Journal ArticleDOI
Undrained strength characteristics of an artificially cemented marine clay
A. P. Panda,S. Narasimha Rao +1 more
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TLDR
A series of isotropically consolidated undrained triaxial tests has been performed on an artificially cemented marine clay using lime as an additive as discussed by the authors, and the results show that cemented soils display smaller strain at failure, higher strength, a gradual reduction in shearing resistance with increase in consolidation pressure, and a nonlinear failure envelope in effective stresses.Abstract:
A series of isotropically consolidated undrained triaxial tests has been performed on an artificially cemented marine clay using lime as an additive. This procedure is helpful to simulate the behavior of naturally cemented marine clays often found in many coastal and offshore areas. By comparing the undrained shear behavior of artificially cemented samples with the available data on the naturally cemented marine clays, the effect of cementation on the mechanical properties of clays is evaluated. The results show that cemented soils display smaller strain at failure, higher strength, a gradual reduction in shearing resistance with increase in consolidation pressure, and a nonlinear failure envelope in effective stresses. Within the degree of cementation considered in this study, the cementation is shown to have little affect on the generation of pore pressure. The article discusses the phenomenon of a “phase transformation”; and its relation to the existence of bisegmental stress‐strain behavior, typical o...read more
Citations
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Undrained deformation behavior of saturated soft clay under long-term cyclic loading
TL;DR: In this paper, a series of monotonic triaxial tests and long-term cyclic (50,000 cycles) TRIAXial tests have been carried out to investigate the undrained deformation behavior of undisturbed soft clay from Wenzhou, China.
Journal ArticleDOI
A constitutive model for cemented clays capturing cementation degradation
TL;DR: In this article, a constitutive model for cemented clays, referred to as the Cemented Cam Clay model (CCC), was proposed to simulate the cementation degradation during loading.
Journal ArticleDOI
Undrained strength behaviour of a cemented marine clay under monotonic and cyclic loading
G.G. Moses,S.N. Rao,P.N. Rao +2 more
TL;DR: In this article, a series of monotonic and cyclic triaxial shear tests were carried out to study the influence of the strain effect and load cycles on the undrained shear strength of a cemented marine clay from the East coast of India.
Journal ArticleDOI
Improving the strength of weak soil using polyurethane grouts: A review
TL;DR: In this paper, a literature review and collecting information on the application of polyurethane chemical grout for improving the properties of weak soils has been conducted and the review concluded that improved polyurethsane has the potential to improve weak soil types for infrastructure development.
Journal ArticleDOI
Strengthening of Soft Marine Clay Using Bioencapsulation
TL;DR: In this article, a bioencapsulation method was used to increase the unconfined compressive strength of marine clay aggregates with a size of 5mm from almost zero to more than 2MPa.
References
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Journal ArticleDOI
The pore-pressure coefficients a and b
TL;DR: In this article, the pore pressure coefficients A and B were derived and some typical values of the experimentally determined pore-pressure coefficients were given, and some practical applications of these coefficients have been outlined by Bishop.
Journal ArticleDOI
Laboratory investigations on the lime stabilization of sensitive clays: shear strength development
TL;DR: In this paper, a laboratory investigation on the quicklime stabilization of sensitive clays has shown that significant strength increase can be obtained if enough water content above the liquid limit is added to the clays.
Journal Article
Engineering behavior of cement-treated bangkok soft clay
TL;DR: In this article, the authors presented the physical characteristics, index properties, unconfined compressive strength and compressibility characteristics of cement-treated soft Bangkok clay for 28-day curing time.
Journal ArticleDOI
Reaction products formed in lime-stabilized marine clays
S. Narasimha Rao,G. Rajasekaran +1 more
TL;DR: In this paper, the beneficial changes occurred in a marine clay due to the diffusion of lime from lime column and lime injected points have been studied using XRD and SEM techniques and new compounds formed have been identified using the XRD technique.