A European standard “EN 13880-9 Hot-applied joint sealants - Part 9: Test method for determining compatibility with asphalt pavements” describes a method for determining the compatibility of hot-applied joint sealants applied to a sawn asphalt joint slot.
Asphalt compatibility is determined by examining the applied filler after the specified conditioning period for adhesion and cohesion failure or any oil leakage or softening between the filler and the asphalt sample.
The main equipment used in implementing this method includes:
During the preparation and conditioning of the test samples, two asphalt test blocks complying with the EN 13880-11 standard are used. A groove measuring 100 mm long, 13,0 mm plus/minus 3,2 mm wide and 19,0 mm plus/minus 3,2 mm deep is cut into the upper surface of each asphalt test block by wet cutting with an electric wall saw. The grooves thus created are brushed with a stiff-bristle brush while holding the samples under running water to remove all cutting residue. The samples are allowed to dry and return to room temperature, after which they are tightly wrapped with fabric-backed adhesive tape or otherwise reinforced to prevent collapse during the test period.
When performing the test, two test samples are prepared according to the prEN 13880-6 standard. To prevent leakage, the ends of the grooves are closed and a portion of the laboratory grout sample is poured into the grooves and slightly overfilled. The grout is not allowed to overflow onto the surface of the sample adjacent to the grooves.
After the grout has cooled to room temperature, the overflow is cleaned with a heated knife so that the surface of the grout is flush with the surface of the asphalt sample.
Asphalt samples are placed in a fan-circulated oven maintained at a temperature of 60 degrees plus/minus 3 degrees for a period of 72 hours plus/minus 1 hour. The sample is examined at least once a day to prevent settling during the test period. After the test period, the asphalt samples are removed from the fan-circulated oven and immediately examined for incompatibility of the joint compound with the sample.
Any evidence of adhesion and cohesion failure or softening or the formation of an oily exudate between the sealant and asphalt samples shall be reported in accordance with prEN 14188-1.
The test report should confirm that the test was performed in accordance with this standard and should include the following information: sample name, sample source, batch number and manufacturer's date or expiration date, where appropriate, date of test and results obtained, and name of analyst and testing laboratory.
The standard annex describes a test method for determining asphalt compatibility after thermal degradation (Annex A). The purpose of this test is to verify the compatibility of joint fillers with the asphalt sample after prolonged heating.
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 13880-9 Hot applied joint fillers - Part 9: Test method for determining compatibility with asphalt pavements” with its trained and expert staff and advanced technological equipment.
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