Adhesive Shear Strength of Resilient Flooring and Carpet Adhesives ASTM D6004

Adhesive Shear Strength of Resilient Flooring and Carpet Adhesives ASTM D6004

ASTM D6004 covers shear strength testing of adhesives used to bond resilient flooring and carpets to specific substrates. Lap-jointed specimens made from adhesively bonded wood and Duck cloth are subjected to shear testing.The ASTM D6004 adhesive shear strength is expressed in pounds per square inch (psi).


    Standard method ASTM D6004 describes the test for shear strength of adhesives used to bond resilient flooring and carpets to specific substrates (e.g carpet underlayments). It provides a quantitative basis for measuring and recording shear strength of various adhesive and underlayment combinations. Shear loading is the most common cause for failure of such joints, hence the importance of measuring shear strength. In flooring applications, the applied load will vary depending on the traffic. Heavy traffic areas (such as in airports) will impose maximum flooring loads, while moderate traffic and loads may exist in office areas. Residential or hotel rooms are typical light traffic areas.


    Three wooden underlayment pieces are prepared as specified and adhesive applied by trowel as per manufacturer’s instructions. A section of each piece is kept free, as it needs to be gripped in the shearing fixture. Duck cloth (natural, untreated, #10, 14.73 oz.)  representing the carpet material stuck over the area of adhesive application on each wooden piece such that a small portion of cloth juts-out, to enable gripping by the shearing fixture. A 10 lb deadweight is placed on each specimen to ensure that bonds will form. The three adhesively bonded lap shear specimens, are then kept in a convection oven for the specified duration (upto two weeks) at 122 °F ± 2°F.  The samples are then subjected to 180° shear testing, which involves shearing the joint by pulling the underlayment and the Duck cloth in opposite directions. The testing can be done on any universal testing machine, but a special shear fixture is needed for ASTM D6004, since the shear must be uniformly applied across the area of contact. The applied force should be ≥30 psi for specimens meant for heavy traffic, ≥ 20 psi for moderate traffic and ≥ 12 psi for light traffic. The stress value at joint failure is recorded.

    Specimen size:

    Each underlayment sample will be 2 inch × 3 inch. The Duck cloth can be of the same size, but with a portion jutting-out for gripping and pulling.


    The ASTM D6004 adhesive shear strength is reported in pounds per square inch (psi).


    Core Materials Testing Services


    A variety of microscopy and spectroscopy tools available for precise measurements from the nano to the meter scale.

    Metrology Testing Services POPULAR TESTS:

    TEM SIMS Profilometry

    Materials Testing

    ASTM and ISO standard and custom chemical, mechanical, thermal, corrosion tests, etc. for all materials metals, ceramic or polymers.

    Materials Testing Services POPULAR TESTS:

    Nondestructive Testing Electrical Testing Chemistry Analysis

    Product Testing

    Thousands of tests for product quality and reliability under heat, humidity, temperature shock, vibration, drop, electrostatic discharge.

    Product Testing Services POPULAR TESTS:

    Vibration Testing Humidity Testing Accelerated Aging

    Looking for Material Testing?

    We have already delivered 10000+ Material Test results to top companies

      Send us a request

        Process for testing

          STEP 01

          You share material and testing requirements with us


          STEP 02

          We ensure your sample pick-up in an ensured manner


          STEP 03

          We deliver test report to your inbox

          Let’s work together!

          Share your testing requirements with us and we will be happy to assist you.

          ddd Just share your testing requirements and leave the rest on us!
          • Free, no-obligation consultation
          • Guaranteed confidentiality
          • Quick turnaround time
          • Hassle-free process


            Let us combine our capabilities to achieve success!!

              idea icon
              Want to connect with an expert before you leave?