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Determine The In-Situ Dry Density Of Soil By Core Cutter Method

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This test is done to determine the in-situ dry density of soil by core cutter method as per IS: 2720 (Part XXIX) – 1975.The apparatus needed for this test is

i) Cylindrical core cutter
ii) Steel dolley
iii) Steel rammer
iv) Balance, with an accuracy of 1g
v) Straightedge
vi) Square metal tray – 300mm x 300mm x 40mm
vii) Trowel

Procedure Determine The In-Situ Dry Density Of Soil By Core Cutter Method
i) The internal volume (V) of the core cutter in cc should be calculated from its dimensions which should be measured to the nearest 0.25mm.

ii) The core cutter should be weighed to the nearest gram (W1).

core-cutter-method

iii) A small area, approximately 30cm square of the soil layer to be tested should be exposed and levelled. The steel dolly should be placed on top of the cutter and the latter should be rammed down vertically into the soil layer until only about 15mm of the dolly protrudes above the surface, care being taken not to rock the cutter. The cutter should then be dug out of the surrounding soil, care being taken to allow some soil to project from the lower end of the cutter. The ends of the soil core should then be trimmed flat in level with the ends of the cutter by means of the straightedge.

iv) The cutter containing the soil core should be weighed to the nearest gram (W2).

v) The soil core should be removed from the cutter and a representative sample should be placed in an air-tight container and its water content (w)

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REPORTING OF RESULTS
Bulk density of the soil g cc Y = [W2 – W1]/ V g/cc
Dry density of the soil g cc Yd = 100Y/[100+w] g/cc

Average of at least three determinations should be reported to the second place of decimal in g/cc.
A sample proforma for the record of the test results is given below

in-situ-data

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Comments
  • u.v.s.rao April 5, 2009 at 5:33 am

    whether sand replasement test can be used for testing semi densebituminous concrete

  • praveen April 7, 2009 at 6:03 am

    very interesting to browse the entire subject in internet.

  • N.Uma Sentil May 8, 2009 at 5:29 pm

    what is bituminous sheet?whether this item being used in higways if used what is the methodology of execution and quality control checks.

  • rajesh June 18, 2009 at 1:06 pm

    sir , please tell me the cement, sand ,aggregate ,and water consumption of all types of mixes and its calculation.And also for plastering.Thank you.

  • J.K.Sahu July 13, 2009 at 1:05 pm

    what is the procedure for determine the %age of compaction of soil by procyor dencity test?.

  • keyur raijiwala July 18, 2009 at 9:15 am

    what is minimun soil density requier for embackment of earthwork?
    is it 1.8 or anything ease.?

  • tarun March 10, 2010 at 11:48 am

    at my site backfilling is going on…
    I hv..
    Core cutter appratus and a moisture meter in my lab..
    Can u plz tell what can i do for compaction testing of soil with use of these appratus…
    Plz rply…
    Thnk u…

  • Sanjay s. bijwe April 2, 2010 at 8:01 am

    I read the detail core cutter method. It is found useful to us.I will always in
    contact with your website.

  • Muhammadh Fahdan September 29, 2010 at 1:36 am

    As a civil engineering student I take this site as an opportunity to improve my knowledge on the dynamic field of civil engineering and its aspects. This site helps a lot on practicals which are essential in civil engineering. We too recently had the core cutter method practical simultaneously with the sand cone method.

  • rajesh October 6, 2010 at 7:15 am

    please clarify compaction test shall be conducted for bottom layer of open foundation or not

  • Muhammad Zain October 23, 2010 at 10:58 pm

    Core Cutter Procedure is given in a very tremendous way

  • Ch. Prabin Chandra November 5, 2010 at 7:15 am

    Core Cutter Procedure is given in a difficult procedure. i could not understand clearly…..so give easy way of procedure and self explanatory….

    • emeshc December 28, 2010 at 9:40 am

      Mr. Ch prabin chandra do you know how can we do a core test.
      what are the requirement?

  • emeshc December 28, 2010 at 9:38 am

    How can we determine field dry density of soil and a brief description of Core test for compacted soil.

    awaiting replay

  • emeshc December 28, 2010 at 9:41 am

    What is Hardcreete?

  • praveenkumar February 10, 2011 at 7:34 am

    What is the limiting value of field dry density of soil by core cuttr method?

  • SANJAY KUMAR March 28, 2011 at 1:01 pm

    How many number of core cutter test(field soil density) require for each 300mm layer compaction for 1000 sq. mtr. plot area

  • CHANDRAKANT CHANDRAKAR March 31, 2011 at 3:09 am

    Why need to necessary to make a number of repeat determination for a avg. Result
    we can take one core after site condition / observation and choose the suitable area if the result ontain constant , i think that should be authentic .

  • Dike henry ozioma April 19, 2011 at 5:19 pm

    What are the procedure to determine the in-situ density test using speedy moisture tester. Pls reply.

  • Vinod June 15, 2011 at 7:34 am

    It is so….. good to browse

  • s.s.hati July 8, 2011 at 11:02 am

    What is the method to check the stone dust(4.75mm to 75 mocron) compaction?can i use sand compaction method?

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