Cone Penetrometer Articles | Environmental XPRT

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 ...

Mar. 1, 1991

By ASTM International

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 ...

Mar. 23, 2018

By RockWare, Inc.

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 ...

Sep. 1, 1989

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 ...

Mar. 1, 1987

By ASTM International

Design of a Large Calibration Chamber

The design and operation of a conceptually simple, low-cost chamber for calibration of cone penetrometers and other in situ devices is described. The chamber weighs over 5500 kg and houses a 4400-kg soil sample that is 1.5 m in diameter and height. Operations in the chamber are automated using a self-equilibrating hydraulic insertion frame, a soil pluviation system for sand placement, a vacuum ...

Mar. 1, 1990

By ASTM International

Forensic investigation of flexible pavements in Ohio

This paper presents the results of a forensic investigation initiated by the Ohio Department of Transportation in 2006 to determine the reasons for differences in performance of flexible pavements in Ohio. Ten projects with average performance and ten projects with excellent performance were selected for study. Falling Weight Deflectometer and ride quality measurements were taken along all ...

May 2, 2013

By Inderscience Publishers

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 ...

Dec. 1, 1992

By ASTM International

Liquid Limit Determination—Further Simplified

In recent years the cone penetration method to determine liquid limit of soils has gained popularity and acceptance. This paper advances two more specific potentials of this method by which (1) the liquid limit can be determined almost instantaneously and (2) the liquid limit of soils, also having particles coarser than 425 µm can be directly determined. The interrelation between water content ...

Sep. 1, 1987

By ASTM International

Characterization of pit latrines to support the design and selection of emptying tools in peri-urban Mzuzu, Malawi

The urban areas of many low-income countries must balance a rising demand for pit latrines for household sanitation provision against limitations in space, resulting in a need for pit latrine emptying services. This study was undertaken in the peri-urban neighborhood of Area 1B in the city of Mzuzu, Malawi, to examine the characteristics of household pit latrines for designing and selecting ...

Jan. 24, 2017

By IWA Publishing

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 ...

Jun. 1, 1993

By ASTM International

Detailed hydraulic assessment using a high-resolution piezocone coupled to the GeoVIS

Department of Defense (DoD) ground water assessment and remediation projects require cost effective methods for determining the direction and rate of ground water and contaminant flow. Monitoring wells have typically been used to estimate these parameters. However, detailed three-dimensional ground water and contaminant flow pathways cannot typically be delineated using monitoring well data. ...

Apr. 30, 2008

By The Hazardous Waste Clean-Up Information (CLU-IN)

Detailed hydraulic assessment using a high-resolution piezocone

Department of Defense (DoD) ground water assessment and remediation projects require cost effective methods for determination of the direction and rate of ground water and contaminant flow. Monitoring wells have typically been used to estimate these parameters. However, detailed three-dimensional ground water and contaminant flow pathways cannot typically be delineated using monitoring well data. ...

Jun. 1, 2008

By US EPA - The Office of Solid Waste (OSW)

Triad use at Naval Base San Diego saves an estimated 6 years and US$3m for site investigation

The U.S. Naval Facilities Engineering Command Southwest (NAVFAC SW) used the Triad approach to collect an integrated hydrogeologic and chemical dataset for expediting and optimizing characterization of a volatile organic compound (VOC) plume at Naval Base San Diego (NBSD), CA. The 295-acre 'IR Site 22' was identified in 2003 when VOC concentrations reaching 100 mg/L were reported in an upgradient ...

Jan. 1, 2009

By USEPA - Technology Innovation and Field Services Division (TIFSD)

Assessment, Field Testing, and Conceptual Design for Managing Dense Non-Aqueous Phase Liquids (DNAPLs) at a Superfund Site

AbstractDense non-aqueous phase liquids (DNAPL) greatly complicate groundwater remediation because the heavy DNAPL will sink and follow topographic lows within an aquifer system, and because DNAPL is difficult to extract using conventional pumping methods. These problems are now ...

Jan. 1, 1996

Standard Chlorine of Delaware Remediation

By designing a 70-foot deep barrier wall, Black & Veatch was able to cut off contaminant source areas from a creek near New Castle, Delaware. The groundwater treatment system that Black & Veatch designed prevents site contamination from reaching the underlying drinking water aquifer. The Standard Chlorine of Delaware Site is a 65 acre area including an abandoned chlorobenzene ...

Apr. 11, 2007

By Black & Veatch Corporation

Vapor-Phase Biofilters Show Promise for Treating High VOC Emissions

Evaluating the Feasibility of Natural AttenuationUsing natural attenuation to remediate organic compounds in groundwater has gained popularity. In some cases, this process can reduce contaminant levels to below risk-based corrective action criteria or regulatory standards without implementing additional remedial action alternatives. However, it is often difficult to prove that natural ...

Jan. 1, 1997

Vapor-Phase Biofilters Show Promise for Treating High VOC Emissions.

Evaluating the Feasibility of Natural AttenuationUsing natural attenuation to remediate organic compounds in groundwater has gained popularity. In some cases, this process can reduce contaminant levels to below risk-based corrective action criteria or regulatory standards without implementing additional remedial action alternatives. However, it is often difficult to prove that natural ...

Jan. 1, 2001

Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures

Untitled Document Background The Regional Superfund Ground Water Forum is a group of ground-water ...

Dec. 1, 1995

By Solinst Canada Ltd.

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