Download or read book The Mechanical Behavior of Heavily Overconsolidated Resedimented Boston Blue Clay written by Albalyra Geraldine Vargas Bustamante and published by . This book was released on 2013 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geotechnical engineers encounter some of the most challenging problems in heavily overconsolidated soils. Clays under this condition originated in nature or man-made construction. This thesis investigates the mechanical behavior heavily overconsolidated Resedimented Boston Blue Clay (RBBC), as an analog test material. The uniformity, reproducibility, and extensive knowledgebase on this clay permit the investigation of only the effect of overconsolidation. A series of undrained triaxial compression shear tests have been performed on specimens that were Ko-consolidated and swelled to overconsolidation ratios (OCR) ranging from 5 to 62 on RBBC, as well as on Intact Presumpscot Maine Clay. Specimens were consolidated to maximum stress levels between 1.1 and 5.4 MPa. The undrained shear behavior revealed an important relationship with overconsolidation ratio. The triaxial compression test results exhibit a significant increase in the undrained strength ratio (su/[sigma]'vc) when normalized to the minimum consolidation stress. It also shows an important increase in the stiffness, increase in the strain ([epsilon]f) to mobilize the peak resistance and a significant increase of friction angle ([phi]') with overconsolidation. The applicability of the SHANSEP equation and impact on its equation parameters are also discussed in detail. A comprehensive comparison of the new results with prior normally consolidated and lightly overconsolidated data is presented, showing the distinct behavior of heavily overconsolidated specimens. The failure envelope displays a non-linear behavior and the undrained shear strength (su) is reduced up to about 80% from a normally consolidated clay to a heavily overconsolidated clay with an OCR = 50. These observations demonstrate the importance of selecting appropriate design values in the presence of overconsolidated soils.
Download or read book The Behavior of Resedimented Boston Blue Clay at OCR4 in Cyclic and Post cyclic Undrained Direct Simple Shear written by Douglas Frederick Cauble and published by . This book was released on 1993 with total page 819 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Normalized Behavior of Resedimented Boston Blue Clay Using Geonor Direct Simple Shear Apparatus written by Imtiaz Ahmed and published by . This book was released on 1990 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Computer Methods and Geomechanics written by Amit Prashant and published by Springer Nature. This book was released on 2020-01-14 with total page 735 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents selected papers from IACMAG Symposium,The major themes covered in this conference are Earthquake Engineering, Ground Improvement and Constitutive Modelling. This volume will be of interest to researchers and practitioners in geotechnical and geomechanical engineering.
Download or read book A Comparison of the Behavior of Intact and Resedimented Boston Blue Clay BBC written by Robert Donald House and published by . This book was released on 2012 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resedimented Boston Blue Clay (RBBC) has been used as an analog test material for research at MIT for decades, due to local variability and the high cost of sampling. However, a comprehensive study of the differences in behavior between intact and resedimented BBC has not been completed recently. This thesis analyzes test data from laboratory CRS and triaxial tests conducted at MIT on intact and RBBC. Typical ranges for compression ratio, hydraulic conductivity, coefficient of consolidation, lateral stress ratio, preconsolidation pressure and peak friction angle of RBBC were within ranges for intact BBC. Ranges for secant friction angle, swell ratio and undrained strength for intact BBC overlapped and were lower than ranges reported for RBBC. Both intact and RBBC CRS data plotted to the right of the sedimentation compression line (SCL) in the Burland (1990) framework, showing significant structure and clay fabric. The Jaky equation (1948) was found to overestimate KO for intact BBC when using the peak friction angle, and underestimate KO when using the secant friction angle. Despite these differences, RBBC should continue to be used as an analog test material for studying clay behavior of BBC. Future research should expand the comparison into different test modes and additional clay mineralogies.
Download or read book The Influence of Effective Consolidation Stress on the Normalized Extension Strength Properties of Resedimented Boston Blue Clay written by Safia R. Moniz and published by . This book was released on 2009 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: (cont.) The results also show that the maximum secant modulus (Emax) was found to decrease exponentially with the vertical consolidation effective stress ([sigma]'vc) according to the equation: Emax = 450 x [sigma]'vc 0.74 This relationship was proposed by Santagata (1999) and was presented as: Emax [alpha] [sigma]'vc 0.74. There is not any apparent relationship between the lateral stress ratio and the vertical consolidation stress. The trends observed during shear in extension are consistent with observations made during Ko consolidation compression testing.
Download or read book Anisotropy of Resedimented Boston Blue Clay written by Tian Ho Seah and published by . This book was released on 1990 with total page 1063 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stress strain Characteristics from Undrained and Drained Triaxial Tests on Resedimented Boston Blue Clay written by Jamal E. Bensari and published by . This book was released on 1984 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Resedimentation of Boston Blue Clay and the Effects of Salinity on Its Index Properties written by Sang Yoon Lee and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Properties of Heavily Overconsolidated Clays written by Colin Paul Thomas and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterisation and Engineering Properties of Natural Soils written by T. S. Tan and published by CRC Press. This book was released on 2003 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first volume of a specialty 2-volume work contains 34 papers pertaining to the natural behaviour of diverse geomaterials found in different parts of the world. Each paper is organized along the outline: location and distribution, engineering geology, composition, state and index properties, structure, engineering properties, quality / reliability of data with reference to methods of sampling and testing, and relation to engineering problems. This extensive body of collated knowledge is integrated by three overview papers covering engineering geology, mechanical behaviour and engineering implications. Topics: Overview papers; Marine clays; Eastuarine Clays; Lacustrine clays; Stiff clays; Sands and other cohesionless soils; Residual and other tropical Soils; Weak rock.
Download or read book The Behavior of Normally Consolidated and Heavily Overconsolidated Clays at Low Effective Stress written by Harcharan Singh and published by . This book was released on 1971 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Investigation of Sampling Disturbance Effects in Resedimented Boston Blue Clay written by Joseph Victor Sinfield and published by . This book was released on 1994 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Properties of Heavily Overconsolidated Clays written by C. P. Thomas and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Geotechnical Engineering written by and published by . This book was released on 1989 with total page 986 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1996 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geomechanics written by Jerry A. Yamamuro and published by . This book was released on 2005 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt: GSP 143 contains 41 papers presented at the First Japan-U.S. Workshop on Testing, Modeling, and Simulation, held in Boston, Massachusetts, June 27-29, 2003.
