 |  | | - The Bohlin Direct Tension System (BDT) is a complete instrument for evaluating stiffness and failure properties of asphalt binders at low "in-service" temperature. These low temperature - BDT properties in conjuction with Bending Beam Rheometer (BBR) data, provide a more complete characterization of the asphalt binder. In addition, BDT data predicts the tempreature at which thermal cracking would occur in the actual roadway.
- To provide the most accurate and repeatable result possible, the following key features have been incorporated into the over-all system design. The BDT employs a very stiff load frame and measuring head that rides upon preloaded precision linear bearings to reduce friction and errors associated with system ...
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