Geotechnical Testing Articles

  • Use and application of piezocone penetration testing in presumpscot formation

    Abstract: This paper examines the advantages and limitations of CPTu and SCPTu as an exploration method for geotechnical engineering of Presumpscot Formation. Discussion will include typical results of CPTu and SCPTu data for Presumpscot Formation, application and use for settlement prediction, bearing capacity analysis, slope stability evaluation, and seismic design considerations. ...

  • Modeling Pinch-Outs and Steep Topography in RockWorks - Case Study

    Summary Areas with complex stratigraphy (i.e. pinch-outs, folding, faults, etc) are not easily modeled in the borehole manager. One will often have to take the grids originally created with the borehole manager and manipulate them in the Utilities or in other programs. There are several tools available is the Utilities for manipulating your grids. Once you have edited your grids, you can ...


    By RockWare, Inc.

  • Use and application of Piezocone Penetration testing in Presumpscot Formation

    Abstract: This paper examines the advantages and limitations of CPTu and SCPTu as an exploration method for geotechnical engineering of Presumpscot Formation. Discussion will include typical results of CPTu and SCPTu data for Presumpscot Formation, application and use for settlement prediction, bearing capacity analysis, slope stability evaluation, and seismic design considerations. Intent is to ...

  • Q&A with Karan Jalota, Application Specialist - Roads & Rail

    In 2004, Dr. J.P. Giroud and Dr. Jie Han advanced the field of geosynthetics when they published their methodology for applying geosynthetics in unpaved structures in the ASCE Journal of Geotechnical and Geoenvironmental Engineering. The methodology has since been adopted by the Federal Highway Administration in 2008, and is considered at the forefront among industry professionals. Karan Jalota, ...


    By Nilex

  • Interview with Ronald Ebelhar, 2015 Chairman of the ASTM Board

    Ron Ebelhar has provided leadership in civil engineering projects and ASTM technical committee work since the 1970s. This year, he brings his experience to his elected position as chairman of the ASTM board of directors. You have worked on dozens of engineering projects since getting your degrees in civil engineering. What are some of the most interesting and challenging jobs you ...


    By ASTM International

  • ASTM’s Technical Information Resource

    All of ASTM International’s standards, papers and chapters, and books can be found, searched and subscribed to in one resource, ASTM Compass. A researcher investigates a new asphalt additive and tests with a standard from Committee C09 on Concrete and Concrete Aggregates. An ...


    By ASTM International

  • Guidelines for specification writing for Deep Soil Mixing

    Abstract: Deep Soil Mixing (DSM) was recently introduced into the United States as a geotechnical and environmental construction method. Primarily, DSM is used for deep foundation improvements. With the onset of this new technology, the need for guidelines for specification writing and the interpretation of testing results arises. This need would include guidelines for specifying construction ...


    By Geo-Con, Inc.

  • KeyLAB Expands KeyLAB Functionality for Concrete Testing, ATSM and Australian Standards

    Keynetix are pleased to announce that an upgrade to KeyLAB has been released today that includes a number of new features requested by users to help them manage their geotechnical and concrete laboratory. The new build expands the functionality of the system to assist laboratory managers who are conducting concrete testing, working in a NATA accredited laboratory or with the ASTM standards and is ...


    By Keynetix Ltd

  • Unsaturated flow in anisotropic heterogeneous media: a centrifuge study

    Anisotropic and heterogeneous flow in unsaturated porous media is dependent on saturation conditions, and currently there exist limited options that adequately model this phenomenon. Herein, a modified unsaturated flow apparatus (UFA) and scaled centrifuge tests are used to investigate variations in unsaturated hydraulic conductivity. The method is used to find the unsaturated hydraulic ...


    By Inderscience Publishers

  • Summary of Lab Test Results on Slopetame2

    The attached summary of laboratory tests on bare and sand filled rings presents compression resistance data relate to the load bearing capacity of our rings for various applications. Test Data from A.G.Wassenaar, Inc., Geotechnical Consultants, Denver, Colorado, 30 April 1991. This test used Forney Compression Testing Machine, 400,000 lb capacity, at rates of 200 lb/sec (unfilled rings) and 2000 ...


    By Invisible Structures, Inc.

  • Summary of Lab Test Results on Gravelpave2

    The attached summary of laboratory tests on bare and sand filled rings presents compression resistance data relate to the load bearing capacity of our rings for various applications. Test Data from A.G.Wassenaar, Inc., Geotechnical Consultants, Denver, Colorado, 30 April 1991. This test used Forney Compression Testing Machine, 400,000 lb capacity, at rates of 200 lb/sec (unfilled rings) and 2000 ...


    By Invisible Structures, Inc.

  • Random fields in SVSlope and SVFlux

    Geotechnical engineering, as a general practice, has always struggled with quantifying the significant amount of variability that can be present at any given site. There may be variability present in field sampling methods, equipment, lab testing procedures, level of training of field personnel, or many other such factors. One particular problematic aspect of slope stability analysis is the ...


    By SoilVision Systems Ltd.

  • Summary of Lab Test Results on Grasspave2

    The attached summary of laboratory tests on bare and sand filled rings presents compression resistance data relate to the load bearing capacity of our rings for various applications. Test Data from A.G.Wassenaar, Inc., Geotechnical Consultants, Denver, Colorado, 30 April 1991. This test used Forney Compression Testing Machine, 400,000 lb capacity, at rates of 200 lb/sec (unfilled rings) and 2000 ...


    By Invisible Structures, Inc.

  • Rigorous Theoretical Analysis of a Flow Pump Permeability Test

    With the growing importance of environmental issues in our society, extremely low-permeability geotechnical materials are being studied increasingly for their long-term stability and effectiveness in retarding the transport of hazardous wastes. Relatively rapid measurements of the permeability and specific storage of the materials, using relatively low hydraulic gradients, can be obtained with a ...


    By ASTM International

  • Model Size Effects in Centrifuge Models of Granular Slope Instability

    Two assumptions behind geotechnical laboratory testing are: first, that soil with grains small enough to behave as a continuum in a full-scale field situation will also behave as a continuum in a small laboratory test; and, second, that side boundary effects in a laboratory test are either negligible or, if not negligible, do not dominate behavior but are quantifiable so that a correction can be ...


    By ASTM International

  • Apparatus and Procedure for an In Situ Collapse Test

    Procedures for plate load testing in both shallow pits and at the bottom of a borehole are presented with descriptions of the required apparatus. The procedures were developed for collapsible soils but are expected to be useful for swelling soils as well. A key feature of the new procedures is that the wetted bulb of soil under the plate is controlled and its depth is measured at the end of the ...


    By ASTM International

  • Measurement of In Situ Density of Sand in a Chamber by Using a Thermal Conductivity Penetrometer

    Reliable in situ testing during soil exploration is of great help to geotechnical engineers in design considerations. This paper describes the theory and the laboratory test results for determination of the density of a sand with a quasi-static penetrometer by measuring its thermal conductivity. Effects of disturbance caused by the penetrometer have been studied. It is shown that it is possible ...


    By ASTM International

  • Geotechnical Properties of the Maryland-Sanders Lunar Simulant

    Densely compacted Maryland-Sanders ground basalt was examined for the similarity of its geotechnical properties to those estimated for lunar regolith. Minimum and maximum densities fell within the upper range of those calculated to exist on the moon. Cone penetration resistances measured on specimens compressed to 80 and 100% relative densities bracket those reported for stress equivalent depths ...


    By ASTM International

  • Geotechnical Properties of Municipal Solid Waste

    A geotechnical testing program was conducted to evaluate the engineering properties of aged solid waste samples retrieved from a landfill that began accepting waste as early as 1940. The conducted tests included water content, specific gravity, Atterberg limits, grain-size distribution, compaction, permeability, consolidation, triaxial, and direct shear. Maximum dry unit weight achieved using the ...


    By ASTM International

  • Suggested Modifications to ASTM Standard Methods When Testing Arid, Saline Soils

    Arid, saline soils are residual in nature, highly cemented, and formed in hot, arid environments. The presence of soluble and insoluble salts affects the geotechnical properties of these soils. Techniques used to determine the properties of these soils should take into consideration the presence of diagenetic minerals that are considered part of these soils. In this investigation, a typical arid, ...


    By ASTM International

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