A European standard “EN 13880-2 Hot-applied grouts - Part 2: Test method for determination of cone penetration at 25 degrees” describes a method for determining the cone penetration of hot-applied grouts using a standard penetrometer equipped with a suitable penetration cone. Initial and fuel immersion penetration values are recorded using this test method as required in the standard “prEN 14188-1 Grouts and sealants - Part 1: Requirements for hot-applied sealants”.
For the purposes of this standard, the cone penetration value expresses the depth to which a standard cone penetrates the test specimen under defined conditions of mass, time and temperature.
When performing the test, in principle, a portion of the sample is poured into two metal containers and used with a transfer cup to provide test samples that are conditioned by immersion in a water bath cooled by air and at a constant temperature. After the conditioning period, the transfer cup containing the test samples is removed from the water bath and placed on the penetration apparatus stand. The cone penetration test is immediately performed on the test samples.
The main equipment used in these tests includes:
The test samples are prepared according to prEN 13880-6. The test sample is poured, taking care to avoid any contamination. The actual temperature is recorded at the end of the pouring process. Immediately after filling, each metal container and its contents are loosely covered with a beaker of appropriate size to protect against dust and to help eliminate air bubbles. The test samples are allowed to cool in air at 23°C plus/minus 2°C (1,75 hours plus/minus 0,25 hours). The test samples are placed in the water bath with the transfer container and allowed to remain immersed for a further 1,75 hours plus/minus 0,25 hours.
The test conditions shall be as follows: temperature 25,0 degrees plus/minus 0,3 degrees, applied load 150,0 plus/minus 0,1 g, and loading time 5,0 seconds plus/minus 0,1 seconds.
When supported on the rack during the test, the test specimen is immersed in water to a depth of at least 50 mm. Distilled or deionized water should be used in the bath. After the immersion period in the water bath, the test specimens are placed from the water bath into a transfer vessel filled with water to a depth sufficient to completely cover the metal vessel. The transfer vessel containing the test specimen is removed from the water bath, placed on the stand of the penetration apparatus and tested within 1 minute.
The penetration cone, which should be at a temperature of approximately 25 degrees, is adjusted so that its tip is in contact with the surface of the test specimen. The cone is released for 5,0 seconds plus/minus 0,1 seconds, fixed and the distance penetrated is measured. Three determinations are made at points on the surface of the test specimen at least 16 mm from the sides of the metal container and from each other. Between determinations, the test specimen is returned and the tip of the cone is carefully wiped with a clean cloth and the container is transferred to the water bath. If the result of any determination differs by more than 0,5 mm from the average of the three determinations, the results are discarded and the test is repeated on a new test specimen.
Among the numerous tests, measurements, analyses and evaluation studies that our organization has carried out for businesses in various sectors, it also provides testing services defined in the standard “EN 13880-2 Hot applied joint sealants - Part 2: Test method for determining cone penetration at 25 degrees” with its trained and expert staff and advanced technological equipment.
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