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AASHTO T 370-17 Standard of Method of Test for Measuring Adhesion of Hot-Poured Crack Sealant Using Direct Adhesion Tester
standard by American Association of State and Highway Transportation Officials, 2017
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AASHTO T 370-17 is used to determine the adhesion strength of hot-poured asphalt cracksealant at the application temperature as specified in MP 25 and PP 85.The adhesion test is a test of fracture. The object of the test is to apply tensile forces to theinterface between sealant and aluminum end pieces. Sealant is confined between two halfcylindricalaluminum end pieces. The applied force and displacement can be recorded as functionsof time. Energy required to break the bond can be calculated by measuring the area under the loaddisplacementcurve. This energy can be considered a measure of bonding. In addition, themaximum force to failure can be reported as adhesion strength.