN:1532-3641
1943-5622
DOI:10.1061/(ASCE)GM.1943-5622.0001673