<p><p><strong>References:<br></strong><em>Eaton and Berg (1980)<br>Smith and Pazsint (1975)</em></p><p><strong>Method Summary</strong></p><p>The pavement rebound is measured in a Benkelman beam test. The standard axle load for the Benkelman beam test on permanent roads is 18 kips. Measurement is made by placing the tip of a beam between the dual tires and measuring the pavement surface rebound as the truck is moved away. The pavement surface rebound relates to the stiffness of the pavement and indicates the future performance of the pavement. Historically this test has been conducted for the quality assurance of the frost heave susceptible soil (Smith and Pazsint 1975, and Eaton and Berg1980). The Benkelman beam test costs less but is slow and labor intensive, and does not provide a deflection basin.</p><p><strong>Accuracy and Precision</strong></p><p>The Benkelman beam test is an accurate method for pavement performance evaluation. The thicknesses of different pavement layers and their CBR values are also measured at the same location where the Benkelman beam test is conducted. This method can assess the construction quality of pavements with partial encapsulation.</p><p><strong>Adequacy of Coverage</strong></p><p>This method takes significant time to cover a wide pavement area.</p><p><strong>Implementation Requirements </strong></p><p>A Benkelman beam and associated equipment are needed.</p><p><strong>General Comments</strong></p><p>The Benkelman beam test is a commonly used quality assurance method, which can be used for the evaluation of pavements with partial encapsulation.</p></p>