Cone Penetrometers Articles

  • Using a Digital Cone Penetrometer to Locate Clandestine Grave Sites

    Abstract Law enforcement officials face the problem of locating suspected burial sites connected to criminal activity. Two case studies describe the collection of soil compaction data and subsequent analysis to locate a test burial at a research site. Forensic scientists use the RockWorks software from RockWare, Inc. to analyze the data and display three-dimensional views of the relative ...


    By RockWare, Inc.

  • Penetrologger CBR German Federal Defence Force - Case Study

    Project name Penetrologger CBR German Federal Defence Force Client German Federal Defence Force Country Germany Background and objective Three years ago, Eijkelkamp started a project together with the German Federal Defence Force to develop a new type of ...


    By Eijkelkamp Soil & Water

  • 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

  • Shear Strength of Very Soft Clay-Sand Mixtures

    To treat a deposit of clay slurry in situ, sand is often added with the aim of trapping the sand in the upper portion of the slurry. The presence of the trapped sand may directly improve the shear strength of the slurry or contribute indirectly to the improvement by accelerating the consolidation. For this treatment to be effective, an important consideration is the improvement in the shear ...


    By ASTM International

  • A Statistical Methodology to Analyze the Effect of Changes in Testing Technology on Measurement Results

    In the field of soil mechanics and highway engineering, there is great interest in the comparison of two different instruments or two different measuring technologies that measure the same characteristics of given items (or samples). This interest holds also for comparison of semi-identical instruments having minor changes in a given testing technology. All such comparisons involve statistical ...


    By ASTM International

  • The Influence of Test Procedure on Correlation of Atterberg Limits with Liquefaction in Fine-Grained Soils

    Liquefaction potential of fine-grained soil deposits is today judged, in part, based on an observed correlation of Atterberg limits to field performance of soils shaken by the 1976 Tangshan earthquake in the People´s Republic of China (PRC). Criteria were subsequently developed and adopted into current liquefaction potential evaluation practice without regard to the test procedures used to ...


    By ASTM International

  • Calibration of a Dynamic Penetrometer for Compaction Quality Control of Boiler Slag

    A dynamic penetrometer was designed for the purpose of evaluating compaction quality in fills constructed with boiler slag. Laboratory and field calibration tests were conducted to study the effect of densification on dynamic penetration resistance. The effects of specimen preparation method (pluviation and impact compaction) and saturation on dynamic penetration resistance were investigated in ...


    By ASTM International

  • Small Diameter Piston Sampling with Cone Penetrometer Equipment

    A small diameter piston sampler that can be operated by a cone penetrometer rig has been developed specifically for recovery of sand and clay samples under conditions where sample recovery using ordinary means is difficult. The 22-mm-diameter sample that is recovered in a polythene sheath is valuable for visual examination of the soil rather than for most laboratory testing purposes. Provided the ...


    By ASTM International

  • Studies with Centrifuge Vane and Penetrometer Apparatus in a Normal Gravity Field

    Small vane and penetrometer devices have been developed to measure soil properties in models during centrifuge operation. To aid the interpretation of vane data from centrifuge models a series of tests was conducted in cakes of kaolin clay in a normal gravity field. In the experimental program the effects of disturbance during insertion, delay between insertion and rotation, rate of rotation and ...


    By ASTM International

  • In-Situ Shear Modulus of Sands by a Flat-Plate Penetrometer: A Laboratory Study

    A flat-plate penetrometer, similar to the flat-dilatometer, has been constructed and used in a series of laboratory experiments to estimate the shear modulus of cohesionless soils under repetitive loading conditions. Tests were performed on sand specimens prepared at different relative densities and loaded vertically to simulate the overburden pressure at different depths. Results indicate, ...


    By ASTM International

  • Liquid and Plastic Limits as Determined from the Fall Cone and the Casagrande Methods

    The shortcomings of the conventional methods of determining the liquid limit using the Casagrande apparatus and the plastic limit by rolling soil balls by hand have led to the investigation of the fall cone (cone penetrometer) as an alternative. The use of the fall cone test to determine the liquid limit has long been adopted by several countries, but the proposal to use this test to determine ...


    By ASTM International

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