Loaded Wheel Tracker

Automated Loaded Wheel Tracker model LWT Test for rutting and stripping qualities of asphalt mixes.

Innovative design

  • Designed to test tack coat shear strength on 150mm or 100mm asphalt cores
  • Designed for use in a variety of standard compression testing machines (including the Marshall Test load frames) that will accept a maximum height of 10 inches
  • The fixture allows for 1 inch of shear travel and uses ¾ inch aluminum, fixed and free shear plates
  • Shear plates are relieved vertically and horizontally, to reduce stress concentration at loading points

How it works

  • Each shear plate has 4 guide blocks to assist with sample alignment
  • The fixture base is constructed from ¾ inch aluminum plate with base dimensions of 8-3/4 x 9 inches and an overall height of 10 inches
  • Shear plates have a ¼ inch gap between shear surfaces to accommodate average surface irregularities
  • A pre-load frame in included with calibrated spring tension for 10 and 20 PSI pre-load testing
  • Pre-load roller bearing design maintains constant pre-load pressure while minimizing pre-load friction effects from the pre-load frame
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Applications

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