cone penetration testing system Articles

  • Simplification of Soil Classification Charts Derived from the Cone Penetration Test

    This paper presents a semi-empirical approach to simplify existing CPT and PCPT soil classification charts. This approach is based on two tendencies in current charts, namely soil type and in situ soil state. These charts may be simplified into one-dimensional soil classification systems by linear conformal mapping. Accordingly, several charts are simplified, and a comparison to in situ testing ...


    By ASTM International

  • A New Fall Cone Device for Measuring the Undrained Strength of Very Weak Cohesive Soils

    A new fall cone device capable of measuring undrained shear strength of extremely soft cohesive soils is described and evaluated. The Automated MIT Fall Cone has a unique mechanical counterweight system that enables the use of effective cone weights as low as 0.005 N. This weight is an order of magnitude lower than possible with a standard fall cone apparatus. The new device also uses a data ...


    By ASTM International

  • Preparation of Large-Size Cohesive Specimens for Calibration Chamber Testing

    This paper describes the design of an automated slurry consolidometer and calibration chamber system used to prepare largesize cohesive soil specimens for testing in-situ devices, model foundations, and ground anchors. A two-stage technique for the preparattion of homogeneous cohesive specimens subjected to a known stress history is described. Briefly summarized are the data acquisition/control ...


    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 ...


    By ASTM International

  • Incotec Bolivia CPT case study

    Vertek partner Incotec recently entered the cone penetration test business area with the purchase of a Vertek S4 Push System. Learn more about the geotechnical market in their home country of Bolivia and  ...

  • Inland oil spill clean up case study

    Introduction The essential strategy for inland spill clean up techniques should be containment, recovery and temporary storage. Secondary needs will include transportation and possible disposal - or recycling. It is important to discover the source of the spill which might not be straight forward. A steady slow seepage from a leaking disused oil storage tank may be very difficult ...

  • CPT Case Study: GEI Consultants

    A CPT Q&A session with GEI Consultants Where do you perform your CPT work?: We perform CPT’s on earthen dams/embankments, river sediment depths, USCOE projects from Ft. Peck Montana to New York, RR alignments, bridge embankments, and Power plants. A little of everything you can imagine from Water, RR bridges, Landfills, stability of tail basins for the ...

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