The Asphalt Institute is grateful to the Kentucky Transportation Center (KTC) for the long-term loan of a James Cox & Sons linear (California) kneading compactor.
KTC loaned this unit to the institute in 2003. This device was used at Asphalt Institute for the past 12 years to make rectangular beams for hot mix asphalt fatigue testing.
The device used a linear kneading action to compact beams to a specific height (target air voids). It also represented great mechanical craftsmanship by the late James Cox (James Cox & Sons).
AI replaced this unit with a more modern rolling wheel compactor provided by James Cox & Sons/Cooper. Thank you KTC for your help and partnership in advancing the science of asphalt.