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A Geotechnical Investigation of Rock-Like Material Lining Joints in Shale Bedrock

2009; Geological Society of America; Volume: 15; Issue: 4 Linguagem: Inglês

10.2113/gseegeosci.15.4.261

1558-9161

C Rauber, Abdul Shakoor,

Geotechnical and construction materials studies

Research Article| November 01, 2009 A Geotechnical Investigation of Rock-Like Material Lining Joints in Shale Bedrock CHRISTOPHER C RAUBER; CHRISTOPHER C RAUBER 1City of Syracuse, Department of Engineering, Design & Construction Division, Room 401, City Hall, Syracuse, NY 13202 Search for other works by this author on: GSW Google Scholar ABDUL SHAKOOR ABDUL SHAKOOR 2Department of Geology, Kent State UniversityKent, OH 44242 Search for other works by this author on: GSW Google Scholar Author and Article Information CHRISTOPHER C RAUBER 1City of Syracuse, Department of Engineering, Design & Construction Division, Room 401, City Hall, Syracuse, NY 13202 ABDUL SHAKOOR 2Department of Geology, Kent State UniversityKent, OH 44242 Publisher: Association of Environmental & Engineering Geologists First Online: 02 Mar 2017 Online ISSN: 1558-9161 Print ISSN: 1078-7275 Copyright © 2009 EEGS Environmental & Engineering Geoscience (2009) 15 (4): 261–271. https://doi.org/10.2113/gseegeosci.15.4.261 Article history First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation CHRISTOPHER C RAUBER, ABDUL SHAKOOR; A Geotechnical Investigation of Rock-Like Material Lining Joints in Shale Bedrock. Environmental & Engineering Geoscience 2009;; 15 (4): 261–271. doi: https://doi.org/10.2113/gseegeosci.15.4.261 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyEnvironmental & Engineering Geoscience Search Advanced Search Abstract A small number of sites in Pennsylvanian-age shale bedrock in Ohio, West Virginia, and Pennsylvania contain joints lined with rock-like material, similar in appearance to infilling material. Three unstable slopes, one each at Belle Valley, Ohio, East Steubenville, West Virginia, and Hopewell, Pennsylvania, were selected to investigate engineering properties of the lining material and the adjacent shale bedrock, as well as the role of lining material in contributing to slope instability. A detailed line survey was conducted at each site to determine the orientation and continuity of all joints intercepted by the line, and to examine the nature of the material lining the joints. The principal joint sets from each site were analyzed using stereographic projection techniques to determine potential modes of failure. The engineering properties determined for the lining material and the adjacent bedrock included Atterberg limits, grain-size distribution, slake durability, unconfined compressive strength, and shear strength parameters. The lining material was also examined in thin sections and by X-ray diffraction. This study shows that the rock-like material lining the joints consists of original shale bedrock altered by precipitation of hematite (Fe2O3), pyrolusite (MnO2), and goethite (FeOOH) from groundwater flowing through the joints. The lining material is stronger and more durable than the adjacent shale bedrock. The friction angle between the lining material and shale bedrock is higher at the Belle Valley site and lower at the East Steubenville and Hopewell sites. Wedge failures are the dominant mode of failure at all three sites. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.