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Resilient Modulus Testing
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Research Topics




Benefits of Mr Testing


Mr Summaries


Field Modulus Measurements


For more information:


Shongtao Dai, Road Research


John Siekmeier, Road Research


Luke Johannek, Road Research



What is Resilient Modulus?

Reslient Modulus Experimental Setup

Resilient Modulus (Mr) is a fundamental material property used to characterize unbound pavement materials. It is a measure of material stiffness and provides a mean to analyze stiffness of materials under different conditions, such as moisture, density and stress level. It is also a required input parameter to mechanistic-empirical pavement design method. Mr is typically determined through laboratory tests by measuring stiffness of a cylinder specimen subject to a cyclic axle load. Mr is defined as a ratio of applied axle deviator stress and axle recoverable strain. Learn about the MnDOT Resilient Modulus Testing Protocol and Data Quality Control Criteria.


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Resilient Modulus Publications