soil resistance Articles

  • Grounding resistance measurement using vertically driven rods near residential areas

    Soil resistivity is usually measured at the selected site either for new installation or in the existing grounding system. In this paper, soil resistivity and grounding resistance are measured at the four selected sites of the Lambak Kanan, a residential area of Brunei Darussalam. The measured soil resistivities are then compared with the resistivities calculated by CYM GRD software and the rms ...


    By Inderscience Publishers

  • Grounding resistance measurement by grid electrode in Brunei Darussalam

    This paper presents soil resistivity and grounding resistance measurements. The measured soil resistivity is used as the input of CYME GRD software for simulation purpose. The rms error between the measured and the calculated ground resistivity is found to be 4.38%. The grounding resistances are measured by placing the electrode as single and double rectangular grids horizontally into the soil. A ...


    By Inderscience Publishers

  • Empirical relationship between soil permeability and resistivity, and its application for determining the groundwater gross recharge in Marpoyan Damai, Pekanbaru, Indonesia

    In this article, a novel approach to measuring the gross groundwater recharge rate over a district area is presented. It is based on soil resistivity measurements. It is nondestructive, and allows quick, low-cost mapping of infiltration over large areas, which makes it particularly relevant for land planning. An empirical relationship between soil resistivity, ρ, and permeability, ...


    By IWA Publishing

  • Determination of the cutting resistance model of soil

    Excavation methods depend on the rock conditions, location, etc. This paper investigated the penetration of an excavator blade into soil. Finite element modelling using the ABAQUS software and analytical methods were used to predict the horizontal forces due to blade movement with varying soil parameters such as friction angle, cohesion coefficient, and angle between soil and blade. The results ...


    By Inderscience Publishers

  • Exploring Soil Resistivity in Lima, Peru - Case Study

    In April 2013, in partnership with SensorVital and Pontificia Universidad Católica del Perú, AGI conducted a workshop focused on exploring the resistivity of shallow soil at Pontificia Universidad ...


    By Advanced Geosciences, Inc.

  • The Vane Cone: A New Device for Soil Shear Strength Measurement

    A considerable number of in-situ tests have been devised for measuring field soil shear strength parameters. These tests include, among many others, cone penetration and vane shear devices. The conventional form of each of these two devices controls the type of soil deformation, which may limit the use of the measured soil shear resistance data. In this study both vane and cone devices were ...


    By ASTM International

  • Describing soils: Calibration tool for teaching soil rupture resistance

    Rupture resistance is a measure of the strength of a soil to withstand an applied stress or resist deformation. In soil survey, during routine soil descriptions, rupture resistance is described for each horizon or layer in the soil profile. The lower portion of the rupture resistance classes are assigned based on rupture between thumb and forefinger. The tactile sense of the pressure can vary ...

  • Use of CPTu to Estimate Equivalent SPT N60

    Although the CPTu offers many advantages over the SPT, it may be desirable in some instances to use SPT-based experience of soil behavior. An algorithm is presented here for estimation of equivalent N60 values directly from the CPTu without resort to soil sampling. The proposed algorithm is based on data and trends reported in the literature; the algorithm is tested against new data obtained for ...


    By ASTM International

  • Clay-on-Steel Ring Shear Tests and Their Implications for Displacement Piles

    This paper presents results from ring shear tests involving shearing of clay against steel interfaces. The effect of rate of shearing on the shear resistance between the soil and steel at large displacements was examined. It is shown that the rate of shearing has a significant effect on the shear resistance between soil and steel. The implications of the results for the behavior of displacement ...


    By ASTM International

  • A New Approach to Measuring Dilatancy in Saturated Sands

    The determination of in situ properties of sand has proven to be a difficult objective, especially when it includes assessing volume change characteristics like dilatancy. Difficulty in obtaining representative undisturbed specimens as well as problems with extrapolating laboratory test results to the field has caused many to place increased reliance on in situ testing. One such test that is ...


    By ASTM International

  • Testing of Geotechnical Fabric for Use as Reinforcement

    Twenty-seven commercially available petrochemical-based geotechnical fabrics, both woven and nonwoven, and one fiberglass fabric were evaluated for suitability as reinforcement in an embankment test section to be constructed on soft foundation at Pinto Pass in Mobile Harbor, Ala. by the U.S. Army Corps of Engineers Mobile District. All fabrics were subjected to initial testing in uniaxial tension ...


    By ASTM International

  • The Behavior at the Shrinkage Limit of Clay Undergoing Drying

    In this paper, possible links between the shrinkage limit and distinct changes in other properties of a clay soil undergoing drying are discussed. These properties include the volumetric air content of the soil, the heat of wetting, the tensile strength, the total suction, and the thermal resistivity of the soil. The distinct changes are of interest in themselves, and possible explanations for ...


    By ASTM International

  • Guaranteed fixed price remediation of PCE and TCE in soil confidential client, Chicago, IL

    TRS Group, Inc. (TRS) as a subcontractor to Levine Fricke provided a guaranteed fixed price remediation of tetrachloroethene (PCE) and trichloroethene (TCE) in soil using Electrical Resistance Heating (ERH) at a confidential site located in Chicago, Illinois. Unique aspects of this project included using a sheet pile wall as one continuous electrode (120 feet long) and using individual sheet pile ...


    By TRS Group, Inc.

  • Guaranteed fixed price remediation of TCE, PCE and VC in soil and bedrock under an active manufacturing facility confidential client Greensburg, IN

    TRS Group, Inc. (TRS), as a subcontractor to St. John, Mittelhauser and Associates (SMA) provided a guaranteed fixed price remediation of trichloroethene (TCE), tetrachloroethene (PCE) and vinyl chloride (VC) in soil using Electrical Resistance Heating (ERH) at a confidential site located in Greensburg, IN. Unique aspects of this project included: Operation of one ERH system to treat four ...


    By TRS Group, Inc.

  • TeCA remediation using ERH in soil, fractured rock and groundwater U.S. naval station Annapolis, Maryland

    TRS Group, Inc. (TRS) conducted a source area remediation at the US Naval Academy in Annapolis, Maryland. UsingElectrical Resistance Heating (ERH), soil, fractured rock and groundwater were treated for 1,1,2,2-Tetrachloroethane (TeCA) and Trichloroethene (TCE). Performing as a subcontractor to Shaw Environmental & Infrastructure, TRS remains the only company to successfully use ERH to ...


    By TRS Group, Inc.

  • Large-Scale Triaxial Compression Testing of Geocell-Reinforced Granular Soils

    The paper describes the results of a series of large-scale triaxial tests carried out on 200-mm-high isolated geocell-soil composite specimens and unreinforced soil specimens. Two different aggregate soils were used in the test program. The reinforced specimens were tested with a height-to-diameter ratio of unity, which matches the dimensions of these systems in a typical base reinforcement ...


    By ASTM International

  • Using Soil Stabilization Technology to Build Roads

    We consider Soil as the basic foundation for various civil engineering structures including roads. It is necessarily important to resist the loads without failure. In some places, soil may be weak which cannot resist the oncoming loads. In such cases, soil stabilization using K31-APS acrylic co polymer soil stabilizer is needed. Soil stabilization can be defined as changing the soil properties by ...


    By K31 Road Engineering, LLC.

  • Ground Module

    BEST Grounding Module Performance and characteristics of BEST grounding module: The low-resistance grounding module is a non-metallic material-based grounding body composed of non-metallic minerals with good conductivity and chemical stability, metal ground rods, electrolytes and humectants.   Ground ...

  • Laboratory Investigation on Bitumen Coating and Polyethylene Sheeting for Downdrag Reduction in Piles: A Comparative Study

    In this study, the polyethylene sheeting method for downdrag mitigation in piles has been investigated along with the conventional bitumen coating method. A large number of concrete blocks were prepared with different arrangements of bitumens and polyethylene sheets and tested in the laboratory using direct shear apparatus. The shear resistance of the concrete-bitumen-soil specimens was ...


    By ASTM International

  • ArmorMax stands up to Hurricane Gustav and IKE case study

    When Hurricane Katrina made landfall on August 29, 2005 it caused devastating flood damage to large portions of southeastern Louisiana—but it was not the only hurricane to hit the area that year. Hurricane Rita made landfall in late September, causing catastrophic tidal inundation to the community of Lafitte as it passed south of Jefferson Parish, Louisiana. One of the many levees that ...

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