Undrained shear strength characteristics of compacted clay reinforced with natural hemp fibers

2016 ◽  
Vol 10 (3) ◽  
pp. 263-270 ◽  
Author(s):  
Assile Abou Diab ◽  
Salah Sadek ◽  
Shadi Najjar ◽  
Mohamad Hassan Abou Daya
Keyword(s):  
Shear Strength ◽  
Undrained Shear Strength ◽  
Strength Characteristics ◽  
Compacted Clay ◽  
Hemp Fibers ◽  
Undrained Shear

scholarly journals Interpretation of undrained shear strength observed in confined triaxial compression tests on compacted clay

2021 ◽  
Author(s):  
Chee K. Wong ◽  
Martin Lun ◽  
Ron C.K. Wong
Keyword(s):  
Shear Strength ◽  
Unsaturated Soil ◽  
Water Pressure ◽  
Triaxial Compression ◽  
Undrained Shear Strength ◽  
Compacted Clay ◽  
Compression Tests ◽  
Basic Model ◽  
Triaxial Compression Tests ◽  
Undrained Shear

This paper presents an interpretation technique to quantify the effects of compaction state and matric suction on the undrained shear strength of compacted clay under confined undrained triaxial compression. This novel technique is based on the mathematical frameworks of SHANSEP (Stress History and Normalized Soil Engineering Property) method for saturated soil and BBM (Barcelona Basic model) for unsaturated soil. Test data of compacted Calgary till were analyzed and interpreted using the proposed technique. The interpretation technique is very useful in delineating the relative impacts of the factors on the behavioral trends in measured undrained shear strength. It was found that in addition to the initial compacted void ratio and suction, soil structure and failure mode exert significant influence on the undrained shear strength of compacted clay. This technique is attractive to engineering practitioners because the confined undrained compression tests (with no pore air and water pressure measurement) are much simpler and less time consuming compared to rigorous laboratory tests on unsaturated soil.

scholarly journals The undrained shear strength characteristics of silty sand: an experimental study of the effect of fines

2011 ◽  
Vol 64 (1) ◽  
pp. 31-39 ◽  
Author(s):  
Mostefa Belkhatir ◽  
Hanifi Missoum ◽  
Ahmed Arab ◽  
Noureddine Della ◽  
Tom Schanz
Keyword(s):  
Experimental Study ◽  
Shear Strength ◽  
Undrained Shear Strength ◽  
Silty Sand ◽  
Strength Characteristics ◽  
Undrained Shear

scholarly journals Rate effects on the undrained shear strength of compacted clay

2016 ◽  
Vol 56 (4) ◽  
pp. 719-731 ◽  
Author(s):  
W. Mun ◽  
T. Teixeira ◽  
M.C. Balci ◽  
J. Svoboda ◽  
J.S. McCartney
Keyword(s):  
Shear Strength ◽  
Undrained Shear Strength ◽  
Compacted Clay ◽  
Rate Effects ◽  
Undrained Shear

Undrained Shear Strength Characteristics of Natural Silty Clay

2013 ◽  
Vol 405-408 ◽  
pp. 285-289
Author(s):  
Jie Yin ◽  
Yong Hong Miao
Keyword(s):  
Shear Strength ◽  
Stress State ◽  
Water Content ◽  
Yield Stress ◽  
Undrained Shear Strength ◽  
Strength Characteristics ◽  
Silty Clay ◽  
Undisturbed Samples ◽  
Undisturbed Sample ◽  
Undrained Shear

Triaxial consolidation undrained shear tests were carried out on both undisturbed and reconstituted samples of natural silty clay to investigate their undrained shear strength characteristics. Test results suggest that the strength envelope of the undisturbed sample is composed by two straight lines, which is different from that of the strength envelopes of reconstituted samples showing a straight line through the origin. Undrained shear strength of undisturbed samples are larger than corresponding reconstituted samples due to the resistance of soil structure in the pre-yield stress state. In the post-yield stress state, however, strength envelope of the undisturbed sample lies among the reconstituted samples with different initial water contents. Undrained shear strength for undisturbed samples in the post-yield stress state and reconstituted samples can be well correlated with the water content under different confining stress, which implies that undrained shear strength mainly depends on the current water content.

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