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KSE DCP K-100 User Manual

Dynamic cone penetrometers
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Summary of Contents for KSE DCP K-100

  • Page 2 SAFETY N O T I C E DO NOT PUT HAND NEAR THE ANVIL WHEN HAMMER IS RAISED KEEP ONE HAND ON THE HANDLE WHILE O P E R A T I N G THE DCP ALWAYS SECURE THE HAMMER AND/OR THE ASSEMBLED DCP INSTRUMENT WHEN PLACING IT ON ANY FLAT ELEVATED SURFACE TO PREVENT IT FROM ROLLING OFF AND CAUSING PERSONAL INJURY OR...

  • Page 3: Table Of Contents

    INDEX PART I: DCP WITH VERTICAL SCALE Application Description Procedures Correlations PART II: DCP WITHOUT VERTICAL SCALE Application Description Procedures Correlations PART III Maintenance References Warranty Parts List...

  • Page 4: Part I: Dcp With Vertical Scale

    PART I DCP With Vertical Scale...

  • Page 5: Application

    Thank you for your purchase of a Kessler DCP (Dynamic Cone Penetrometer), licensed to Kessler Soils Engineering Products, Inc. by the U.S. Army Corps of Engineers (Patent No. 5,313,825). The Kessler DCP is a durable and reliable Penetrometer designed for field soil testing and measuring. 1.
  • Page 6 Handle Single Mass OR Dual-Mass Hammer 17.6 lb (8 kg) OR 10.1 lb (4.6 kg) Upper Rod Anvil with Quick-Connect Pin Upper Attachment Drive Rod 5/8 in (16 mm) diameter rtical Scale Foot Tip (Reusable Hardened Point or Disposable Cone) Figure 1–Schematic of DCP Device...

  • Page 7: Description

    The KESSLER DCP can be used to estimate the strength of in situ materials underlying a bound or highly stabilized layer by first drilling or coring an access hole. NOTE: The DCP may be used to assess the density of a fairly uniform material by relating to penetration rate on the same material.
  • Page 8 Upper rod Anvil Quick connect pin End cap Drive rod Figure 3–Quick Connect Assembly (Patent Pending)

  • Page 9: Specifications

    Figure 4–Adapter with two Disposable Cones Figure 5– Reusable Hardened Point The instrument is manufactured to the following specifications: (1) Hammer weight measurement of 17.6 lb (8kg) tolerance is 0.022 lb(0.010kg). (2) Hammer weight measurement of 10.1 lb (4.6kg) tolerance is 0.022 lb (0.010kg). (3) Drop of hammer measurement of 22.6 in (575 mm) tolerance is 0.039 in (1.0 mm) (4) Tip included angle measurement of 60...
  • Page 10 Replacement and Optional DCP equipment can be found at www.kesslerdcp.com, including: - 12”, 30” and 37.5” Drive Rods - 48” Drive Rod - 12” and 24” Extension Rods - Magnetic Ruler - Magnetic Ruler Printer Other equipment used to make an access hole through a bound layer may include: - a rotary hammer drill or coring appartus capable of drilling a minimum diameter hold of 1 inch (25mm).

  • Page 11: Procedures

    3. PROCEDURES 3.1 Equipment Check 3.1.1 Before beginning a test, check to ensure the Drive Rod is straight by rolling the rod on a flat surface. Note: The Drive Rod may bend if driven beyond refusal (see para 3.3.3). 3.1.2 The Hardened Point must be checked to ensure the 3 mm flat is discernible.
  • Page 12 3.2.4 Drive Rod (12”) with 12” or 24” Extension- only for material where DCP advances more than 1” per blow (CBR < 8%) and always use Disposable Cones. Screw one 12” or 24” Extension Rod into the 12” Drive Rod and tighten with wrenches. Reassemble DCP hammer assembly and restart the test.
  • Page 13 3.3.3 Refusal- The presence of aggregates > 2” or rock strata will either stop further penetration or deflect the drive rod. If, after 3 blows, the device has not advanced more than 0.08 in (2 mm) or the handle has deflected more than 3 in (75 mm) from the vertical position, stop the test and move the device to another test location.
  • Page 14 soak into or penetrate the material to be tested. A wet/dry vacuum or suitable alternative is used after completion of drilling or coring to remove loose material and fluid from the access hole before testing. To minimize the extent of the disturbance from the rotary hammer, drilling should not be taken completely through the bound layer, but stopped short by about 10 to 20 mm.
  • Page 15 Figure 6A–Two person, traditional method One person operates DCP while the other person records penetration rate Figure 6B–One person One person operates DCP, then marks the tape on the Vertical Scale. cumulative penetration and number of blows between marks on a DCP data sheet or in the Excel template.
  • Page 16 3.6.4 Magnetic Ruler (Figure 7)- The optional Magnetic Ruler is a battery-operated AAA (Qty. 6), data-collection device for the Dynamic Cone Penetrometer (DCP). It displays depth, blows, mm/blow, cumulative mm/blow , and cumulative blow/inch in SI and English. The correlations are CBR (California bearing ratio) in %;...
  • Page 17 Figure 7–Magnetic Ruler...

  • Page 18: Correlations

    4. CORRELATIONS 4.1 The CBR may be estimated using the DCP index (column 6 on the DCP Data Sheet) and Table 1 for each set of readings. First, the DCP index is computed for the respective penetration between readings. The penetration per blow is then used to estimate in situ CBR or shear strength using the appropriate correlation for the reference.
  • Page 19 DCP DATA SHEET Date: 7 July 2005 Project: Forest Service Road Personnel: JLS & PAK Location: STA 30+50, 1 M RT of C/L Hammer Weight: 17.6lb (8kg) Depth of zero point below: Weather: Overcast, 25°C, (72° F) Material Classification: GW/CL Water Table Depth: Unknown Pavement conditions:...
  • Page 20 Table 1–Tabulated Correlation of CBR versus DCP Index DCP Index DCP Index DCP Index mm/blow mm/blow mm/blow <3 69-71 72-74 75-77 78-80 81-83 84-87 88-91 92-96 10-11 97-101 102-107 49-50 108-114 115-121 122-130 53-54 131-140 141-152 18-19 56-57 153-166 20-21 166-183 59-60 22-23...

  • Page 21: Part Ii: Dcp Without Vertical Scale

    PART II DCP Without Vertical Scale...

  • Page 22: Application

    5. APPLICATION This application describes measurement of the penetration rate of the KESSLER DCP (Dynamic Cone Penetrometer) with a Single-Mass Hammer and quick-connect Drive Rod in field soil testing without a Vertical Scale. This procedure is used to assess the in place strength of undisturbed soil and/or compacted materi- als.

  • Page 23: Description

    6. DESCRIPTION The KESSLER DCP consists of an upper assembly with a Single Mass Hammer, a Drive Rod and a tip. The upper rod, drive rod, handle and anvil are stainless steel. The Drive Rod is held in place with a Quick-Connect Pin (Fig.3) through the anvil.

  • Page 24: Procedures

    7. PROCEDURES 7.1 Equipment Check 7.1.1 Before beginning a test, check to ensure the Drive Rod is straight by rolling the rod on a flat surface. NOTE: The Drive Rod may bend if driven beyond refusal (see para 3.3.3). 7.1.2 The Hardened Point must be checked to ensure the 3 mm flat is discernible.
  • Page 25 7.2.3 Extraction - Following completion of the test, extract the device by driving the hammer upward against the handle. Use a smooth upward movement and do not throw the hammer against the handle. 7.3 Caution •DO NOT drop the hammer after refusal. •DO NOT throw the hammer upwards.

  • Page 26: Correlations

    8. CORRELATIONS Tables 3, 4, and 5 are derived from the following equation recommended by the US Army Corps of Engineers, where PR is the DCP penetration rate in mm per This procedure is used to assess the in place strength of undisturbed soil and/or compacted materials.
  • Page 27 Table -3 - Tabulated Correlaltion of blows per 2” penetration verses CBR and PSF Hammer Hammer Soil type Soil type 17.6 lbs 10.1 lbs Blows/2” Blows/2” Other Other 1240 1270 1960 1720 1130 2560 2130 1660 3100 2520 2230 3600 2880 2840 4060...
  • Page 28 Table -4 - Tabulated Correlation of blows per 4” penetration verses CBR and PSF Hammer Hammer 17.6 lbs 10.1 lbs Soil type Soil type Blows/4” Blows/4” Other Other 1240 1030 1620 1280 1960 1510 2270 1730 1140 2570 1940 1390 2840 2140 1660...
  • Page 29 Table -5 - Tabulated Correlation of blows per 6” penetration verses CBR and PSF Hammer Hammer 17.6 lbs 10.1 lbs Soil type Soil type Blows/6” Blows/6” Other Other 1240 1500 1110 1740 1280 1960 1430 2170 1580 2370 1730 1140 2570 1870 1310...

  • Page 31: Maintenance

    PART III Maintenance References Warranty Parts List...
  • Page 32 9. MAINTENANCE Testing with the KESSLER DCP causes wear on the metal parts that make up the device. In order to ensure maximum service life, periodic inspections of the KESSLER DCP for fatigue or damage are recommended. Any parts found to be fatigued or damaged should be repaired by the manufacturer, or replaced with Kessler DCP parts.
  • Page 33 the Dynamic Cone Penetrometer (DCP), Technical Report No. GL-94-17, Air Force Civil Engineering Support Agency, U.S. Air Force, Tyndall Air Force Base, Florida. (8) Siekmeier, J.A., Young, D., and Beberg, D., (1999), Comparison of the Dynamic Cone Penetrometer with Other Tests During Subgrade and Granular Base Characterization in Minnesota, Nondestructive Testing of Pavements and Backcalculation of Moduli: Third Volume, ASTM STP 1375, S.D.
  • Page 34 11. WARRANTY 1. KESSLER SOILS ENGINEERING PRODUCTS, INC. guarantees this product to be manufactured in the U.S. A. to the specifications and standards developed by the Department of the Army, Corps of Engineers, Waterways Experiment Station and recorded under patent number 5,313,825 entitled “Dual Mass Dynamic Cone Penetrometer.”...
  • Page 35 12. PARTS LIST ITEM DESCRIPTION K010 K-100 User’s Manual & Software K1312 Drive Rod, 12” - Stainless K1330 Drive Rod, 30” - Stainless K133775 Drive Rod, 37 3/4” - Stainless K133775S Drive Rod, 37 3/4” - Spring Steel K1348 Drive Rod, 48” - Stainless K1348S Drive Rod, 48”...
  • Page 36 KSE form 300, 20 AUGUST 2014 K100UM300...

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